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This Annual Report on Form 10-K contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts contained in this Annual Report on Form 10-K, including statements regarding our future results of operations or financial condition, business strategy and plans, and objectives of management for future operations, are forward-looking statements. In some cases, investors can identify forward-looking statements because they contain words such as “anticipate,” “believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “hope,” “intend,” “may,” “might,” “objective,” “ongoing,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” or “would” or the negative of these words or other similar terms or expressions. These forward-looking statements include, but are not limited to, statements concerning the following:

These forward-looking statements are based on our management’s current expectations, estimates, forecasts and projections about our business and the industry in which we operate, and management’s beliefs and assumptions and are not guarantees of future performance or development. These forward-looking statements are subject to a number of risks, uncertainties and assumptions, including those described under “Summary Risk Factors,” “Risk Factors” and elsewhere in this Annual Report on Form 10-K. Moreover, we operate in a very competitive and rapidly changing environment, and new risks emerge from time to time. It is not

possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this report may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based on information available to us as of the date of this report. While we believe that information provides a reasonable basis for these statements, that information may be limited or incomplete. Our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all relevant information.

You should not rely upon forward-looking statements as predictions of future events. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that the future results, levels of activity, performance, or events and circumstances reflected in the forward-looking statements will be achieved or occur. We undertake no obligation to update publicly any forward-looking statements for any reason after the date of this Annual Report on Form 10-K to conform these statements to new information, actual results or changes in our expectations, except as required by law.

Our business is subject to a number of risks of which investors should be aware before making a decision to invest in our common stock. These risks are more fully described in the “Risk Factors” section of this Annual Report on Form 10-K, but a summary of the risks that could materially and adversely affect our business, financial condition, operating results and prospects includes the following:

Unless otherwise stated or the context otherwise indicates, references to “Oncorus,” the “Company,” “we,” “our,” “us,” or similar terms refer to Oncorus, Inc.

We are a clinical-stage biopharmaceutical company focused on developing next-generation, systemically active viral immunotherapies to transform outcomes for cancer patients. Using our two proprietary platforms, we are developing a pipeline of intratumorally and intravenously administered product candidates designed to selectively attack and kill tumor cells and deliver transgenes to stimulate multiple arms of the immune system against tumors. We believe the therapies that we are developing will bring significant benefit to many patients who are currently underserved by approved immuno-oncology therapies, including other viral immunotherapies and immune checkpoint inhibitors.

Our lead product candidate, ONCR-177, is an intratumorally, or iTu, administered viral immunotherapy based on our oncolytic HSV-1 platform, referred to as our HSV Platform, which leverages the Herpes Simplex Virus type 1, or HSV-1, a virus which has been clinically proven to effectively treat certain cancers. We are also developing a broad pipeline of product candidates that leverages our second platform, our selectively self-amplifying viral RNA, or vRNA, immunotherapy platform, referred to as our vRNA Immunotherapy Platform, which aims to enable repeat intravenous, or IV, administration of viral immunotherapies to treat cancers that are less amenable to intratumoral injection due to safety and feasibility reasons, such as cancers of the lung.

Viral immunotherapies cause immunogenic cell death by way of viral oncolysis, which has the added benefit of exposing all the tumor’s neoantigens to the immune system. These therapies can also be engineered to express multiple transgenes to further stimulate robust and durable patient-specific anti-tumor immune responses. Using our HSV Platform, we engineered ONCR-177 to overcome the limitations of existing viral immunotherapies by enhancing potency and driving strong systemic anti-tumor immune responses at injected as well as distant non-injected tumor sites, or abscopal activity. ONCR-177 is armed with five immunostimulatory transgenes—IL-12, CCL4, FLT3LG, a PD-1 antagonist nanobody and a CTLA-4 antagonist monoclonal antibody (which has the same amino acid sequence as ipilimumab)—a greater number of transgenes than viral immunotherapies that are either currently approved or in clinical development. In multiple preclinical cancer models, immune cells activated by ONCR-177 and its encoded payloads have been shown to drive both anti-tumor responses in injected tumors and abscopal activity. Product candidates from our HSV Platform, including ONCR-177, are designed to maintain full viral replication competency in tumors and are designed to be selectively attenuated in healthy tissues, meaning they replicate and express transgenes only in tumor cells while disabling potentially harmful effects on healthy tissues. In multiple preclinical cancer models, we observed that these attributes of ONCR-177 were achieved without either the systemic release of cytokines that can be associated with toxicity or significant presence of the virus in non-injected tumors or in circulation, in addition to favorable tolerability when administered via intravenous and intratumoral injection in a validated murine model of HSV-1 infection. We believe this combination of features allows our HSV Platform to overcome the safety versus potency trade-off that has generally limited the viral immunotherapy field to date. Based on safety and tolerability profile observed to date and its ability to stimulate multiple arms of the immune system to attack cancer systemically, we also believe that ONCR-177 has potential in pre-surgical, or neoadjuvant, settings.

In June 2020, we initiated our Phase 1 clinical trial of ONCR-177 in patients with several different types of solid tumors, including breast cancers and cutaneous tumors. We presented our preliminary findings from the Phase 1 clinical trial in November 2021 via a poster presentation at the 36th annual meeting of the Society for Immunotherapy of Cancer, or SITC. The presentation included data from 14 patients in the fully enrolled and completed dose escalation cohorts of the trial and five patients enrolled in the dose expansion monotherapy portion of the trial. In the fully enrolled and completed surface lesion dose escalation portion of the trial, ONCR-177 administered to heavily pretreated patients with advanced, injectable solid tumors was well tolerated with no dose-limiting toxicities. No treatment-related adverse events exceeded Grade 2, and the most common Grade 1 and 2 adverse events were fatigue, chills, nausea, and mild, dose-dependent cytokine release syndrome, or CRS. No infectious virions were detected in skin swabs, consistent with our expectations with respect to ONCR-177's safety profile. As of November 8, 2021, after four weeks of monotherapy treatment with ONCR-177 at the recommended Phase 2 dose, or RP2D, of 4x108 PFU in 4 mL (receiving two doses of ONCR-177), three of eight evaluable patients (one with cutaneous melanoma, one with squamous cell carcinoma of the head and neck, or SCCHN, and one with mucosal melanoma) had demonstrated clinical benefit. These consisted of one partial response in the patient with cutaneous melanoma as measured by calipers per Response Evaluation Criteria in Solid Tumors, or RECIST; one investigator-reported clinical response in the SCCHN patient in their injected lymph node; and one reported stable disease in the patient with mucosal melanoma as measured by RECIST 1.1 with additional improvement in cancer-related symptoms. Several findings from this trial suggest immune stimulation of the tumor microenvironment following administration of ONCR-177, including mild, dose-dependent CRS in association with increased interferon-gamma (IFNγ) and T-cell proliferation in blood, as well evidence of tumor PD-L1 expression and immune cell infiltration.

We have initiated enrollment in the surface lesion dose combination expansion portion of the clinical trial. Patients in the trial will receive ONCR-177 in combination with Merck's KEYTRUDA® (pembrolizumab), an immune checkpoint inhibitor. In addition, we are enrolling and currently dosing separate cohorts of patients with visceral tumors in the liver with the goal of showing additional safety data. We plan to report additional surface lesion monotherapy expansion data as well as initial surface lesion combination expansion data in the second half of 2022.

In addition to ONCR-177, we also have additional preclinical stage programs within our HSV Platform addressing both intratumoral and intravenous solutions to other unmet medical needs, including ONCR-GBM, our program designed to target brain cancer through intratumoral injection.

We are also pioneering viral immunotherapy programs for repeat intravenous administration through our selectively self-amplifying vRNA Immunotherapy Platform. Our IV-administered approach involves encapbsulating in a lipid nanoparticle, or LNP, the genomes of RNA viruses known to kill cancer cells, creating a selectively self-amplifying vRNA immunotherapy. We believe this approach will avoid the rapid immune clearance from circulation caused by neutralizing antibodies otherwise observed to date with IV-administered oncolytic viruses and thought to limit their effectiveness in the clinic. Once inside the tumor, the synthetic viral genome from our synthetic viruses is first amplified and then instructs tumor cells to synthesize actual infectious virions, which can cause tumor lysis before infecting nearby tumor cells while stimulating immune cell recruitment and activity.

Our two product candidates from our vRNA Immunotherapy Platform are ONCR-021 and ONCR-788. ONCR-021 encodes an optimized strain of Coxsackievirus A21, or CVA21, and ONCR-788 encodes for a modified version of the Seneca Valley Virus, or SVV. Both CVA21 and SVV have extensive clinical experience and favorable safety profiles when administered IV. We believe our selectively self-amplifying vRNA Immunotherapy Platform holds the potential for IV administration and avoids the challenge of neutralizing antibodies seen in previous approaches with IV-administered oncolytic viruses. We plan to investigate our novel vRNA immunotherapies in multiple histologies, including cancers of the lung, both as monotherapy and in combination with immune checkpoint inhibitors and other cancer treatments. We plan to submit an IND to the U.S. Food and Drug Administration, or FDA, for ONCR-021 in mid-2023 to enable clinical development for non-small cell lung cancer and other cancers such as clear cell renal cell carcinoma and melanoma, both as a single agent and in combination with immune checkpoint inhibitors. Following the IND submission for ONCR-021 and pending further resources, we plan to submit an IND for ONCR-788 to enable its development in small cell lung cancer, neuroendocrine prostate and other neuroendocrine cancers, both as a single agent and in combination with immune checkpoint inhibitors and other cancer treatments. In the process of developing our vRNA Immunotherapy Platform, we also developed a proprietary LNP platform intended to efficiently deliver large nucleic acids with minimal endosomal escape.

We plan to manufacture our product candidates at our approximately 105,000 square foot manufacturing facility in Andover, Massachusetts, 41,000 of which is specifically dedicated to processes that are compliant with good manufacturing practices, or GMP. We began process development activities at the facility in 2021 and we anticipate this facility will be operational in late 2022.

The status of our current product candidates is shown in the table below. We have retained worldwide rights to all of our product candidates.

Our company was co-founded by a team including MPM Capital executive partner Mitchell Finer, Ph.D., who has over three decades of experience in cancer immunotherapy, cell and gene therapy and regenerative medicine. Dr. Finer previously served as our chief executive officer, chief scientific officer and executive chairman and currently serves as Chairman of our board of directors. Our HSV Platform is based upon the work of renowned scientist Professor Joseph Glorioso III, Ph.D., who is chairman of our scientific advisory board. Professor Glorioso has conducted over four decades of research related to the basic biology and genetics of herpes simplex virus and is a pioneer in the design and application of HSV-1 gene vectors.

Our leadership team has extensive experience in developing and manufacturing oncology therapies, including advancing product candidates from preclinical research through clinical development and commercialization. Our President and Chief Executive Officer, Theodore (Ted) Ashburn, M.D., Ph.D., was previously Head of Oncology Development at Moderna Therapeutics, Inc. and Global Head of Leukine® (rhu GM-CSF) and Elitek®/Fasturtec® (rasburicase) within Sanofi Oncology at Sanofi S.A., and also held multiple business development roles at Genzyme Corporation. Christophe Quéva, Ph.D., our Chief Scientific Officer and Senior Vice President, Research, previously served as chief scientific officer at iTeos Therapeutics SA. Before iTeos, he held successive senior positions at AstraZeneca, plc, Amgen, Inc. and Gilead Sciences, Inc. where he led or supported multiple drug discovery programs for oncology and inflammatory diseases, from target selection to commercial approval for small molecules and biologics. John Goldberg, M.D., our Chief Medical Officer, is a pediatric oncologist who trained at the Dana Farber Cancer Institute with clinical development experience at both H3 Biomedicine Inc. and Agenus, Inc.

Traditional cancer therapy, immunotherapy and the need for new options for cancer patients

The treatment of certain cancers has improved markedly over the past decade. Whereas many cancer treatments were historically limited to surgical removal, cytotoxic chemotherapy and/or radiation, recent advances target specific genetic changes in individual tumors or redirect the patient’s immune system, particularly T cells, to eliminate tumors and improve outcomes. Unfortunately, most patients are either not eligible for or do not respond to these therapies. For example, the efficacy of immune-based approaches in patients who qualify for this type of therapy is limited to around 12 percent. While these therapies have advanced the treatment of cancer for some patients, many are still underserved and therapies with improved clinical outcomes are still desperately needed.

The goal of immuno-oncology is to harness an individual’s immune system and better enable it to identify, attack and kill tumor cells and to form long-term immunologic memory against such tumors. We believe that the best way to significantly improve outcomes for cancer patients is to stimulate not only T cells, as has been the focus of approved immune checkpoint inhibitors, but also additional key immune cells within the innate and adaptive immune systems.

The immune system is generally divided into two arms, the innate and the adaptive, which are responsible for driving immediate and lasting anti-tumor responses. The innate immune system involves a diverse set of cells, including Natural-Killer, or NK, cells, macrophages and dendritic cells, all of which generate a rapid response to any foreign body, pathogen or tumor cell. The adaptive immune system is a second line of defense that is specific to a pathogen or antigen and is triggered when the innate immune system releases signals to activate and recruit cells from the adaptive immune system. The adaptive immune system is composed of T cells and B cells that can form immunologic memory, activating upon reintroduction of the initial antigen or pathogen. Many of the recent advances in immuno-oncology, such as immune checkpoint inhibitors, have focused on improving the function of T cells, which are a key cell type within a patient’s adaptive immune system.

We see a vast opportunity for therapies that can stimulate robust anti-tumor responses by activating both the innate and adaptive immune systems that also influence both the immunosuppressive tumor microenvironment and systemic immune responses. We believe that virus-based immunotherapies offer this potential benefit by delivering potent immune stimulating agents to tumors, including not only T cells, but also NK cells and dendritic cells, and, to inhibit immune suppression within tumors, immune checkpoint inhibitors.

Our focus—unlocking the full potential of viral immunotherapies to engage multiple arms of the immune system to transform outcomes for cancer patients

We believe that viral immunotherapies are the most promising modality available today to activate multiple arms of the immune system and improve outcomes for cancer patients. Viral immunotherapy selectively infects and destroys tumor cells and leverages key cell types from the patient’s innate and adaptive immune systems, resulting in a robust and durable anti-tumor response. In the process of directly killing the tumor, tumor-specific antigens and danger signaling molecules are released. These molecules recruit and activate the innate and adaptive immune responses to identify, attack and destroy tumors and to develop long-term immunity against such tumors. Viral immunotherapies can also be engineered to express transgenes to further stimulate and prevent downregulation of the immune system. Viral immunotherapies have several properties that differentiate them from other anti-tumor therapies, which make them particularly attractive additions to today’s anti-cancer arsenal, including the ability to:

These properties have been clinically validated by viral immunotherapies that are either currently approved or in clinical development. For example, talimogene laherparepvec, or T-VEC, was approved by the FDA in 2015 for the treatment of recurrent melanoma and is marketed as Imlygic® by Amgen. T-VEC is an attenuated oncolytic virus based on HSV-1, engineered to deliver a single transgene encoding for granulocyte macrophage colony stimulating factor, or GM-CSF. In a Phase 3 clinical trial in patients with metastatic melanoma, patients treated intratumorally with T-VEC monotherapy had a 26 percent objective response rate compared to 6 percent for the control arm, which was GM-CSF. Notably, responses to T-VEC occurred in only 34 percent of non-injected non-visceral lesions and 15 percent of non-injected visceral lesions (lesions that are not cutaneous, subcutaneous or nodal), compared to 64 percent of injected lesions, suggesting that, despite encouraging validation that this early-generation oncolytic virus can generate an immune response against a non-injected tumor, increased abscopal activity is needed to improve outcomes for patients.

Our HSV Platform—developing the next generation of oncolytic HSV-1-based viral immunotherapy

HSV-1 has emerged as the leading viral vector for immunotherapy due to its potency at killing tumor cells, its large and well-studied genome, its overall safety and sensitivity to acyclovir, and the regulatory approval pathway established by T-VEC. We designed our HSV Platform to develop improved viral immunotherapies that overcome the limitations in potency and in the ability to stimulate anti-tumor immunity that have both been encountered by previous viral immunotherapies and other immuno-oncology therapies. We also intend to develop therapies derived from this platform that will address multiple types of tumors, including our ONCR-GBM program designed to target brain cancer.

Our HSV Platform improves upon three basic characteristics of viral immunotherapies:

We are developing ONCR-177 for the treatment of multiple cancers. ONCR-177 is a replication-competent oncolytic HSV-1 viral immunotherapy for intratumoral injection carrying five transgenes designed to stimulate multiple arms of the immune system in order to maximize anti-tumor immune responses and abscopal responses in non-injected tumors. In preclinical experiments, we observed durable virus and immune system driven anti-tumor activity in injected tumors as well as abscopal activity. Our Phase 1 clinical trial of ONCR-177 in patients with several different types of solid tumors, including breast cancers and cutaneous tumors is ongoing. In November 2021, we reported data from the fully enrolled and completed surface lesion dose escalation part of the Phase 1 trial suggesting that ONCR-177 was well tolerated with no dose-limiting toxicities. We completed enrollment in the dose expansion portion of the trial and continue to enroll patients in the combination cohort, with future data readouts to include both additional surface lesion monotherapy expansion data and initial surface lesion expansion data in the second half of 2022.

Each year in the United States, approximately 1.5 million patients are diagnosed with solid tumor cancers, and approximately 550,000 die from these diseases. Potentially any patient with a solid tumor can be treated by intratumoral injection, so there is a large unmet medical need for effective intratumoral therapy. Cancers potentially most addressable by intratumoral therapy include breast cancers, including triple negative and hormone receptor positive breast cancers, SCCHN, both melanoma and non-melanoma skin cancer, and injectable visceral tumors that have spread to the liver. There are several advantages of administering potential therapies by intratumoral injection, including the ability to directly target the tumor, resulting in high local concentrations of therapeutic agent as well as lower systemic exposure to the therapy, which we believe could potentially limit systemic toxicities.

We have designed ONCR-177 to achieve both oncolytic anti-tumor activity and potent immune system stimulation. We have applied our technologies to ONCR-177 to improve upon current HSV-1-based viral immunotherapies by engineering the virus to deliver directly into the tumor a greater number of transgenes than the viral immunotherapies that are either currently approved or in clinical development, as well as to retain its full replication competency while broadening tumor infectivity and preventing replication in healthy tissues.

Delivery of five immunostimulatory transgenes to stimulate systemic anti-tumor responses in both injected and non-injected tumors

Fundamental to our engineering of ONCR-177 is our proprietary deletion of the joint region in HSV-1, creating 25kb of additional payload capacity and enabling us to include a rationally and experimentally selected combination of five immunostimulatory transgenes. Our goal was to include a diverse set of transgenes that increase the overall potency of ONCR-177 in a broad range of potential tumors and, in particular, improve abscopal activity. In our selection process, we evaluated 15 potential transgenes, including GM-CSF, the transgene included in T-VEC, and prioritized transgenes for inclusion in ONCR-177 based on their ability to enhance systemic anti-tumor immune responses in cancer models. We chose transgenes with the expectation that ONCR-177 would lead to their expression within these tumors with very limited systemic exposure. This feature allowed us to consider transgenes with promising anti-tumor activity that are challenging to deliver intravenously as monotherapy or in combination with other anti-cancer therapies, due to their inherent toxicities. We prioritized combinations of transgenes that work through complimentary, but not overlapping, mechanisms to stimulate multiple arms of the immune system. Our evaluations suggest that the optimal combination of transgenes within ONCR-177 is:

The multiple mechanisms of action mediated by ONCR-177’s inherent oncolytic activity together with the immune stimulation elicited by the viral infection and the expression of these five transgenes are illustrated in the figure below.

Figure 1. Mechanisms of action of ONCR-177. ONCR-177 infected cells allow the production of five payloads as well as viral replication that induces cancer cell oncolysis. The oncolysis results in the release of all tumor antigens and also signals trigger inflammation. CCL4 and FLT3LG can induce the recruitment and differentiation of tumor antigen presenting dendritic cells and IL-12 activates the NK cells and T cells to enhance their cytolytic activity. CTLA-4 blockade promotes the priming and activation of T cells while the PD-1 antagonist prevents the exhaustion of T cells. The T cells can migrate to the other tumor sites to enable abscopal responses.

ONCR-177 was designed as a fully replication competent HSV-1-based viral immunotherapy to allow for robust viral replication in tumor cells and generate greater tumor lysis and activation of the immune system as compared to HSV-1-based viral immunotherapies that are either currently approved or in clinical development. The ability of HSV-1 to infect human cells has led others to develop HSV-1-derived viral immunotherapies with genetic changes that limit replication by inactivating the γ34.5 gene in order to protect healthy tissue. Inactivation of γ34.5 makes HSV-1 more vulnerable to the normal antiviral activity of the endogenous interferon pathway, which the body uses to fight viral infections. Consequently, current HSV-1-based viral immunotherapies containing this mutation are less able to replicate in the presence of interferon alpha, or IFN-α. Unfortunately, inactivation of γ34.5 also leads to unwanted attenuation of viral replication in cancer cells, thereby limiting the potential for these therapies to impact the survival and growth of cancer cells. ONCR-177 retains an active version of the gene that encodes for γ34.5 and, therefore, is able to replicate in the presence of IFNα, as seen in the figure below.

Figure 2. Impact of inclusion of γ34.5 in our HSV Platform product candidates. Inclusion of γ34.5 in our HSV-1 vectors allows replication in presence of IFNα compared to a γ34.5 deleted virus for which complete suppression of replication is observed in the presence of interferon. Abbreviations: PFU=plaque-forming units.

We have chosen not to sacrifice the inherent potency of HSV-1 in cancer cells and have implemented other methods to limit the ability of our HSV-1-based product candidates to replicate in healthy cells. We believe the retention of γ34.5 enables our candidates to generate robust infections in tumor cells to drive anti-tumor activity.

To enhance the ability of HSV-1 to infect a broad spectrum of tumor cells, we have introduced a set of specific mutations in the HSV-1 gB protein, which is a surface glycoprotein that mediates viral entry into cells during infection. These mutations, referred to as gB:N/T mutations, have been shown to increase the range of cells that HSV-1 can infect in addition to increasing the rate of infection. Studies published by one of our co-founders, Professor Glorioso in the Journal of Virology in 2012, showed that introduction of these mutations into otherwise identical copies of HSV-1 viruses lead to greatly enhanced infectivity of cell lines, including those lacking the normal receptors for HSV-1. We believe gB:N/T mutations enable our HSV-1-based product candidates to generate robust infections in a broad spectrum of tumor cells and increase the rate of infection.

We balanced the native viral replication competency and increased infectivity in the development of ONCR-177 with a set of specific genetic safety switches that prevent ONCR-177 from replicating in non-tumor cells and also causing latent infections in neuronal cells using two orthogonal safety strategies. First, we implemented a series of conditional genetic switches in the genetic sequence of ONCR-177 that limit the ability of ONCR-177 to replicate in non-tumor cells. These switches are controlled by the presence of RNA molecules, referred to as microRNAs or miRs, and selectively disable key viral genes responsible for HSV-1 replication and pathogenicity in healthy tissues by targeted RNA silencing via the RNA-induced silencing complex. The microRNAs we selected for ONCR-177 attenuation are differentially expressed in tumors versus healthy tissues as detailed below.

Figure 3. Principle for microRNA, or miR, dependent attenuation of ONCR-177 in healthy tissues. microRNA target sequences, or miR-T, engineered into our HSV product candidates function as conditional switches to control viral replication based on the expression of their complementary microRNAs that were selected to be absent or expressed at low level in tumors versus to normal healthy tissues.

Our attenuation strategy is based on the differential expression of this subset of microRNAs in cancer compared to healthy tissues

To identify these microRNAs, we conducted a quantitative analysis of 800 regulatory microRNAs in normal and tumor cells. As triggers for the shutdown of ONCR-177 in healthy cells, we chose a set of ten microRNAs from this analysis that are highly expressed in tissues such as those of the nervous system, skeletal and cardiac muscle, and organs such as the liver and pancreas and not expressed in the tumors we intend to treat with ONCR-177.

Figure 4. The heatmap above shows the differential expression of the microRNAs selected for ONCR-177 attenuation in cancer compared to healthy tissues. Abbreviations: Mal.=malignant.

We introduced microRNA target sequences into four critical HSV-1 genes such that the presence of the corresponding microRNAs in healthy tissues would prevent viral replication and disease development. These genes include infected-cell polypeptide 4, or ICP4, and infected-cell polypeptide 27, or ICP27, both of which are transcriptional regulatory proteins essential for viral growth; UL8, a component of the viral replication complex, which we identified as an essential gene for viral replication; and γ34.5, which is required for inhibition of host cells’ antiviral response. This microRNA attenuation strategy for ONCR-177 is reflected in the figure below.

Figure 5. Overview of ONCR-177 microRNA attenuation strategy. Four cassettes, each containing three microRNA target sequences (miR-T), are inserted in the non-coding region of the HSV-1 gene to control its replication.

Attenuation of multiple viral genes by microRNAs found in normal cells prevent viral replication in these tissues

We have shown that the microRNA responsive sequences that we introduced into these key HSV-1 genes lead to the suppression of ONCR-177 replication in cells expressing any of the corresponding microRNAs. Only when all ten microRNAs are absent, a condition which we have found to only occur in tumor cells, can ONCR-177 replication proceed unimpeded.

We also introduced a set of mutations in the gene coding for UL37 that are intended to prevent HSV-1 transport in neurons and to inhibit replication and latency in this cell type. In published in vitro and animal model preclinical studies, HSV-1 containing these mutations was unable to infect the nervous system. In addition, although dosing of unmodified HSV-1 in mice causes neuronal toxicity and hind limb paralysis, as described below, we have demonstrated that our attenuated viruses are well tolerated with no signs of neuronal toxicity.

We are focused on developing a manufacturing process for ONCR-177 that is designed to optimize production of clinical-grade material at scale. We have developed a closed, serum-free process with the potential to lead to a high yield and overall low cost of goods. While we currently leverage a commercial CMO for production of our initial batches of clinical material, our process development activities at our approximately 105,000 square foot manufacturing facility in Andover, Massachusetts (41,000 of which is specifically dedicated to processes that are compliant with GMP) are ongoing in an effort to support ONCR-177 and our advancing pipeline of product candidates.

We intend to develop ONCR-177 for patients who have injectable tumors, including patients with tumors that are not typically responsive to immunotherapy, and patients with tumors that do typically respond to immunotherapy but for whom the clinical benefit rate remains low, such as SCCHN and triple-negative breast cancer, or TNBC. We dosed our first patient in the Phase 1 clinical trial of ONCR-177 in June 2021 and released preliminary safety and tolerability data in November 2021. Our clinical development plan for ONCR-177 in metastatic tumors includes our ongoing monotherapy evaluation of safety and activity, as well as combination studies to evaluate any additional benefits from PD-1 inhibitors, in addition to evaluation in neoadjuvant settings. These strategies are supported by the preclinical data described below.

mONCR-177 activity in multiple tumor models regardless of sensitivity to immune checkpoint inhibitors or immunotherapy

We assessed anti-tumor activity of mONCR-177 across five syngeneic mouse tumor models representing a diverse range of permissivity to HSV-1 and baseline T cell tumor infiltration. In addition to mONCR-177, many of these studies included ONCR-159, the base vector for ONCR-177 that lacks payloads, as a comparator. In these preclinical experiments, mONCR-177 exhibited greater activity in both the injected tumor and non-injected tumors compared to the same dose of ONCR-159, suggesting that mONCR-177 activity is related, at least in part, to its immunostimulatory payloads.

We tested the following models, which are listed in order of decreasing response to existing immunotherapy approaches, such as PD-1 and CTLA-4 antagonists:

As illustrated in the four figures below, MC38, A20, CT26 and B16F10N1 subcutaneous tumors responded to mONCR-177, demonstrating decreased tumor growth and significant regression. In these bilateral flank tumor models, one tumor is typically injected with a viral immunotherapy or placebo, while the tumor on the opposite flank is not injected. In these models, significant tumor growth inhibition and regressions were observed in injected tumors as well as non-injected tumors demonstrating that mONCR-177 has strong abscopal activity. The low levels of abscopal activity in ONCR-159 treated tumors indicate that the abscopal activity of mONCR-177 is dependent on its immunostimulatory payloads. In the 4T1 model of breast cancer, mONCR-177 injection in the subcutaneous tumor led to a significant inhibition of lung metastasis. We believe that the ability to suppress the development of non-injected rapidly growing tumors or metastatic disease is a critical attribute of mONCR-177 indicating the potential to produce systemic anti-tumor immunity. If this activity is also seen in patients, we believe it could provide two noteworthy benefits: not only could it allow patients with known metastatic disease to be treated without requiring metastases to be specifically identified and injected, but it may also lead to the suppression of metastases that are still too small to detect in patients with earlier-stage cancers.

Figures 6-9. Activity of mONCR-177 in the A20, MC38, CT26 and B16F10N1 models. Error bars indicate group mean +/- standard error of the mean of tumor volumes for both the right and left flank tumors after intratumoral administration of phosphate-buffered saline, or PBS, control or mONCR-177 into the right flank tumor or the injected tumor. Dosing was repeated every third day for a total number of three doses. Tumors were measured bi-weekly (n=10 in A20, MC38 and B16F10N1 and n=12 in CT26).

We believe these data support the broad development of ONCR-177 as monotherapy in patients with metastatic solid tumors.

Through a series of experiments in mice, we observed that most of the anti-tumor effect generated by mONCR-177 is due to its ability to stimulate the immune system. We also observed a contribution to the shrinkage of tumors from mONCR-177’s oncolytic viral activity in injected tumors. These experiments demonstrated increased tumor cell infiltration involving T, NK and dendritic cells and that anti-tumor activity was dependent on T cell and NK cell activity.

We conducted in vivo pharmacology studies in immune competent mice to investigate immune-mediated mechanisms of action of mONCR-177. These studies included histologic (immunohistochemistry), molecular (transcriptional profiling), or cellular (flow cytometry) profiling of injected and non-injected tumors.

As shown in the figure below, significant CD3 T cell infiltration was observed in the oHSV-sensitive A20 tumor model in the injected and non-injected tumors after mONCR-177 treatment compared to PBS control.

Figure 10. T cell infiltration are recruited in injected and non-injected tumors after mONCR-177 intratumoral administration (n=5 per group).

These histology data suggest that mONCR-177 can promote a robust T cell influx into both the injected and non-injected tumors. Additional analysis of transcriptional profile and flow cytometry expanded on this data by showing the recruitment and activation of T cells, NK cells, and classical dendritic cells and the development by transcriptional analysis of a gene signature associated with cytolytic T cells, interferon response and antigen presentation.

Therapeutic efficacy of other viral immunotherapies, including oHSVs, has been shown to be critically dependent upon CD8 T cell and NK cell immune responses. As shown in the figure below, we conducted immune subset depletion studies that demonstrated the dependency of the anti-tumor activity of mONCR-177 in the A20 tumor model on the presence of CD8 T cells and NK cells. When CD8 cells were depleted from mONCR-177-treated animals, the survival benefit in mONCR-177 mice was lost and the outcome of the treated mice became indistinguishable of those of placebo-treated controls. This suggests that mONCR-177-induced CD8 cytotoxic T and NK cells drive most of the anti-tumor activity. The ability of mONCR-177 to lead to stimulation of both the NK cells from the innate immune system and the CD8 T cells from the adaptive immune system is a strong driver for its potential across multiple tumor models.

Figure 11. mONCR-177 survival benefit was shown to be dependent on both CD8 T cells and NK cells in the A20 bilateral flank tumor model (n=10 per group).

mONCR-177 treatment leads to the development of immunologic memory and to the development of protective anti-tumor activity as shown in rechallenge studies

Immunologic memory is a central tenet of the adaptive immune response, which is the ability to swiftly, potently, and specifically mount a response against a previously encountered antigen. The memory response is primarily mediated by CD8 and CD4 T cells, a small subset of which differentiate to a long-lived memory cell phenotype after resolution of the initial immune response to particular tumor antigen(s). These memory T cells patrol the body and quickly differentiate to effector cells upon re-encounter with cognate antigen, to mediate efficient eradication of the tumor. Preclinical reports have shown that successful viral immunotherapy can provide long-term protection from tumor rechallenge.

We assessed the ability of mONCR-177 therapy to elicit a long-term protective anti-tumor immunologic memory response in the A20 tumor model. Mice bearing established single flank subcutaneous A20 tumors were dosed intratumorally with either placebo control or mONCR-177. Of the 40 mice treated with mONCR-177, 37 achieved complete tumor regressions followed by significantly prolonged survival compared to placebo control-treated mice (p<0.0001), as shown in the figure below. Subsequently, mice cured of either single or dual flank tumors were observed for three to five months for signs of tumor recurrence and resolution of the primary anti-tumor immune responses, and then rechallenged with A20 tumor cells. Upon challenge in naïve age-matched mice, A20 tumors cells formed rapidly growing tumors whereas mice that had prior complete tumor regressions uniformly rejected A20 cells and survived tumor-free until the end of the monitoring period as shown below.

Figure 12. mONCR-177 treatment shown to elicit specific and durable protective immunologic memory in mice bearing A20 with tumors previously completely regressed by mONCR-177 administration (mouse model on left, n=40, mONCR-177 treated group, n=10, PBS group; mouse model on right, n=10 per group).

We observed similar results in mice bearing CT26 tumors that received intratumoral injection of mONCR-177 and that were then subject to similar rechallenge studies involving the CT26 tumor model, as shown below.

Figure 13. Treatment with mONCR-177 is shown to lead to long-term survival in the CT26 bilateral mouse model (left) (n=12 per group) and to development of protective immunity as demonstrated by tumor rejection and survival in mice that completely regressed CT26 tumors and were rechallenged by the same tumor (right) (n=5 per group).

We believe these results demonstrate that intratumoral mONCR-177 monotherapy can elicit anti-tumor activity that is accompanied by the development of a specific and durable protective immunologic memory response. Based on these data, we plan to develop ONCR-177 as monotherapy in settings where immune checkpoint inhibitors have little impact.

mONCR-177 activity with systemic anti-PD-1 blocking supports combination therapy with immune checkpoint inhibitors Intratumoral therapy of mONCR-177 enhanced the ability of systemic anti-PD-1 therapy to promote inhibition of tumor growth in the MC38 tumor

model. The inflammatory microenvironment set up by mONCR-177, a replicating oHSV expressing IL-12, FLT3LG, and CCL4, is anticipated to result in compensatory upregulation of immune checkpoints such as PD-L1 and CTLA-4. IFN-γ -mediated upregulation of PD-L1 provides a potential mechanism for immune evasion by the tumor that can in turn be circumvented by blockade of the PD-1 pathway, which in the case of ONCR-177 is mediated in the injected tumor via the anti-PD-1 nanobody and in non-injected tumors via systemically administered anti-PD-1 antibody.

As shown in the figure below, systemic anti-PD-1 therapy in the MC38 tumor model resulted in response rates for both the right and left flank tumors, significantly (p<0.0001) different from its isotype control, or lgG2a, confirming the sensitivity of the model to anti-PD-1 immune checkpoint therapy. In addition, when administered in combination, mONCR-177 and anti-PD-1 therapy resulted in a significantly enhanced response rate on the non-injected tumor compared to either mONCR-177 (p=0.002) or anti- PD-1 (p=0.003) monotherapy. For the injected tumor, most of the activity was due to mONCR-177 treatment with a trend (p=0.09) of slightly greater activity with combination treatment.

Figure 14. Activity of mONCR-177 and anti-PD-1 combination therapy in the MC38 tumor model. CR=complete response (n=10 per group). ns: non-significant; *p<0.05; *** p<0.0001, 2-way ANOVA on Day 18.

These results suggest that whereas mONCR-177 single agent treatment was sufficient to drive most of the observed activity in the injected tumor, the addition of systemic anti-PD-1 therapy augmented activity in tumors that are sensitive to anti-PD-1 therapy. These data support our plans to develop ONCR-177 in combination with immune checkpoint inhibitors in patients with tumors that are sensitive to immune checkpoint inhibitor therapy.

mONCR-177 activity in suppressing micro-metastases in the 4T1 model of metastatic breast cancer supports the potential for neoadjuvant breast cancer treatment

We assessed the potential for ONCR-177 to treat micro-metastases in 4T1 based breast carcinoma cancer cell line that when orthotopically implanted spontaneously metastasizes to internal organs, most notably to the lungs. 4T1 is representative of an immunosuppressed tumor microenvironment and is resistant to many types of immunotherapies, including immune checkpoint inhibitors and viral immunotherapies, including oHSV-1. As shown in the figure below, treatment with mONCR-177 resulted in a lower number of lung tumor nodules as compared to control PBS or the unarmed ONCR-159.

These results suggest that ONCR-177 may be promising in the setting of neoadjuvant therapy for triple negative breast cancer and perhaps other histologies as well.

Intratumoral administration of viral immunotherapies allows large amounts of active agent within the target tumor tissue, while limiting systemic exposure and potential toxicity. This dosing strategy allows efficient viral replication, oncolysis and payload expression within the tumor tissue, thereby increasing the chance to nucleate a potent local and systemic anti-tumor immune response. However, anti-tumor activity after intratumoral administration may potentially be limited by the anti-viral antibody response. Pre-existing exposure to HSV-1 has potential clinical implications since the majority of the world population has been exposed to HSV-1 and presumably has circulating neutralizing antibodies. Clinical data attained with T-VEC suggests that efficacy from intratumoral administration of viral immunotherapies may be unaffected by the anti-viral humoral response.

To examine this issue as it relates to our ONCR-177 program, we evaluated the effects of pre-exposure to HSV-1 and the presence of circulating anti-HSV-1 antibodies on the activity of mONCR-177. As illustrated in the figure below, anti-tumor activity was shown to be similar for mONCR-177 treated naïve and immunized groups.

Figure 16. Pre-existing immunity to HSV-1 is shown not to change the anti-tumor activity of mONCR-177 (n=10 per group). CR=Complete response.

Together, these results show that pre-existing immunity to HSV-1 has no apparent effect on either the in situ or abscopal anti-tumor activity of mONCR-177 and further supports the development of ONCR-177 in patients with solid tumors across multiple histologies.

On November 12, 2021, we delivered a poster presentation at SITC’s 36th Annual Meeting, which included preliminary findings from Part 1 of our Phase 1 clinical trial of ONCR-177, including data from 14 patients in the fully enrolled and completed dose escalation cohorts and five patients enrolled in the dose expansion monotherapy portion of the trial, as of November 1, 2021, the cut-off date for the SITC poster submission, in addition to incremental patient data as of November 8, 2021 that was presented live at SITC.

In the fully enrolled and completed surface lesion dose escalation portion of the Phase 1 clinical trial, ONCR-177 administered to heavily pretreated patients with advanced, injectable solid tumors was well tolerated with no dose-limiting toxicities. No treatment-related adverse events exceeded Grade 2, and the most common Grade 1 and 2 adverse events were fatigue, chills, nausea, and mild, dose-dependent cytokine release syndrome, or CRS. No infectious virions were detected in skin swabs, consistent with our expectations with respect to ONCR-177’s safety profile. As summary of treatment-related adverse events experienced by this patient population at the RP2D is shown in the table below.

As of November 1, 2021, seven heavily pretreated patients had been enrolled in the ongoing surface lesion, histology-specific monotherapy expansion cohorts of the trial. As of such date, four of these patients were evaluable, one patient went off study after a single dose and is not evaluable, and two were too early in their treatment course to be evaluable.

The four evaluable monotherapy expansion patients referred to above are in addition to four evaluable monotherapy escalation patients treated at the RP2D. As of November 8, 2021, after four weeks of monotherapy treatment with ONCR-177 at the RP2D, 4x108 PFU in 4 mL (two doses), three of eight evaluable patients (one with cutaneous melanoma, one with SCCHN, and one with mucosal melanoma) demonstrated clinical benefit as follows:

As summary of the data observed for these eight evaluable patients dosed at the RP2D as of November 1, 2021 is shown in the plot below.

CR = complete response; PR = partial response; SD = stable disease; PD = progressive disease

Several findings from the study thus far suggest immune stimulation of the tumor microenvironment, including mild, dose-dependent CRS in association with increased interferon-g (IFN-g) and T-cell proliferation in blood, as well evidence of tumor PD-L1 expression and immune cell infiltration.

In June 2020, we began enrolling patients in an ongoing Phase 1 dose escalation basket trial of ONCR-177. In November 2021, we presented preliminary findings from Part 1 of the trial, including data from 14 patients enrolled in the completed dose escalation cohorts and five patients enrolled in the dose expansion monotherapy cohorts as of the relevant data cut-off date.

Our Phase 1 clinical trial of ONCR-177 is designed to evaluate the safety, tolerability and initial efficacy of ONCR-177 administered alone and in combination with Merck’s KEYTRUDA in patients with advanced and/or refractory cutaneous, subcutaneous or metastatic nodal solid tumors or with liver metastases of solid tumors. The primary endpoints in the trial are safety and tolerability both as monotherapy and in combination with KEYTRUDA. Secondary endpoints include anti-tumor responses and markers of immune activation. The trial is composed of two primary parts:

The near-term objectives of Part A of the trial are to establish ONCR-177's safety and tolerability and RP2D, as well as to demonstrate monotherapy activity indicative of ONCR-177's anticipated efficacy profile. In addition, we are enrolling and currently dosing separate cohorts of patients with visceral tumors in the liver with the goal of showing additional safety data. We dosed the first patients in the combination arm of the trial (Part B) in late 2021, with the goal of identifying tumor types that are suitable for dosing in randomized registration-directed trials in combination with KEYTRUDA. We plan to report additional surface lesion monotherapy expansion data from Part A and initial surface lesion combination expansion data from Part B in the second half of 2022.

Our Phase 1 trial and early clinical development plan is summarized in the figure below.

Figure 17. Clinical development plan for ONCR-177 in advanced solid tumors. Our dose escalation included four dose levels starting at 1x106 PFU/dose in 1 mL, escalating in log increments up to 1x108 PFU/dose in 1 mL, with the final dose level at 4x108 PFU/dose in 4 mL, which was determined to be the RP2D. We intend to treat tumors with a concentration of 1x108 PFU/mL, up to 4 mL, with volume dependent on tumor size, similar to how talimogene laherparepvec is used today. *Basket study including breast cancer, squamous cell carcinoma of the head and neck (SCCHN) and melanoma.

Key safety and exploratory biomarkers our Phase 1 trial include ONCR-177 detection in skin swabs, anti-HSV-1 antibodies, ONCR-177 payloads in blood, peripheral inflammatory cytokines, immune infiltration of the tumor and PD-L1 immunohistochemistry, or IHC, expression.

We are also investigating potential clinical trials to assess the ability of ONCR-177 to demonstrate therapeutic benefit in neoadjuvant settings. We believe that the potential ability to induce immune responses without the consequences of systemic toxicities may represent an important mechanism to control tumor growth, prevent the spread of tumors, improve the ability to surgically remove tumors and perhaps reduce the need for surgery. For example, women who present with localized breast cancer suitable for resection, particularly women with TNBC, may be suitable candidates for ONCR-177 therapy. A clinical trial in this treatment setting reported recently by researchers at the Moffit Cancer Center demonstrated complete pathologic responses in five out of nine non-metastatic TNBC patients treated with T-VEC (NCT02779855). We plan to initiate a separate trial or cohort in our Phase 1 trial with ONCR-177 in such neoadjuvant settings, pending the results of our dose expansion trial in patients with advanced tumors, including those with TNBC.

Data from the combination arm of our Phase 1 clinical trial (Part B) will inform the indications that we plan to target for registration-directed trials, which are likely to take the form of randomized Phase 2/3 trials designed to demonstrate clinical benefit in high unmet need disease settings, including second and third-line melanoma, third-line TNBC and second and third-line SCCHN.

We believe that ONCR-177 has the potential to have anti-tumor activity in the broad spectrum of superficial, subcutaneous, and visceral tumors that can be treated by intratumoral injection. Our clinical development plan is focused on two strategies to address unmet medical needs: treatment of refractory patients with advanced diseases that have some but incomplete benefit from existing immunotherapies, beginning with cancers including TNBC and SCCHN, and treatment of tumors typically resistant to immunotherapy, using ONCR-177 to overcome lack of response. We will first focus development on later stage patients with fewer treatment options. Assuming we are able to demonstrate clinical proof of concept, we will then seek to address the problems of early-stage patients in, for instance, newly diagnosed, non-metastatic TNBC and neoadjuvant settings.

We believe that, because ONCR-177 combines six immunotherapy approaches in one viral immunotherapy while retaining full replication competency and an anticipated favorable safety profile, we should be able to generate robust clinical data, such as durable response rate and survival data. In addition, we believe that if ONCR-177 is approved, its commercial acceptance could benefit from the pioneering efforts of previous oncolytic viruses in that many centers now have experience administering infectious therapeutic agents directly into tumors. We also believe that the commercial acceptance of ONCR-177 could be enhanced by a clinical development plan that will focus on cancers that are unmet medical needs and have been difficult to treat such as SCCHN and TNBC, not primarily on melanoma. We believe that our data also suggest a role for ONCR-177 as both monotherapy and as part of combination therapy.

SCCHN is the sixth most common form of cancer representing a broad category of cancers including tumors of the oral cavity, oropharynx, larynx, and hypopharynx that have been grouped anatomically. Each year, SCCHN is diagnosed in more than 900,000 people worldwide, with over 65,000 new cases and more than 14,600 deaths occurring in the United States alone. Five-year survival

for newly diagnosed patients is 65 percent, however, approximately 20 percent patients present with metastatic disease where less than 40 percent of patients survive five years.

Currently available treatments for SCCHN involve combinations of chemotherapy, radiation and surgery. These treatments are associated with acute and long-term effects including swallowing dysfunction, dry mouth, and dental problems. Although immunotherapy is active in SCCHN, most patients who are treated with immune checkpoint inhibitors will eventually progress and will need additional treatment options. Both nivolumab and pembrolizumab were approved for patients with SCCHN that has progressed on prior platinum therapy in 2016, based on improved ORR. Pembrolizumab was recently approved in 2019 as the first-line treatment of patients with metastatic or unresectable, recurrent SCCHN. Pembrolizumab in combination with platinum and 5-FU is indicated for all SCCHN patients, whereas pembrolizumab as a single agent is indicated for SCCHN patients whose tumors express PD-L1 combined positive score, or CPS, of greater than or equal to 1. This first line approval is based on results from the Phase 3 KEYNOTE-048 trial, where pembrolizumab monotherapy demonstrated a significant improvement in overall survival, or OS, compared with the EXTREME regimen (cetuximab with carboplatin or cisplatin plus FU), a standard treatment, as monotherapy in patients whose tumors expressed PD-L1 (CPS of greater than or equal to 1) and in combination with chemotherapy in the total study population. Given that the progression free survival, or PFS, for all patients treated in this study was approximately five months, there is still clearly a substantial unmet medical need to bolster immunotherapy after progression from front line therapy in recurrent, unresectable or metastatic non-nasopharyngeal SCCHN. While T-VEC has also been studied in SCCHN, including in combination with pembrolizumab and safety has been manageable, to date activity has been modest compared to pembrolizumab monotherapy. The ONCR-177 trial will provide the opportunity to study a viral immunotherapy in patients eligible for second line therapies for whom pembrolizumab is no longer working, both as monotherapy and in combination with an immune checkpoint inhibitor such as pembrolizumab.

Breast cancer is the second leading cause of cancer death in women in the United States and worldwide. Approximately 281,550 women in the United States are diagnosed with breast cancer and approximately 43,600 die from this disease each year. Approximately 31,000 of these women will develop triple-negative breast cancer, and of these approximately 9,000 will progress to stage 3 TNBC. There is significant unmet need, especially in aggressive and relapsed forms of the disease. For example, TNBC tends to grow, spread and recur faster than most other types. Women with TNBC are also more likely to develop metastasis, and these women typically have a poorer prognosis than women with other types of breast cancer due to the lack of available therapies. Meeting the unmet medical needs in TNBC will require both more effective treatment in the non-metastatic setting, and more effective treatment for patients who already have metastases at diagnosis. Immunotherapy is showing promise in both settings, although there remains need for improvement. Additionally, while survival rates are better for hormone receptor positive disease, the subtype which the majority of patients with breast cancer have, for those who recur after standard treatments, new options to improve the immune response are also needed as such patients comprise the majority of poor outcomes in breast cancer.

In March 2019, the FDA granted accelerated approval to the first immunotherapy regimen in breast cancer, a combination of nab-paclitaxel and atezolizumab, an anti-PD-L1 immunotherapy, for the treatment of patients with unresectable locally advanced or metastatic PD- L1-positive TNBC. The addition of atezolizumab to nab-paclitaxel was shown by Schmid and colleagues to have increased the PFS from 5.5 to 7.2 months for patients whose tumors were PD-L1 positive, although there was no improvement in PFS for patients whose tumors were PD-L1 negative. Similarly, pembrolizumab combined with chemotherapy was associated with an improvement in PFS of 9.7 months versus 5.6 for chemotherapy alone in patients whose tumors expressed high PD-L1. Pembrolizumab was granted accelerated approval by FDA in November 2020, in combination with chemotherapy for the treatment of patients with PD-L1 positive TNBC. The accelerated approval for pembrolizumab in mTNBC was changed to full approval in July of 2021, and pembrolizumab was granted full approval for the neoadjuvant treatment of TNBC. While the accelerated approval of atezolizumab for mTNBC has been retracted due to lack of a confirmatory trial, pembrolizumab remains as standard of care for early TNBC (i.e., neoadjuvant) and for mTNBC. We believe that the immunostimulatory activity associated with ONCR-177 has the potential to further enhance this benefit, and may extend the benefit of immunotherapy to PD-L1 negative patients, who are the majority of metastatic TNBC patients, by virtue of increasing inflammation in the tumor microenvironment and upregulating PD-L1.

Up to 95 percent of cases present at an early-stage, and such patients are typically treated with surgery to remove the tumor(s) and possibly some of the lymph nodes. About 25 percent receive a course of chemotherapy prior to surgery in order to shrink a tumor and make it more amenable to resection. This pre-surgical treatment is known as neoadjuvant therapy. Pre-treating patients in the neoadjuvant setting who have early, localized but high risk breast cancer, such as TNBC, with chemotherapy makes tumors smaller, decreases the invasiveness of the surgical resection, and improves long-term outcomes. Neoadjuvant treatment has been established in downstaging large or locally advanced tumors allowing breast-conserving surgery, thereby avoiding mastectomy and has also been shown to improve survival outcomes.

We are applying our HSV Platform technology towards the development of a portfolio of other viral immunotherapy product candidates, leveraging the knowledge and experience gained through the development of ONCR-177 and our other programs.

A second program utilizing our HSV platform will specifically target brain cancer, including glioblastoma multiforme, or GBM, the most frequent and aggressive form of brain cancer. We intend to leverage our knowledge of microRNA expression to engineer a microRNA attenuation strategy designed to protect healthy brain tissue and select a combination of payloads that address the specific drivers of immune suppression in brain cancer. We have initiated studies to select payloads and micro-RNA targets specific for brain cancer and anticipate candidate nomination in the second half of 2021.

GBM, with its typically poor prognosis, represents a particularly acute unmet medical need. In the United States, it is estimated that there are approximately 18,000 newly diagnosed patients each year and 13,000 deaths annually. Newly diagnosed high-grade patients have a median overall survival of 15 to 17 months; the 5-year-overall survival rate is only 5.6%. For patients in which disease recurred the prognosis is much worse, with a median overall survival of 6 to 8 months, while in patients who failed treatment with temozolomide and bevacizumab, or equivalent salvage chemotherapy, overall survival is reported being as short as 3 to 4 months. The current FDA-approved therapies bevacizumab, carmustine wafer, NovoTTF-100A, and lomustine are only marginally effective in extending overall survival in patients with recurrent GBM. The initial results from other companies’ clinical trials with immune checkpoint inhibitors such as anti-PD-1 antibodies have been disappointing in patients with recurrent high-grade gliomas.

Our selectively self-amplifying vRNA Immunotherapy Platform—enabling the repeat intravenous administration of viral immunotherapies

The intravenous administration of viral immunotherapies is an attractive approach for improving the standard of care for many oncology patients because it allows for all tumors in a patient to be treated directly, including micro-metastases that are sometimes difficult to detect and treat. In addition, it allows for potential treatment of certain tumors, such as those of the lung, that are less amenable to repeat intratumoral injection of anti-cancer therapies for safety and feasibility reasons. While multiple viruses have been administered intravenously to treat tumors, they have all been challenged by limited efficacy, likely due to the rapid development of neutralizing antibodies. If neutralizing antibodies could be avoided by virtue of a LNP, which is less immunogenic, this would, in turn, allow the administered therapy to reach tumors and enable repeat intravenous administration of viral immunotherapies.

Our selectively self-amplifying vRNA Immunotherapy Platform is focused on designing and developing viral immunotherapy candidates that can infect tumors while avoiding neutralizing antibodies thereby allowing for repeat intravenous administration. To overcome the limitations caused by neutralizing antibodies, we have developed a novel delivery strategy, in which we engineer a selectively self-amplifying vRNA immunotherapy comprised of a synthetic viral genome encapsulated within an LNP that is intended to be less immunogenic than a natural viral capsid.

Figure 18. Diagram comparing a native RNA virus to our selectively self-amplifying vRNA encapsulated in an LNP. vRNA selectively self amplifies in immunosuppressed environments (tumors), producing oncolytic virions that further self amplify.

Once inside the tumor cells, and as is the case with other viral immunotherapies, these genomes replicate and generate a burst of infectious virions that then spread locally and lyse adjacent tumor cells, as illustrated in the figure below.

Figure 19. Schematic representation of the mode of action of our synthetic viruses.

Current programs from our vRNA Immunotherapy Platform are based on coxsackievirus A21, or CVA21, and Seneca Valley Virus, or SVV, which have both demonstrated acceptable safety and tolerability in early clinical trials conducted by others when virions have been administered intravenously, but where the efficacy was likely limited by the subsequent development of neutralizing antibodies.

We have demonstrated proof of concept of this approach in preclinical models showing that synthetic viral immunotherapies based on both CVA21 and SVV, when administered intravenously, are able to successfully deliver a synthetic viral genome to tumors leading to production of replication competent viruses within the tumors and to tumor growth inhibition. Product candidates to be developed from our selectively self-amplifying vRNA Immunotherapy Platform will utilize shared formulation, regulatory and manufacturing strategies, allowing us to be more efficient in the development of subsequent product candidates.

In May 2021, we announced the nomination of our first product candidates from our vRNA Immunotherapy Platform, ONCR-021 and ONCR-788. We selected viral genomes for development for our vRNA Immunotherapy Platform based upon two factors, clinical experience with these viruses and technical feasibility:

We are developing ONCR-021, a vRNA immunotherapy product candidate for repeat intravenous administration based on CVA21. We selected CVA21 for our first vRNA immunotherapy program based on a number of attractive properties such as clinical safety and tolerability after intravenous dosing in patients, ability to replicate in solid tumors, and its inability to insert into the host chromosome, eliminating the potential of insertional mutagenesis. CVA21 is a picornavirus that has broad tumor tropism, in particular for non-small cell lung cancer, or NSCLC, melanoma, kidney and other solid tumors. We intend to develop ONCR-021 for these indications. In preclinical studies conducted by us and others, treatment with CVA21 resulted in significant tumor growth inhibition in mouse tumor models including SK-MEL-28 melanoma cells.

We plan to submit an IND for ONCR-021 in mid-2023 to enable clinical development for NSCLC and other cancers such clear cell renal cell carcinoma and melanoma, both as a single agent and in combination with immune checkpoint inhibitors.

Coxsackievirus A21 is a naturally occurring RNA virus that normally causes mild upper respiratory tract infections in humans. Most studies on coxsackievirus focus on the CVA21 kuykendall strain which is currently in clinical development for NSCLC by Merck as CAVATAK.

In early clinical trials, CAVATAK was well-tolerated when dosed either intratumorally or intravenously and associated with both local and distant tumor responses. In a Phase 2 trial, intratumoral injections of CAVATAK in patients with late-stage melanoma showed durable objective responses in 19.3 percent of patients. Tumor biopsies of treated patients demonstrated the presence of virions and increased infiltration of immune cells in tumors. Clinical trials of intravenously administered CAVATAK also found that neutralizing antibodies developed against the virus after approximately seven days resulting in a limited window in which repeat intravenous doses could potentially be effectively delivered.

We selected a CVA21 viral strain, referred to as ONCR-CVA21 prior to candidate nomination, that demonstrates more potent oncolytic activity in cancer cell lines including in cells derived from NSCLC than the Kuykendall strain developed by Merck as CAVATAK. In preclinical studies, intravenous dosing of ONCR-021 resulted in tumor shrinkage in two xenograft models of NSCLC, including in the NCI-H1299 as shown in the figure below, which provides preclinical validation for our ONCR-021 program.

Figure 20. ONCR-021 demonstrated anti-tumor activity in an NCI-H1299 NSCLC tumor model when dosed intravenously twice every 7 days. ONCR-021 is more active than Synthetic CVA21 based on the Kuykendall (CAVATAK) strain (n=8 per group; p<0.0001 for Synthetic ONCR CVA21 versus PBS control or Synthetic Kuykendall CVA21).

Further preclinical studies of ONCR-021 demonstrated that ONCR-021 was well tolerated in hulCAM-1 transgenic mouse models and in non-human primates with no adverse pathology after single or repeat administration, including no effects on body weight, no adverse elevation of liver enzymes and no pathological findings at exposures above those required for antitumor activity. In addition, ONCR-021 exhibited minimal replication in normal tissues.

We plan to submit an IND with the FDA for ONCR-021 in mid-2023 to enable clinical development for non-small cell lung cancer and other cancers such as clear cell renal cell carcinoma and melanoma, both as a single agent and in combination with immune checkpoint inhibitors.

In addition to ONCR-021, we are developing ONCR-788 based on Seneca Valley Virus, or SVV, derived from our selectively self-amplifying vRNA Immunotherapy Platform. In this synthetic viral program, we encapsulate the SVV genome into LNPs and are investigating both an unarmed synthetic virus as well as a synthetic virus armed with immunostimulatory transgenes. Following the IND submission for ONCR-021 and pending further resources, we plan to submit an IND for ONCR-788 to enable its development in small cell lung cancer, or SCLC, neuroendocrine prostate and other neuroendocrine cancers, both as a single agent and in combination with immune checkpoint inhibitors and other cancer treatments.

We selected SVV based on a number of attractive properties such as clinical safety and tolerability after intravenous dosing in patients, ability to replicate solid tumors, and its inability to insert into the host chromosome, eliminating the potential of insertional mutagenesis. SVV is a picornavirus that has tropism for several human tumor cell lines, in particular those with neuroendocrine features. Cancers with neuroendocrine features include SCLC and treatment-emergent small-cell neuroendocrine prostate cancer, or t-NEPC. In preclinical studies led by others, SVV was shown to result in complete and durable eradication of tumors in multiple mouse tumor models including NCI-H446 cells, and in a mouse model of medulloblastoma, SVV was shown to lead to increases in long term survival.

Past attempts at developing SVV monotherapy as a treatment for cancer have demonstrated increases in viral titers and no dose limiting toxicities in patients treated with low doses of virus in Phase 1 and Phase 2 trials. In these trials there was also evidence of selective viral replication in tumor tissue but not adjacent healthy tissue. These observations are consistent with the ability of SVV to specifically target and replicate in tumor cells and to be well-tolerated after intravenous dosing. In these trials, patients who received SVV also developed neutralizing antibodies, resulting in rapid clearance of the virus from circulation, limiting the ability to deliver repeat doses effectively, which we believe has hampered the therapeutic potential of prior SVV candidates.

In a preclinical study, an LNP-encapsulated synthetic SVV genome was administered intravenously in a mouse NCI-H446 model of human SCLC. As shown in the first figure below, this synthetic viral immunotherapy led to a significant reduction in tumor growth as compared to PBS and, as shown in the second figure below, the presence of neutralizing antibodies did not have a significant effect on the observed reduction in tumor growth.

Figure 21. Synthetic SVV led to tumor growth inhibition in the NCI-H446 SCLC tumor model when dosed intravenously twice every 7 days (n=8 per group). p< 0.0001 SVV versus PBS.

Figure 22. Efficacy of Synthetic SVV is not inhibited by SVV neutralizing antibodies. Synthetic SVV leads to tumor growth inhibition in the NCI-H446 SCLC model when dosed intravenously in presence of either control or neutralizing SVV antibodies (Ab). By contrast, the efficacy of SVV virions (SVV) dosed intravenously is inhibited by SVV neutralizing antibodies (n= 10 per group, p<0.0001 for Synthetic SVV + control Ab, Synthetic SVV + neutralizing Ab and SVV + control Ab vs. PBS or SVV + neutralizing Ab).

After intravenously dosing our LNP-encapsulated synthetic SVV genome, we examined multiple tissues from treated animals for the presence of negative-strand SVV RNA to assess the replication of our synthetic SVV in these tissues. Testing for the presence of negative-strand SVV RNA is a sensitive way of assessing the replication of our synthetic SVV that is based on the fact that SVV is a positive-strand RNA virus that requires a negative-strand RNA as a replication intermediate. As illustrated in the figure below, we found negative-strand RNA only in tumor tissue and not in the liver, demonstrating that the synthetic genomes were delivered to the tumor cells and resulted in the generation of fully infectious virions within the tumor, but did not replicate in tissues outside the tumor.

Figure 23. Replicative SVV intermediates, negative-strand RNA, are found in the tumors but not in liver. Each histogram represents a dosed animal. PBS = phosphate-buffered saline control; Neg = non-replicating SVV control; SVV = active, synthetic SVV; cDNA = complementary DNA; (-)ssRNA = negative single strand RNA.

We believe that the ability of SVV to target neuroendocrine tumors as a monotherapy, as well as the potential for adding benefit in combination with immune checkpoint inhibitors or chemotherapy, could allow us to bring therapeutic benefit to patients for whom there are limited treatment options.

Following the IND submission for ONCR-021 and pending further resources, we plan to submit an IND for ONCR-788 to enable its development in small cell lung cancer, neuroendocrine prostate and other neuroendocrine cancers, both as a single agent and in combination with immune checkpoint inhibitors and other cancer treatments.

The biotechnology and pharmaceutical industries are characterized by rapidly advancing technologies, intense competition and a strong emphasis on proprietary rights. We compete in the highly competitive markets that address cancer and face significant competition from many sources, including pharmaceutical, biopharmaceutical and biotechnology companies, as well as universities and private and public research institutions.

Any viral immunotherapies that we successfully develop and commercialize will compete with existing therapies and new therapies that may become available in the future. We are focused on developing next-generation viral immunotherapies for the treatment of cancer.

We are aware of other companies either marketing or focused on developing competing therapies for the treatment of cancer which generally fall into the following treatment groups:

With respect to our HSV Platform, we are aware of several other companies developing therapies based on HSV-1. Replimune has advanced assets based on HSV-1 in clinical development in the United States. Additionally, both ImmVira and Candel Therapeutics are advancing HSV-based product candidates in ongoing Phase 1 clinical studies. We have designed ONCR-177 to carry greater numbers of immunostimulatory transgenes than viral immunotherapies that are either currently approved or in clinical development. We have also designed ONCR-177 to maintain full viral replication competency in tumors and to be selectively attenuated in only normal tissues as opposed to both normal and tumor tissues.

With respect to our selectively self-amplifying vRNA Immunotherapy Platform, we are aware that Merck is developing CAVATAK (V937) based on coxsackievirus A21, and we are aware that Seneca Therapeutics is developing therapies based on the Seneca Valley Virus. Additionally, we are aware of other companies that are leveraging self-amplifying RNA in the development of their oncology therapeutics, including Gritstone Bio, Replicate Bioscience, Strand Therapeutics and Chimeron Bio.

Many of our potential competitors, alone or with their strategic partners, may have substantially greater financial, technical and other resources than we do, such as larger research and development, clinical, marketing and manufacturing organizations. Mergers and acquisitions in the biotechnology and pharmaceutical industries may result in even more resources being concentrated among a smaller number of competitors. Our commercial opportunity could be reduced or eliminated if competitors develop and commercialize products that are safer, more effective, are easier to administer or are less expensive alone or in combination with other therapies than any products that we may develop alone or in combination with other therapies, especially if these get to market sooner than our products. These and other third parties also compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies and technology licenses complementary to our programs or advantageous to our business.

Competitors also may obtain FDA or other regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market. Our viral immunotherapy product candidates, if and when marketed, will compete with a number of therapies that are currently marketed or in development that also target cancer but that utilize different mechanisms of action. To compete effectively with these agents, our product candidates will need to demonstrate advantages that lead to improved clinical efficacy and safety compared with these competitive agents. While we believe that our current and future product candidates have the potential to provide potent clinical

antitumor activity as monotherapies, we also plan to test them in combination with immune checkpoint inhibitors and chemotherapy agents. As such, if and when ultimately marketed, our product candidates may be in combination with checkpoint therapies in addition to other existing cancer therapies, including surgery, chemotherapy, radiation therapy and other biological therapies such as antibodies targeting particular surface receptors. We, therefore, believe that our product candidates, if and when marketed, may in some instances complement rather than compete directly with these existing treatment options.

We expect to face direct and increasing competition from a number of companies that are also seeking to develop cancer therapies based on viral immunotherapies and other ways to stimulate the immune system. We believe that our ability to successfully compete will depend, among other things, on our ability to:

We have strong in-house process development capabilities for HSV and are currently leveraging external CMOs to implement our in-house developed processes to produce drug substance and drug product. We require that our CMOs produce drug substance and finished drug product in accordance with cGMPs and all other applicable laws and regulations. We maintain agreements with our manufacturers that include confidentiality and intellectual property provisions to protect our proprietary rights related to our product candidates. We do not have long-term supply arrangements in place with our CMOs.

We have transferred our processes to commercial CMOs based in the United States for production, labeling, packaging and distribution of our initial batches of clinical material for our ongoing clinical trial of ONCR-177. Through the development of ONCR-177, we have focused on developing a full-scale manufacturing process intended to optimize production of clinical grade material. To this end, we have developed a closed, serum-free process that we expect will result in a high yield and lower overall cost of goods.

We continue to invest in our internal development capabilities to establish in-house manufacturing expertise to support our pipeline. We expect to continue to invest to build proprietary processes that will enable us to be at a competitive advantage when manufacturing product candidates for our HSV and vRNA Immunotherapy Platform programs, and expect that that our product candidates and their components from our vRNA Immunotherapy Platform will be manufactured in-house with minimal reliance on third-party CMOs. In the near term, we intend to continue to rely on third party CMOs from time to time while establishing our own cGMP manufacturing facilities and thereafter for the production of cGMP-grade material in order to secure our supply chain for future production needs. In December 2020, we entered into a lease agreement for approximately 88,000 square feet of manufacturing and office space in Andover, Massachusetts to support our advancing pipeline of product candidates. In November 2021, we entered into an amendment to our lease to increase the existing footprint of the facility to a total of approximately 105,000 square feet. We began process development activities at the facility in the second half of 2021 and we expect the facility to be operational in late 2022.

We strive to protect and enhance the proprietary technologies, inventions and improvements that we believe are important to our business, including seeking, maintaining and defending patent rights, whether developed internally or licensed from third parties. We also rely on know-how, continuing technological innovation and in-licensing opportunities to develop, strengthen and maintain our proprietary position in our field and other fields that are or may be important for the development of our business. Our policy is to seek to protect our proprietary position by, among other methods, pursuing and obtaining patent protection in the United States and in jurisdictions outside of the United States related to our proprietary technology, inventions, improvements, platforms and our product candidates that are important to the development and implementation of our business.

As of February 18, 2022, our patent portfolio consisted of 12 issued U.S. patents, 22 pending U.S. patent applications, and 28 issued foreign patents and approximately 141 pending foreign applications. These patents and patent applications include claims related to our platforms, products, methods, manufacturing processes, and potential future products and developments, with expected expiry dates not earlier than between 2026 and 2042.

As of February 18, 2022, our patent portfolio related to our HSV Platform includes 14 owned or licensed patent families, which relate generally to the composition of our current and potential future products, and their methods of use.

We solely own seven patent families, which include three issued U.S. patents, four issued foreign patents, seven pending U.S. patent applications, and pending foreign counterparts in Europe, Asia, Canada, Australia, and Central and South America. One issued patent, which expires on January 27, 2037, includes claims directed at particular microRNA-attenuated HSV vectors, expression of certain therapeutic payloads, and their methods of use in the treatment of cancer. The other two issued U.S. patents, which expire on June 30, 2037, include claims directed at HSV vectors comprising particular combinations of certain therapeutic payloads. The pending applications include additional claims for microRNA-attenuated HSV vectors including the HSV vector utilized in our ONCR-177 product candidate, HSV vectors encoding particular therapeutic payloads, and their methods of use in the treatment of cancer. Patent applications are pending in these families in more than 17 jurisdictions worldwide, including Argentina, Australia, Brazil, Canada, China, Europe, Israel, India, Japan, Korea, Mexico, New Zealand, Russia, Singapore, South Africa and Taiwan. Any patents that may issue from these pending applications are expected to expire between 2037 and 2042, absent any patent term adjustments or extensions.

We have exclusively licensed from the University of Pittsburgh rights in three patent families related to HSV Platform vectors, including certain glycoprotein modifications, a deletion of repeated HSV genes, certain micro-RNA-attenuated HSV vectors, and expression of certain therapeutic proteins from HSV vectors, and their methods of use. These patent families include six issued U.S. patents, 14 issued patents in jurisdictions including Australia, China, Europe, Israel, Japan, Korea, Mexico, Russia, Singapore and South Africa, three pending U.S. patent applications and 20 pending foreign applications pending in various jurisdictions worldwide, including Australia, Brazil, Canada, China, Europe, India, Japan, Korea, Mexico, New Zealand and Singapore. Patents in these families are expected to expire between 2031 and 2037, absent any patent term adjustments or extensions. We have also exclusively licensed from Ospedale San Raffaele S.r.l. and Fondazione Telethon rights in one patent family related to micro-RNA attenuation of therapeutic payloads. This family includes six issued patents and seven pending applications in the U.S. and foreign jurisdictions. Patents in this family are expected to expire in 2026, absent any patent term adjustments or extensions. We have exclusively licensed from Northwestern University rights in one patent family related to mutations in the UL37 HSV gene. Patents in this family are expected to expire in 2036, absent any patent term adjustments or extensions. We have also exclusively licensed from WuXi Biologics Ireland Limited rights in one patent family related to novel PD-1 antagonist sequences. This family includes seven pending applications in the United States, China, Canada, Hong Kong, Taiwan, Europe and Japan. Patents in this family are expected to expire in 2039, absent any patent term adjustments or extensions. Finally, we have also exclusively licensed from Gaeta Therapeutics Ltd. rights in one patent family related to local delivery or expression of IL-12 with a systemic checkpoint inhibitor. This family includes five issued patents and six pending applications in the U.S. and foreign jurisdictions. Patents in this family are expected to expire in 2032, absent any patent term adjustments or extensions.

As of February 18, 2022, our patent portfolio related to our vRNA Immunotherapy Platform includes eight patent families, which relate generally to synthetic virus compositions and methods of use in the treatment of various cancers.

We solely own these eight patent families. One is a pending provisional application that will convert in December 2022. Three families currently have applications pending in the United States and in foreign jurisdictions including Australia, Brazil, Canada, China, Europe, Israel, India, Japan, Korea, Mexico, New Zealand, Singapore and South Africa. Four families have pending PCT applications that will enter national stages between November 2022 and August 2023. These applications cover the compositions related to polynucleotides, expression of therapeutic payloads, nanoparticle formulations, bispecific payload molecules, diagnostic biomarkers and methods related to their manufacturing and use. We intend to file national phase applications in multiple jurisdictions, including the United States, Europe, Asia, and Central and South America. Any patents that may issue from these pending applications are expected to expire between 2039 and 2042, absent any patent term adjustments or extensions.

Individual patents extend for varying periods depending on the date of filing of the patent application or the date of patent issuance and the legal term of patents in the countries in which they are obtained. Generally, patents issued for regularly filed applications in the United States are granted a term of 20 years from the earliest effective non-provisional filing date. In addition, in certain instances, a patent term can be extended to recapture a portion of the U.S. Patent and Trademark Office, or the USPTO, delay in issuing the patent as well as a portion of the term effectively lost as a result of the FDA regulatory review period. However, as to the FDA component, the restoration period cannot be longer than five years and the total patent term including the restoration period must not exceed 14 years following FDA approval. The duration of foreign patents varies in accordance with provisions of applicable local law, but typically is also 20 years from the earliest effective filing date. However, the actual protection afforded by a patent varies on a product by product basis, from country to country and depends upon many factors, including the type of patent, the scope of its coverage, the availability of regulatory-related extensions, the availability of legal remedies in a particular country and the validity and enforceability of the patent.

Furthermore, we rely upon trade secrets and know-how and continuing technological innovation to develop and maintain our competitive position. We seek to protect our proprietary information, in part, using confidentiality agreements with our collaborators, employees and consultants and invention assignment agreements with our employees. We also have confidentiality agreements or invention assignment agreements with selected consultants. These agreements are designed to protect our proprietary information and, in the case of the invention assignment agreements, to grant us ownership of technologies that are developed through a relationship

with a third party. These agreements may be breached, and we may not have adequate remedies for any breach. In addition, our trade secrets may otherwise become known or be independently discovered by competitors. To the extent that our collaborators, employees and consultants use intellectual property owned by others in their work for us, disputes may arise as to the rights in related or resulting know-how and inventions.

Our commercial success will also depend in part on not infringing upon the proprietary rights of third parties. It is uncertain whether the issuance of any third-party patent would require us to alter our development or commercial strategies, or our product candidates or processes, obtain licenses, or cease certain activities. Our breach of any license agreements or failure to obtain a license to proprietary rights that we may require to develop or commercialize our future product candidates may have an adverse impact on us. If third parties have prepared and filed patent applications prior to March 16, 2013 in the United States that also claim technology to which we have rights, we may have to participate in interference proceedings in the USPTO, to determine priority of invention. For more information, please see “Risk Factors—Risks Related to Intellectual Property.”

In March 2016, we entered into a license agreement with the University of Pittsburgh, which was subsequently amended in June 2016, November 2016 and October 2019. Under the license agreement with University of Pittsburgh, or the University of Pittsburgh Agreement, we obtained an exclusive, worldwide license from University of Pittsburgh to three patent families in fields specified in the University of Pittsburgh Agreement including all of oncology. We have the right to grant sublicenses of the foregoing license subject to certain limitations. We are required to use commercially reasonable best efforts to meet certain development milestones regarding licensed products.

Under the terms of the University of Pittsburgh Agreement, we made an initial license payment of $0.1 million. Additionally, we are required to pay a five figure annual maintenance fee until net sales for the first licensed product are achieved and certain clinical and commercial milestone payments for the first product to achieve such milestones in an aggregate amount of $2.6 million. We are also obligated to pay a low single digit royalty on net sales of licensed products, subject to specified annual minimum royalties. The obligation to pay royalties under the University of Pittsburgh Agreement expires on a licensed product-by-licensed product and country-by-country basis upon the expiry of the last valid claim of the licensed patents that cover such licensed product in such country. The royalty rate is subject to reduction in the event that it is necessary for us to obtain a license to any third party intellectual property related to the licensed patents. We are also obligated to pay a percentage of non-royalty-related payments received by us from sublicensees.

The University of Pittsburgh Agreement expires upon the last to expire valid claim of a licensed patent. University of Pittsburgh may terminate upon our uncured breach or insolvency. We may terminate the agreement upon specified prior written notice to University of Pittsburgh.

In September 2016, we entered into a separate license agreement with University of Pittsburgh. Under such license agreement with University of Pittsburgh, or the Biomaterials Agreement, we obtained an exclusive license under certain materials of University of Pittsburgh related to the HSV Platform to make, have made, sell, have sold, use, import, export, modify and derivatize such materials for any and all purposes.

Under the terms of the Biomaterials Agreement, we made an initial low five figure license payment. Additionally, we are required to pay a five figure annual maintenance fee and a low six figure commercial milestone payment. We are also obligated to pay certain amounts in the event we grant a sublicense to a third party.

The Biomaterials Agreement expires in September 2046 and is renewable for successive thirty year terms upon written approval by University of Pittsburgh. University of Pittsburgh may terminate the agreement upon our uncured breach or insolvency. We may terminate the agreement upon specified prior written notice to University of Pittsburgh.

In December 2015, we entered into a license agreement with Ospedale San Raffaele S.r.l., or OSR, and Fondazione Telethon, or FT, which was subsequently amended in July 2017, or the TIGET Agreement. Under the TIGET Agreement, we obtained an exclusive, worldwide license, with the right to sublicense, under certain patents of OSR and FT to research, develop, make, have made, use, sell, offer for sale and import licensed products for use in the prevention and treatment of human cancer using HSV. We also have an exclusive option to obtain an exclusive license to additional oncolytic viruses. We are required to use commercially reasonable efforts to develop and commercialize a licensed product for each licensed virus.

Under the terms of the TIGET Agreement, we made an initial license payment of $0.1 million. Additionally, we are required to pay a high five figure annual maintenance fee, and certain clinical and regulatory milestone payments for the first product to achieve such milestones on an indication-by-indication basis, which milestone payments are $3.9 million in the aggregate for the first indication and $5.7 million in the aggregate for each subsequent indication. We are also obligated to pay tiered royalties on net sales of licensed

products ranging in the low-single digits. The royalty rates are subject to reduction in the event that it is necessary for us to obtain a license to any third party intellectual property related to the licensed products. The obligation to pay royalties under the TIGET Agreement expires on a licensed product-by-licensed product and country-by-country basis upon expiry of the last valid claim of the licensed patents that cover such licensed product in such country. We are also obligated to pay a percentage of non-royalty-related payments received by us from sublicensees ranging from a mid-single digit to low double digits.

The TIGET Agreement expires upon expiry of the last remaining royalty obligation for a licensed product. Under the TIGET Agreement, either party may terminate the agreement upon an uncured material breach or insolvency of the other party. We may terminate the agreement on a licensed virus by licensed virus basis upon specified prior written notice to OSR and FT. Additionally, OSR and FT may terminate the agreement on a licensed virus by licensed virus basis if we fail to demonstrate pre-clinical data in in vivo animal models for any such virus.

In July 2016, we entered into a license agreement with The Washington University, or Washington. Under the license agreement with Washington, or the Washington Agreement, we obtained a non-exclusive, worldwide license, with the right to sublicense, to certain tangible materials and property of Washington related to the HSV Platform, as well as an exclusive, worldwide license to replication competent modifications of such materials and property related to the HSV Platform not made by Washington.

Under the terms of the Washington Agreement, we made an initial low five figure license payment. Additionally, we are required to pay a mid four figure annual maintenance fee. We are also obligated to pay a less than single digit royalty on net sales of licensed products.

The Washington Agreement expires on the 10th anniversary of the first commercial sale of a licensed product. Under the Washington Agreement, either party may terminate the agreement upon an uncured material breach of the other party. We may terminate the agreement upon prior written notice to Washington. Washington may terminate the agreement immediately in the event of our insolvency and certain other specified breaches of the agreement by us.

In December 2018, we entered into a license agreement with Northwestern University, or Northwestern, which was subsequently amended in September 2019. Under the license agreement with Northwestern, or the Northwestern Agreement, we obtained an exclusive, worldwide license under certain patents of Northwestern, Trustees of Tufts College and NUTech Ventures and a non-exclusive, worldwide license under certain know-how of Northwestern, Trustees of Tufts College and NUTech Ventures, in either case to make, have made, use, import, offer for sale and sell oncolytic viruses for use in the treatment or prevention of cancer in animals or humans, which use specifically excludes diagnostics, human and animal vaccine development and use, and veterinary use. We have the right to grant sublicenses of the foregoing license subject to certain limitations. We are required to use efforts to meet certain development milestone regarding licensed products.

Under the terms of the Northwestern Agreement, we made an initial license payment of approximately $0.1 million. Additionally, we are required to pay an annual maintenance fee ranging in the low five figures until a certain period after regulatory approval for the first licensed product is obtained and certain clinical and commercial milestone payments for the first product to achieve such milestones in an aggregate amount of $4.1 million. We are also obligated to pay a low single digit royalty on net sales of licensed products, subject to certain annual minimum royalties ranging in the low to mid five figures, but only to the extent a product is covered by a valid claim of a licensed patent at the time of first commercial sale. The obligation to pay royalties under the Northwestern Agreement expires on a licensed product-by-licensed product and country-by-country basis upon the later of expiry of the last valid claim of the licensed patents that cover such licensed product in such country and the 10th anniversary of the first commercial sale of such product in such country. The royalty rate is subject to reduction for lack of any valid claim covering such product in a country. We are also obligated to pay certain amounts in the event we grant a sublicense of commercial rights to a third party, which payments vary from a fixed amount in the upper five figures to a low double digit percentage of non-royalty related payments received by us.

The Northwestern Agreement expires on a licensed product-by-licensed product and country-by-country basis upon expiry of the applicable royalty obligation for such licensed product in such country. Under the Northwestern Agreement, either party may terminate the agreement upon an uncured material breach by the other party. We may terminate the agreement upon specified prior written notice to Northwestern. Northwestern may terminate the agreement in the event of our insolvency. Additionally, in the event of our failure to use efforts to meet certain diligence milestones, Northwestern may after a specified cure period, elect to either terminate the agreement or render the license non-exclusive. If Northwestern elects to render our license non-exclusive, then all our payment obligations under the agreement will be reduced by a specified percentage.

In March 2016, in connection with the sale of Series A convertible preferred stock, we entered into a royalty transfer agreement with MPM Oncology Charitable Foundation, Inc. and UBS Optimus Foundation, or the Royalty Transfer Agreement. We have agreed to pay a royalty of 1%, in the aggregate, of net sales of our products. Our obligation to pay a royalty expires on a product-by-product and

country-by-country basis upon the later of the 12th anniversary of the first commercial sale of such product in such country and expiration of the last valid claim in such country covering such product. The royalty rate is subject to a specified reduction for lack of any valid claim covering such product in a country. The obligation to pay royalties under the Royalty Transfer Agreement shall not apply to any product that would only infringe our intellectual property rights or to any product of an acquirer, assignee of the agreement or merger partner of the company so long as such product does not incorporate any of our pre-acquisition intellectual property.

In July 2019, we entered into a license agreement with WuXi Biologics Ireland Limited, or WuXi. Under the license agreement with WuXi, or the WuXi Agreement, we obtained an exclusive, worldwide license, with the right to sublicense, under certain patents and technology of WuXi to research, develop, manufacture and commercialize licensed products for the treatment and prevention of human or animal diseases. We are required to use commercially reasonable efforts to develop and commercialize licensed products.

Under the terms of the WuXi Agreement, we made an initial license payment of $0.3 million. Additionally, we are required to pay certain clinical milestone payments for the first product developed in an aggregate amount of $8.0 million and certain commercial milestone payments for the first three products developed in an aggregate amount of $27.0 million per product. We are also obligated to pay tiered royalties on net sales of licensed products ranging in the low-single digits. The obligation to pay royalties under the WuXi Agreement expires on a licensed product-by-licensed product and country-by-country basis upon expiry of the last valid claim of the licensed patents that cover such licensed product in such country.

The WuXi Agreement expires on a licensed product-by-licensed product and country-by-country basis upon expiry of the last valid claim of the licensed patents that cover such licensed product in such country. Under the WuXi Agreement, either party may terminate the agreement upon an uncured material breach or insolvency of the other party. Additionally, we may terminate the agreement upon specified prior written notice to WuXi. WuXi may terminate the agreement for any challenge brought by us, our affiliates and our sublicensees of the validity, scope, enforceability or patentability of the licensed patents, unless we abandon such challenge, or in the case of our sublicensees, terminate the applicable sublicense.

In July 2020, we entered into a clinical trial collaboration and supply agreement, or the MSD Agreement, with MSD International GmbH, an affiliate of Merck & Co., Inc. (known as MSD outside the United States and Canada), to evaluate the safety and tolerability of ONCR-177 combined with Merck’s cancer immunotherapy KEYTRUDA (pembrolizumab), a humanized anti-human PD-1 monoclonal antibody, in our Phase 1 clinical trial in patients with solid tumors. Under the MSD Agreement, we will conduct the trial at our own cost and MSD will contribute its compound for use in the clinical trial without financial obligation to us, except that we may be required to reimburse MSD for the cost of its compound upon certain early termination events. The parties will equally own the clinical data and inventions arising from the combination study, with the exception of inventions relating solely to each party’s compound class. The MSD Agreement will expire upon the delivery of a written report on the results of the study, unless earlier terminated or agreed by the parties.

Each party has the right to terminate the MSD Agreement in the event of an uncured material breach by the other party. In addition, each party may terminate the agreement upon its own good faith determination that the study may unreasonably affect patient safety or that termination is required for medical, scientific, legal or regulatory reasons, or if an applicable regulatory authority takes any action that prevents the supply of its respective compound for use in the trial. In addition, MSD may terminate the agreement and its supply of KEYTRUDA if MSD believes in good faith that its compound is being used in an unsafe manner in the trial and we fail to promptly incorporate any requested changes into the trial protocol.

In November 2021, we entered into a license agreement with Gaeta Therapeutics Ltd., or Gaeta, pursuant to which Gaeta has granted us an exclusive, worldwide sublicense under certain patent rights related to the local delivery or expression of IL-12 with a systemic checkpoint inhibitor to make and have made, use, have used, sell, offer for sale, export and import any products developed by the Company that would otherwise infringe upon such patent rights when administered in combination with a checkpoint blockade agent in the field of oncolytic viral therapy. Gaeta is the licensee of these patent rights under a separate license agreement with the University of Zurich, or UZH, pursuant to which Gaeta is entitled to sublicense the patent rights and has agreed not to enter into (and to ensure that UZH not enter into) any further sublicense with respect to the patent rights in the field.

In connection with our entry into the license agreement with Gaeta, we have agreed to pay Gaeta an up-front fee of $0.2 million. We are obligated to make certain additional milestone payments to Gaeta, including a low six-figure payment related to the achievement of a certain patent-related milestone in the United States, and certain clinical and regulatory milestone payments on a product-by-product and indication-by-indication basis, which milestone payments amount to $7.5 million in the aggregate for a given product or indication, with an additional annual payment in the low single-digit millions following regulatory approval of each product. We are also obligated to pay tiered royalties on cumulative net sales of all products ranging from the low to mid single-digit millions, up to

$2.5 million in the aggregate for cumulative net sales in excess of a mid-nine digit threshold with additional payments in the mid single-digit millions thereafter upon the achievement of additional net sales milestones.

The license agreement with Gaeta will terminate upon the last to expire of any patent included in the applicable patent rights. Additionally, Gaeta may terminate the agreement for cause upon written notice to us if (i) we directly or indirectly oppose or dispute the grant of letters patent or any patent application within the patent rights, (ii) we are in material breach of the license agreement with Gaeta and fail to remedy such breach within sixty days of Gaeta providing notice thereof in writing, or (iii) we are deemed bankrupt or insolvent or become subject to similar proceedings. We may terminate the license agreement with Gaeta with or without cause upon sixty days’ prior written notice to Gaeta. In the event that UZH terminates the head license with Gaeta, we have the right to become a direct licensee of UZH with substantially the same rights and obligations as it is entitled to under the license agreement with Gaeta, subject to certain qualifications.

In the United States, the FDA regulates biologic products under the Federal Food, Drug, and Cosmetic Act, or the FDCA, the Public Health Service Act, or the PHSA, and regulations and guidance implementing these laws. The FDCA, PHSA and their corresponding regulations govern, among other things, the testing, manufacturing, safety, efficacy, labeling, packaging, storage, record keeping, distribution, reporting, advertising and other promotional practices involving biologic products. Clearance from the FDA is required before conducting human clinical testing of biologic products. FDA licensure also must be obtained before marketing of biologic products. The process of obtaining regulatory approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial resources.

Any biologic product must be licensed by the FDA before it may be legally marketed in the United States. The process required by the FDA before a biologic product candidate may be marketed in the United States generally involves the following:

Before testing any biologic product candidate in humans the product candidate must undergo preclinical testing. Preclinical tests, also referred to as nonclinical studies, include laboratory evaluations of product chemistry, toxicity and formulation, as well as in vivo studies to assess the potential safety and activity of the product candidate and to establish a rationale for therapeutic use. The conduct of the preclinical tests must comply with federal regulations and requirements including GLPs.

Concurrent with clinical trials, companies usually must complete some long-term preclinical testing, such as animal tests of reproductive adverse events and carcinogenicity, and must also develop additional information about the chemistry and physical characteristics of the drug and finalize a process for manufacturing the drug in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other things, the manufacturer must develop methods for testing the identity, strength, quality and purity of the final drug product. Additionally, appropriate packaging must be selected and tested and stability studies must be conducted to demonstrate that the product candidate does not undergo unacceptable deterioration over its shelf life.

The clinical trial sponsor must submit the results of the preclinical tests, together with manufacturing information, analytical data, any available clinical data or literature and a proposed clinical protocol, to the FDA as part of the IND. Some preclinical testing may continue even after the IND is submitted. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA places the clinical trial on a clinical hold. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. The FDA also may impose clinical holds on a biologic product candidate at any time before or during clinical trials due to safety concerns or non-compliance. If the FDA imposes a clinical hold, trials may not recommence without FDA authorization and then only under terms authorized by the FDA. Accordingly, we cannot be sure that submission of an IND will result in the FDA allowing clinical studies to begin, or that, once begun, issues will not arise that suspend or terminate such studies.

Clinical trials involve the administration of the biologic product candidate to healthy volunteers or patients under the supervision of qualified investigators which generally are physicians not employed by, or under, the control of the trial sponsor. Clinical trials are conducted under written study protocols detailing, among other things, the objectives of the clinical trial, dosing procedures, subject selection and exclusion criteria and the parameters to be used to monitor subject safety, including stopping rules that assure a clinical trial will be stopped if certain adverse events should occur. Each protocol and any amendments to the protocol must be submitted to the FDA as part of the IND. An IND automatically becomes effective 30 days after receipt by the FDA, unless before that time the FDA raises concerns or questions related to a proposed clinical trial and places the trial on clinical hold, including concerns that human research subjects will be exposed to unreasonable health risks. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. Accordingly, submission of an IND may or may not result in the FDA allowing clinical trials to commence. Clinical trials must be conducted and monitored in accordance with the FDA’s regulations comprising the GCP requirements, including the requirement that all research subjects provide informed consent.

Further, each clinical trial must be reviewed and approved by an IRB at or servicing each institution at which the clinical trial will be conducted. An IRB is charged with protecting the welfare and rights of trial participants and considers items such as whether the risks to individuals participating in the clinical trials are minimized and are reasonable in relation to anticipated benefits. The IRB also approves the form and content of the informed consent that must be signed by each clinical trial subject, or their legal representative, reviews and approves the study protocol, and must monitor the clinical trial until completed.

Human clinical trials typically are conducted in three sequential phases that may overlap or be combined:

Post-approval clinical trials, sometimes referred to as Phase 4 clinical trials, may be conducted after initial approval. These clinical trials are used to gain additional experience from the treatment of patients in the intended therapeutic indication, particularly for long-term safety follow-up.

During all phases of clinical development, regulatory agencies require extensive monitoring and auditing of all clinical activities, clinical data and clinical trial investigators. Annual progress reports detailing the results of the clinical trials must be submitted to the FDA.

Written IND safety reports must be promptly submitted to the FDA and the investigators for: serious and unexpected adverse events; any findings from other trials, in vivo laboratory tests or in vitro testing that suggest a significant risk for human subjects; or any clinically important increase in the rate of a serious suspected adverse reaction over that listed in the protocol or investigator brochure. The sponsor must submit an IND safety report within 15 calendar days after the sponsor determines that the information qualifies for reporting. The sponsor also must notify the FDA of any unexpected fatal or life-threatening suspected adverse reaction within seven calendar days after the sponsor’s initial receipt of the information.

The FDA or the sponsor or its data safety monitoring board may suspend a clinical trial at any time on various grounds, including a finding that the research subjects or patients are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRB’s requirements or if the biologic product candidate has been associated with unexpected serious harm to patients.

Manufacturers of biologics must comply with applicable cGMP regulations, including quality control and quality assurance and maintenance of records and documentation. Manufacturers and others involved in the manufacture and distribution of such products also must register their establishments with the FDA and certain state agencies. Both domestic and foreign manufacturing establishments must register and provide additional information to the FDA upon their initial participation in the manufacturing process. Establishments may be subject to periodic, unannounced inspections by government authorities to ensure compliance with cGMP requirements and other laws. Discovery of problems may result in a government entity placing restrictions on a product, manufacturer or holder of an approved BLA, and may extend to requiring withdrawal of the product from the market. The FDA will not approve a BLA unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specification.

Concurrent with clinical trials, companies usually complete additional preclinical studies and must also develop additional information about the physical characteristics of the biologic product candidate as well as finalize a process for manufacturing the product candidate in commercial quantities in accordance with cGMP requirements. To help reduce the risk of the introduction of adventitious agents or of causing other adverse events with the use of biologic products, the PHSA emphasizes the importance of manufacturing control for products whose attributes cannot be precisely defined. The manufacturing process must be capable of consistently producing quality batches of the product candidate and, among other requirements, the sponsor must develop methods for testing the identity, strength, quality, potency and purity of the final biologic product. Additionally, appropriate packaging must be selected and tested and stability studies must be conducted to demonstrate that the biologic product candidate does not undergo unacceptable deterioration over its shelf life.

The results of the preclinical tests and clinical trials, together with detailed information relating to the product’s CMC and proposed labeling, among other things, are submitted to the FDA as part of a BLA requesting approval to market the product for one or more indications.

Under the Prescription Drug User Fee Act, or PDUFA, as amended, each BLA must be accompanied by a significant user fee. The FDA adjusts the PDUFA user fees on an annual basis. The PDUFA also imposes an annual product fee for biologics and an annual establishment license fee on facilities used to manufacture prescription biologics. Fee waivers or reductions are available in certain circumstances, including a waiver of the application fee for the first application filed by a small business. Additionally, no user fees are assessed on BLAs for product candidates designated as orphan drugs, unless the product candidate also includes a non-orphan indication.

The FDA reviews a BLA within 60 days of submission to determine if it is substantially complete before the agency accepts it for filing. The FDA may refuse to file any BLA that it deems incomplete or not properly reviewable at the time of submission and may request additional information. In that event, the BLA must be resubmitted with the additional information. The resubmitted application also is subject to review before the FDA accepts it for filing. Once the submission is accepted for filing, the FDA begins an in-depth, substantive review of the BLA.

The FDA reviews the BLA to determine, among other things, whether the proposed product candidate is safe and potent, or effective, for its intended use, has an acceptable purity profile and whether the product candidate is being manufactured in accordance with cGMP to assure and preserve the product candidate’s identity, safety, strength, quality, potency and purity. The FDA may refer applications for novel biologic products or biologic products that present difficult questions of safety or efficacy to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions. During the product approval process, the FDA also will determine whether a risk evaluation and mitigation strategy, or REMS, is necessary to assure the safe use of the product candidate. REMS use risk minimization strategies beyond the professional labeling to ensure that the benefits of the product outweigh the potential risks. To determine whether a REMS is needed, the FDA will consider the size of the population likely to use the product, seriousness of the disease, expected benefit of the product, expected duration of treatment, seriousness of known or potential adverse events, and whether the product is a new molecular entity. A REMS could include medication guides, physician communication plans and elements to assure safe use, such as restricted distribution methods, patient registries and other risk minimization tools. If the FDA concludes a REMS is needed, the sponsor of the BLA must submit a proposed REMS; the FDA will not approve the BLA without a REMS, if required.

Before approving a BLA, the FDA will inspect the facilities at which the product candidate is manufactured. The FDA will not approve the product candidate unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product candidate within required specifications. Additionally, before approving a BLA, the FDA typically will inspect one or more clinical sites to assure that the clinical trials were conducted in compliance with IND trial requirements and GCP requirements.

On the basis of the BLA and accompanying information, including the results of the inspection of the manufacturing facilities, the FDA may issue an approval letter or a complete response letter. An approval letter authorizes commercial marketing of the biologic product with specific prescribing information for specific indications. A complete response letter generally outlines the deficiencies in the submission and may require substantial additional testing or information in order for the FDA to reconsider the application. If and when those deficiencies have been addressed to the FDA’s satisfaction in a resubmission of the BLA, the FDA will issue an approval letter.

If a product candidate receives regulatory approval, the approval may be significantly limited to specific diseases and dosages or the indications for use may otherwise be limited. Further, the FDA may require that certain contraindications, warnings or precautions be included in the product labeling. The FDA may impose restrictions and conditions on product distribution, prescribing or dispensing in the form of a REMS, or otherwise limit the scope of any approval. In addition, the FDA may require post-marketing clinical trials, sometimes referred to as Phase 4 clinical trials, designed to further assess a biologic product’s safety and effectiveness, and testing and surveillance programs to monitor the safety of approved products that have been commercialized.

The FDA has agreed to specified performance goals in the review of BLAs under the PDUFA. One such goal is to review standard BLAs in ten months after the FDA accepts the BLA for filing, and priority BLAs in six months, whereupon a review decision is to be made. The FDA does not always meet its PDUFA goal dates for standard and priority BLAs and its review goals are subject to change from time to time. The review process and the PDUFA goal date may be extended by three months if the FDA requests or the BLA sponsor otherwise provides additional information or clarification regarding information already provided in the submission within the last three months before the PDUFA goal date.

Rigorous and extensive FDA regulation of biologic products continues after approval, particularly with respect to cGMP requirements. Manufacturers are required to comply with applicable requirements in the cGMP regulations, including quality control and quality assurance and maintenance of records and documentation. Other post-approval requirements applicable to biologic products include reporting of cGMP deviations that may affect the identity, potency, purity and overall safety of a distributed product, record-keeping requirements, reporting of adverse effects, reporting updated safety and efficacy information and complying with electronic record and signature requirements. After a BLA is approved, the product also may be subject to official lot release. If the product is subject to official release by the FDA, the manufacturer submits samples of each lot of product to the FDA, together with a release protocol, showing a summary of the history of manufacture of the lot and the results of all tests performed on the lot. The FDA also may perform certain confirmatory tests on lots of some products before releasing the lots for distribution. In addition, the FDA conducts laboratory research related to the regulatory standards on the safety, purity, potency and effectiveness of biologic products.

A sponsor also must comply with the FDA’s advertising and promotion requirements, such as the prohibition on promoting products for uses or in patient populations that are not described in the product’s approved labeling (known as “off-label use”). The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to significant liability. Violations relating to the promotion of off-label uses may lead to investigations alleging violations of federal and state healthcare fraud and abuse and other laws, as well as state consumer protection laws. Companies, however, may generally share truthful and not misleading information that is otherwise consistent with a product’s FDA approved labeling. Discovery of previously unknown problems or the failure to comply with the applicable regulatory requirements may result in restrictions on the marketing of a product or withdrawal of the product from the market as well as possible civil or criminal sanctions. In addition, changes to the manufacturing process or facility generally require prior FDA approval before being implemented and other types of changes to the approved product, such as adding new indications and additional labeling claims, are also subject to further FDA review and approval.

Failure to comply with the applicable U.S. requirements at any time during the product development process, approval process or after approval, may subject an applicant or manufacturer to administrative or judicial civil or criminal actions and adverse publicity. These actions could include refusal to approve pending applications or supplemental applications, withdrawal of an approval, clinical hold, suspension or termination of a clinical trial by an IRB, warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines or other monetary penalties, refusals of government contracts, mandated corrective advertising or communications with healthcare providers, debarment, restitution, disgorgement of profits or other civil or criminal penalties.

Depending upon the timing, duration and specifics of FDA approval of product candidates, some of a sponsor’s U.S. patents may be eligible for limited patent term extension under the Drug Price Competition and Patent Term Restoration Act of 1984. The Hatch-Waxman Amendments permit a patent restoration term of up to five years as compensation for patent term lost during product development and FDA regulatory review process. However, patent term restoration cannot extend the remaining term of a patent beyond a total of 14 years from the product’s approval date. The patent term restoration period generally is one-half the time between the effective date of an IND and the submission date of a BLA plus the time between the submission date of a BLA and the approval of that application. Only one patent applicable to an approved biologic product is eligible for the extension and the application for the extension must be submitted prior to the expiration of the patent. Moreover, a given patent may only be extended once based on a single product. The USPTO, in consultation with the FDA, reviews and approves the application for any patent term extension or restoration.

Healthcare providers and third-party payors play a primary role in the recommendation and use of pharmaceutical products that are granted marketing approval. Arrangements with third-party payors, existing or potential customers and referral sources, including healthcare providers, are subject to broadly applicable fraud and abuse, and these laws and regulations may constrain the business or financial arrangements and relationships through which manufacturers conduct clinical research, market, sell and distribute the products for which they obtain marketing approval. Such restrictions under applicable federal and state healthcare laws and regulations include the following:

Violation of the laws described above or any other governmental laws and regulations may result in significant penalties, including administrative, civil and criminal penalties, damages, fines, the curtailment or restructuring of operations, the exclusion from participation in federal and state healthcare programs, disgorgement, contractual damages, reputational harm, diminished profits and future earnings, imprisonment, and additional reporting requirements and oversight if a person becomes subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws. Furthermore, efforts to ensure that business activities and business arrangements comply with applicable healthcare laws and regulations can be costly for manufacturers of branded prescription products.

Significant uncertainty exists as to the coverage and reimbursement status of any products for which we may obtain regulatory approval. In the United States, sales of any product candidates for which regulatory approval for commercial sale is obtained will depend in part on the availability of coverage and adequate reimbursement from third-party payors. Third-party payors include government authorities and health programs in the United States such as Medicare and Medicaid, managed care providers, private health insurers and other organizations. These third-party payors are increasingly reducing reimbursements for medical products and services. The process for determining whether a payor will provide coverage for a drug product may be separate from the process for setting the reimbursement rate that the payor will pay for the drug product. Third-party payors may limit coverage to specific drug products on an approved list, or formulary, which might not include all of FDA-approved drugs for a particular indication. Additionally, the containment of healthcare costs has become a priority of federal and state governments, and the prices of drugs have been a focus in this effort. The U.S. government, state legislatures and foreign governments have shown significant interest in implementing cost-containment programs, including price controls, restrictions on reimbursement and requirements for substitution of generic products. Adoption of price controls and cost-containment measures, and adoption of more restrictive policies in jurisdictions with existing controls and measures, could further limit our net revenue and results.

A payor’s decision to provide coverage for a drug product does not imply that an adequate reimbursement rate will be approved. Further, coverage and reimbursement for drug products can differ significantly from payor to payor. As a result, the coverage determination process is often a time-consuming and costly process that will require us to provide scientific and clinical support for the use of our products to each payor separately, with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the first instance.

Third-party payors are increasingly challenging the price and examining the medical necessity and cost-effectiveness of medical products and services, in addition to their safety and efficacy. New metrics frequently are used as the basis for reimbursement rates, such as average sales price, average manufacturer price and actual acquisition cost. In order to obtain coverage and reimbursement for any product that might be approved for sale, it may be necessary to conduct expensive pharmacoeconomic studies in order to demonstrate the medical necessity and cost-effectiveness of the products, in addition to the costs required to obtain regulatory approvals. If third-party payors do not consider a product to be cost-effective compared to other available therapies, they may not cover the product after approval as a benefit under their plans or, if they do, the level of payment may not be sufficient to allow a company to sell its products at a profit.

The marketability of any product candidates for which we or our collaborators receive regulatory approval for commercial sale may suffer if the government and third-party payors fail to provide adequate coverage and reimbursement. In addition, emphasis on managed care in the United States has increased and we expect will continue to increase the pressure on pharmaceutical pricing. Coverage policies and third-party reimbursement rates may change at any time. Even if favorable coverage and reimbursement status is attained for one or more products for which we or our collaborators receive regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

In the European Union, pricing and reimbursement schemes vary widely from country to country. Some countries provide that products may be marketed only after a reimbursement price has been agreed. Some countries may require the completion of additional studies that compare the cost-effectiveness of a particular product candidate to currently available therapies. European Union member states may approve a specific price for a product or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the product on the market. Other member states allow companies to fix their own prices for products, but monitor and control company profits. The downward pressure on health care costs has become intense. As a result, increasingly high barriers are being erected to the entry of new products. In addition, in some countries, cross-border imports from low-priced markets exert competitive pressure that may reduce pricing within a country. Any country that has price controls or reimbursement limitations may not allow favorable reimbursement and pricing arrangements.

The United States and some foreign jurisdictions are considering or have enacted a number of reform proposals to change the healthcare system. There is significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality or expanding access. In the United States, the pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by federal and state legislative initiatives, including those designed to limit the pricing, coverage, and reimbursement of pharmaceutical and biopharmaceutical products, especially under government-funded health care programs, and increased governmental control of drug pricing.

By way of example, in March 2010, the ACA was signed into law, intended to broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance remedies against fraud and abuse, add transparency requirements for the healthcare and health insurance industries, impose taxes and fees on the healthcare industry and impose additional health policy reforms. Among the provisions of the ACA of importance to our business are:

Since its enactment, there have been executive, judicial and Congressional challenges to certain aspects of the ACA. As a result, there have been delays in the implementation of, and action taken to repeal or replace, certain aspects of the ACA. For example, President Trump signed several Executive Orders and other directives designed to delay the implementation of certain provisions of the ACA. Concurrently, Congress considered legislation to repeal or repeal and replace all or part of the ACA. While Congress has not passed comprehensive repeal legislation, it has enacted laws that modify certain provisions of the ACA such as removing penalties, effective January 1, 2019, for not complying with the ACA’s individual mandate to carry health insurance and delaying the implementation of certain ACA-mandated fees. In addition, on December 14, 2018, a Texas U.S. District Court Judge ruled that the ACA is unconstitutional in its entirety because the “individual mandate” was repealed by Congress as part of the Tax Cuts and Jobs Act of 2017. Additionally, on December 18, 2019, the U.S. Court of Appeals for the 5th Circuit upheld the District Court ruling that the individual mandate was unconstitutional and remanded the case back to the District Court to determine whether the remaining provisions of the ACA are invalid as well. The United States Supreme Court is currently reviewing this case. The United States Supreme Court heard oral argument in this case on November 10, 2020, and is expected to issue a decision sometime this year. Although the Supreme Court has not yet ruled on the constitutionality of the ACA, on January 28, 2021, President Biden issued an executive order to initiate a special enrollment period from February 15, 2021 through May 15, 2021 for purposes of obtaining health insurance coverage through the ACA marketplace. The executive order also instructs certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the ACA. It is unclear how the Supreme Court ruling, other such litigation and the healthcare reform measures of the Biden administration will impact the ACA and our business.

April 2013 and, due to subsequent legislative amendments to the statute, will remain in effect through 2030, with the exception of a temporary suspension from May 1, 2020 through March 31, 2021 due to the COVID-19 pandemic, unless additional Congressional action is taken. In January 2013, the American Taxpayer Relief Act of 2012, among other things, further reduced Medicare payments to certain providers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years.

There also has been heightened governmental scrutiny in the United States of pharmaceutical pricing practices in light of the rising cost of prescription drugs and biologics. Such scrutiny has resulted in several recent congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to product pricing, review the relationship between pricing and manufacturer patient programs, and reform government program reimbursement methodologies for products. At the federal level, the Trump administration used several means to propose or implement drug pricing reform, including through federal budget proposals, executive orders and policy initiatives.

For example, on July 24, 2020 and September 13, 2020, the Trump administration announced several executive orders related to prescription drug pricing that seek to implement several of the administration’s proposals. As a result, the FDA released a final rule on September 24, 2020, effective November 30, 2020, providing guidance for states to build and submit importation plans for drugs from Canada. Further, on November 20, 2020, HHS finalized a regulation removing safe harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under Part D, either directly or through pharmacy benefit managers, unless the price reduction is required by law. The implementation of the rule has been delayed by the Biden administration from January 1, 2022 to January 1, 2023 in response to ongoing litigation. The rule also creates a new safe harbor for price reductions reflected at the point-of-sale, as well as a safe harbor for certain fixed fee arrangements between pharmacy benefit managers and manufacturers, the implementation of which have also been delayed pending review by the Biden administration until March 22, 2021. On November 20, 2020, CMS issued an interim final rule implementing President Trump’s Most Favored Nation executive order, which would tie Medicare Part B payments for certain physician-administered drugs to the lowest price paid in other economically advanced countries, effective January 1, 2021. On December 28, 2020, the United States District Court in Northern California issued a nationwide preliminary injunction against implementation of the interim final rule. It is unclear whether the Biden administration will work to reverse these measures or pursue similar policy initiatives. At the state level, individual states in the United States have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing.

We expect that these initiatives, as well as other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and lower reimbursement, and in additional downward pressure on the price that we receive for any approved product. It is also possible that additional governmental action is taken in response to the COVID-19 pandemic. Any reduction in reimbursement from Medicare or other government-funded programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue, attain profitability or commercialize our product candidates.

In addition to the foregoing, state and federal laws regarding environmental protection and hazardous substances, including the Occupational Safety and Health Act, the Resource Conservation and Recovery Act and the Toxic Substances Control Act, affect our business. These and other laws govern the use, handling and disposal of various biologic, chemical and radioactive substances used in, and wastes generated by, operations. If our operations result in contamination of the environment or expose individuals to hazardous substances, we could be liable for damages and governmental fines. Equivalent laws have been adopted in other countries that impose similar obligations.

The U.S. Foreign Corrupt Practices Act, or FCPA, prohibits U.S. corporations and individuals from engaging in certain activities to obtain or retain business abroad or to influence a person working in an official capacity. It is illegal to pay, offer to pay or authorize the payment of anything of value, directly or indirectly, to any foreign government official, government staff member, official or employee of a public international organization, or a political party or political candidate in an attempt to obtain or retain business or to otherwise influence a person working in an official capacity. The scope of the FCPA includes interactions with healthcare professionals of foreign state-owned or affiliated hospitals, universities, or research institutions. Equivalent laws have been adopted in other foreign countries that impose similar obligations.

As of December 31, 2021, we had 82 full-time employees, including 28 who hold Ph.D. or M.D. degrees. Of these 82 employees, 48 employees were engaged in research and development. None of our employees is subject to a collective bargaining agreement or represented by a trade or labor union. We consider our relationship with our employees to be good.

Our human capital resources objectives include, as applicable, identifying, recruiting, retaining, incentivizing and integrating our existing and new employees, advisors and consultants. The principal purposes of our equity incentive plans are to attract, retain and reward personnel through the granting of stock-based compensation awards in order to increase stockholder value and the success of our company by motivating such individuals to perform to the best of their abilities and achieve our objectives.

We were originally incorporated under the laws of the State of Delaware under the name Oncorus, Inc. in April 2015. Our principal executive office is located at 50 Hampshire Street, Suite 401, Cambridge, Massachusetts 02139. Our telephone number is (857) 320-6400. We completed our initial public offering in October 2020 and our common stock is listed on the Nasdaq Global Market under the symbol “ONCR.”

We are subject to the informational requirements of the Securities Exchange Act of 1934, as amended, or the Exchange Act, and, accordingly, file Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, with the Securities and Exchange Commission, or the SEC. In addition, the SEC maintains a web site (http://www.sec.gov) that contains material regarding issuers that file electronically, such as ourselves, with the SEC.

We maintain a website at www.oncorus.com, to which we regularly post copies of our press releases as well as additional information about us. Our filings with the SEC will be available free of charge through the website as soon as reasonably practicable after being electronically filed with or furnished to the SEC. Information contained in our website is not a part of, nor incorporated by reference into, this Annual Report on Form 10-K or our other filings with the SEC, and should not be relied upon.

Investing in our common stock involves a high degree of risk. Investors should carefully consider the risks and uncertainties described below, as well as the information in the section of this Annual Report on Form 10-K entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and in our consolidated financial statements and related notes appearing elsewhere in this report, before investing in our common stock. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that affect us. If any of the following risks occur, our business, financial condition, operating results and prospects could be materially harmed. In that event, the price of our common stock could decline, and investors could lose part or all of their investment.

We have a limited operating history. We have incurred significant losses since our inception and anticipate that we will incur significant and increasing losses for the foreseeable future and we may never achieve or maintain profitability.

We have a limited operating history, and we are early in our development efforts. Since our inception in April 2015, we have incurred significant operating losses. Our net loss was $64.8 million and $48.3 million for the years ended December 31, 2021 and 2020, respectively. As of December 31, 2021, we had an accumulated deficit of $194.6 million. Since inception, we have devoted substantially all of our financial resources and efforts to organizing and staffing our company, business planning, raising capital, acquiring and developing our technology, establishing our intellectual property portfolio, identifying potential product candidates and undertaking preclinical studies, commencing a clinical trial and manufacturing scale-up activities. We are still in the early stages of development of our product candidates, and we have not completed development of any products. We expect to continue to incur significant and increasing operating losses for the foreseeable future. We expect that it will be several years, if ever, before we have a commercialized product. The net losses we incur may fluctuate significantly from quarter to quarter and year to year. We anticipate that our expenses will increase substantially if, and as, we:

To become and remain profitable, we must succeed in developing and eventually commercializing products that generate significant revenue. This will require us to be successful in a range of challenging activities, including completing preclinical testing and clinical trials, obtaining regulatory approval for product candidates and manufacturing, marketing and selling products for which we may obtain marketing approval and satisfying any post-marketing requirements. We are only in the preliminary stages of most of these activities. We may never succeed in these activities and, even if we do, may never generate revenue that is significant enough to achieve profitability.

Even if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our failure to become and remain profitable would depress the value of our company and could impair our ability to raise capital, expand our business, maintain our research and development efforts or even continue our operations.

We will require substantial additional financing to advance the development of our product candidates, which may not be available on acceptable terms, or at all. Failure to obtain this necessary capital could force us to delay, limit, reduce or terminate our product development programs, potential commercialization efforts or other operations.

The development of biopharmaceutical product candidates is capital-intensive. Our operations have consumed substantial amounts of cash since inception. As of December 31, 2021, our cash and cash equivalents and investments were $123.9 million. In October 2020, we completed an initial public offering of our common stock, or IPO, which provided net proceeds of $88.3 million. In February 2021,

we completed a follow-on public offering of our common stock, or the Follow-on Offering, which provided net proceeds of $53.0 million. We expect to continue to spend substantial amounts to continue the preclinical and clinical development of our current and future programs. If we are able to gain marketing approval of any product candidate that we develop, including ONCR-177, we will require significant additional amounts of cash in order to launch and commercialize such product either alone or in collaboration with others. Because the design and outcome of our ongoing, anticipated and any future clinical trials is highly uncertain, we cannot reasonably estimate the actual amounts necessary to successfully complete the development and commercialization of any product candidate we develop.

We do not have any committed external source of funds or other support for our development efforts. Until we can generate sufficient product revenue to finance our cash requirements, which we may never do, we expect to finance our future cash needs through a combination of public or private equity offerings and debt financings, or other sources such as potential collaborations, strategic alliances, licensing arrangements and other arrangements. Based on our current research and development plans, our cash and cash equivalents and investments at December 31, 2021, will enable us to fund our planned operating expenses and capital expenditure requirements into late 2023. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we expect. In addition, because the design and outcome of our clinical trials is highly uncertain, we cannot reasonably estimate the actual amounts necessary to successfully complete the development and commercialization of ONCR-177, ONCR-021, ONCR-788, ONCR-GBM or any future product candidates.

Our existing cash and cash equivalents and investments will not be sufficient to complete development of ONCR-177, ONCR-021, ONCR-788, ONCR-GBM or any other product candidate. Accordingly, we will be required to obtain further funding to achieve our business objectives and to meet our stated milestones with respect to our current product candidates. Adequate additional funding may not be available to us on acceptable terms, or at all. Our ability to raise additional capital may be adversely impacted by worsening global economic conditions and the recent disruptions to and volatility in the credit and financial markets in the United States and worldwide resulting from the ongoing COVID-19 pandemic and other macroeconomic factors outside of our control. If we are unable to raise additional funding in sufficient amounts or on terms acceptable to us, we may have to significantly delay, scale back or discontinue our research and development initiatives. We could also be required to seek collaborators for our product candidates at an earlier stage than otherwise would be desirable or on terms that are less favorable than might otherwise be available or relinquish or license on unfavorable terms our rights to our product candidates in markets where we otherwise would seek to pursue development or commercialization ourselves. Any of these events could significantly harm our business, prospects, financial condition and results of operations and cause the price of our common stock to decline.

We have never generated any revenue from product sales and may never become profitable.

Our ability to generate revenue from product sales and achieve profitability depends on our ability, alone or with future partners, to successfully complete the development of, and obtain the regulatory approvals necessary to commercialize, our development programs. We have no products approved for commercial sale, have not generated any revenue from product sales, and do not anticipate generating any revenue from product sales until after we have received marketing approval for the commercial sale of a product candidate, if ever. Our ability to generate revenue and achieve profitability depends heavily on our success in achieving a number of goals, including:

Even if ONCR-177 or any future product candidates that we develop are approved for commercial sale, we anticipate incurring significant costs associated with commercializing any such product candidate that we commercialize on our own or in collaboration with others. Our expenses could increase beyond expectations if we are required by the U.S. Food and Drug Administration, or FDA, or comparable foreign regulatory authorities, to change our manufacturing processes or assays, or to perform clinical, nonclinical, or other types of studies in addition to those that we currently anticipate.

If we are successful in obtaining regulatory approvals to market ONCR-177 or any future product candidates, our revenue will be dependent, in part, upon the size of the markets in the territories in which we gain marketing approval, the accepted price for the product, the ability to get reimbursement at any price, and whether we own the commercial rights for that territory. If the number of our addressable patients is not as significant as we estimate, the indications approved by regulatory authorities are narrower than we expect, the labels for our product candidates contain significant safety warnings, regulatory authorities impose burdensome or restrictive distribution requirements, or the reasonably accepted patient populations for treatment are narrowed by competition, physician choice or treatment guidelines, we may not generate significant revenue from sales of such products, even if approved. If we are not able to generate revenue from the sale of any approved products, we could be prevented from or significantly delayed in achieving profitability.

Raising additional capital through securities issuances or other transactions may cause dilution to our stockholders and restrict our operations or require us to relinquish rights to our technologies or product candidates.

If we raise additional capital through the sale of equity or convertible debt securities or through other strategic transactions, the ownership interests of our existing common stockholders may be diluted, our fixed payment obligations may increase, any such securities may have rights senior to those of our common stock, and the terms may include liquidation or other preferences and anti-dilution protections that adversely affect the rights of our existing common stockholders. Future issuances of our common stock or other equity securities, or the perception that such sales may occur, could adversely affect the prevailing market price of our common stock and impair our ability to raise capital through future offerings of equity or equity-linked securities. For example, in October 2020, we issued an aggregate of 6,557,191 shares of common stock in our IPO, and in February 2021, we issued 3,000,000 shares of common stock in our Follow-On Offering. Additionally, in November 2021, we filed a registration statement on Form S-3, or the Registration Statement, with the Securities and Exchange Commission, or SEC, pursuant to which we may offer up to $200 million in common stock, preferred stock, debt securities and warrants to the public. Any future debt financings we undertake, if available, are

likely to involve restrictive covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through licensing or collaboration arrangements with third parties or through other strategic transactions, we may have to relinquish valuable rights to our product candidates, or grant licenses on terms that are not favorable to us. We also could be required to seek collaborators for product candidates at an earlier stage than otherwise would be desirable or relinquish our rights to product candidates or technologies that we otherwise would seek to develop or commercialize ourselves.

Failure to obtain capital when needed on acceptable terms may force us to delay, limit or terminate our product development and commercialization of our current or future product candidates, which could have a material and adverse effect on our business, financial condition, results of operations and prospects. Securing additional financing could also require a substantial amount of time from our management and may divert a disproportionate amount of their attention away from daily activities, which may adversely affect our management’s ability to oversee the development of ONCR-177, ONCR-021, ONCR-788, ONCR-GBM or any future product candidates.

Our short operating history may make it difficult to evaluate the success of our business to date and to assess our future viability.

We are an early-stage company. We were founded and commenced operations in 2015. Our operations to date have been limited to organizing and staffing our company, business planning, raising capital, acquiring and developing our technology, establishing our intellectual property portfolio, identifying potential product candidates and undertaking preclinical studies, commencing a clinical trial and manufacturing scale-up activities. All of our research programs are still in preclinical or early-stage clinical development, and their risk of failure is high. We have not yet demonstrated an ability to initiate or successfully complete any clinical trials, including large-scale, pivotal clinical trials, obtain marketing approvals, manufacture a commercial-scale therapy, or arrange for a third party to do so on our behalf, or conduct sales and marketing activities necessary for successful commercialization. Typically, it takes about 10 to 15 years to develop a new therapy from the time it is discovered to when it is available for treating patients. Consequently, any predictions about our future success or viability may not be as accurate as they could be if we had a longer operating history. In addition, as a new business, we may encounter unforeseen expenses, difficulties, complications, delays, and other known and unknown factors. We will need to transition from a company primarily focused on research and in the early stages of a clinical trial to a company capable of supporting clinical activities on a larger scale and commercial activities. We may not be successful in such a transition.

Our product candidates are in the early stages of development, are not approved for commercial sale and might never receive regulatory approval or become commercially viable.

We are very early in our development efforts and all of our product candidates are in research, preclinical or early-stage clinical development. We have not completed the development of any product candidates. We currently generate no revenue from sales of our products and we may never be able to develop a marketable product. In June 2020, we commenced clinical development of our lead product candidate, ONCR-177, our first product to enter into the clinic. Additionally, we have a portfolio of programs, including ONCR-GBM, another program from our HSV Platform, which is currently in preclinical development, and our two programs from our selectively self-amplifying vRNA Immunotherapy Platform, ONCR-021 and ONCR-788, which are based on coxsackievirus A21, or CVA21, and Seneca Valley Virus, or SVV, respectively. These additional programs may never advance to clinical-stage development. Our ability to generate product revenues, which we do not expect will occur for several years, if ever, will depend on obtaining regulatory approvals for, and successfully commercializing our product candidates, either alone or in collaboration with others, and we cannot guarantee that we will ever obtain regulatory approval for any of our product candidates. Before obtaining regulatory approval for the commercial distribution of our product candidates, we, or a future collaborator, must conduct extensive preclinical tests and clinical trials to demonstrate the safety and efficacy in humans of our product candidates.

The success of our current and future product candidates will depend on several factors, including the following:

If we do not achieve one or more of these factors in a timely manner or at all, we could experience significant delays or an inability to successfully commercialize our drug candidates, which would materially harm our business.

We currently have only one product candidate, ONCR-177, in clinical development. A failure of ONCR-177 in clinical development or its inability to demonstrate sufficient efficacy to warrant further clinical development relative to other drug candidates in the market would adversely affect our business and may require us to discontinue development of other product candidates based on the same therapeutic approach.

We have invested a significant portion of our efforts and financial resources in the programs from our HSV Platform and our selectively self-amplifying vRNA Immunotherapy Platform, particularly in the development of our lead product candidate, ONCR-177. We commenced our Phase 1 clinical trial of ONCR-177 in June 2020, and released preliminary data from Part 1 of the trial in November 2021.

To date we have only submitted one IND with respect to one product candidate, ONCR-177, and we have not yet submitted a Biologics License Application, or BLA, to the FDA, or similar regulatory approval filings to comparable foreign authorities, for any product candidate, and we cannot be certain that our product candidates will be successful in clinical trials or receive regulatory approval to warrant such future submissions. Further, our product candidates may not receive regulatory approval even if they are successful in clinical trials.

Since ONCR-177 is based on our HSV Platform, if ONCR-177 fails in development as a result of any underlying problem with our HSV Platform, then we may be required to discontinue development of all product candidates that are based on this therapeutic approach, such as ONCR-GBM or other product candidates that we nominate from the HSV Platform. The same risk applies to products developed from our vRNA Immunotherapy Platform. If we were required to, or if we chose to, discontinue development of ONCR-177 or any other future product candidates, or if any of them were to fail to receive regulatory approval or achieve sufficient market acceptance, we could be prevented from or significantly delayed in achieving profitability. We can provide no assurance that we would be successful at developing other product candidates based on alternative therapeutic approaches outside of our HSV Platform and vRNA Immunotherapy Platform.

Our product candidates are based on a novel approach to the treatment of cancer, which makes it difficult to predict the time and cost of product candidate development.

We have concentrated all of our research and development efforts on product candidates based on our HSV Platform and our selectively self-amplifying vRNA Immunotherapy Platform, each of which is novel. Our vRNA Immunotherapy Platform has not yet produced a product candidate that has been tested in clinical trials and we only recently commenced dosing patients in the combination portion of our ongoing Phase 1 clinical trial of ONCR-177. Our future success depends on the successful development of these two platforms. There can be no assurance that any development problems we experience in the future will not cause significant delays or unanticipated costs, or that such development problems can be resolved. Should we encounter challenges in the course of drug development, including unfavorable preclinical or clinical trial results, the FDA or foreign regulatory authorities may refuse to approve our product candidates, or may require additional information, tests or trials, which could significantly delay product development and significantly increase our development costs. Moreover, even if we are able to provide the requested information or trials to the FDA, there would be no guarantee that the FDA would accept them or approve our product candidates. We may also experience delays in developing a sustainable, reproducible and scalable manufacturing process, or developing or qualifying and validating product release assays, other testing and manufacturing methods, and our equipment and facilities in a timely manner, which may prevent us from completing our clinical trials or commercializing our product candidates on a timely or profitable basis, if at all.

In addition, the clinical trial requirements of the FDA and comparable foreign regulatory authorities and the criteria these regulators use to determine the safety and efficacy of a product candidate vary substantially according to the type, complexity, novelty and intended use and market of the potential products. The FDA and comparable foreign regulatory authorities have limited experience with the approval of viral immunotherapies. There are only four viral immunotherapies approved globally, H101, Rigvir, teserpaturev, or Delytact, and talimogene laherparepvec, or T-VEC, and only T-VEC has received FDA approval to date. Any viral

immunotherapies that are approved may be subject to extensive post-approval regulatory requirements, including requirements pertaining to manufacturing, distribution and promotion. We may need to devote significant time and resources to compliance with these requirements.

Preclinical and clinical development involve a lengthy and expensive process with uncertain outcomes, and delays can occur for a variety of reasons outside of our control.

In order to obtain FDA approval to market a new biological product, we must demonstrate proof of safety, purity and potency and efficacy in humans. To meet these requirements, we will have to conduct adequate and well-controlled clinical trials. Before we can commence clinical trials for a product candidate, we must complete extensive preclinical testing and studies that support our planned INDs in the United States. We cannot be certain of the timely completion or outcome of our preclinical testing and studies or clinical trials and cannot predict if the FDA will accept our proposed clinical programs or if the outcome of our preclinical testing and studies or clinical trials will ultimately support the further development of our programs. As a result, we cannot be sure that we will be able to submit INDs or similar applications for ONCR-021, ONCR-788 or ONCR-GBM on the timelines we expect, if at all; we cannot be sure that submission of INDs or similar applications will result in the FDA or other regulatory authorities allowing clinical trials to begin; and we cannot be sure that our planned clinical trials will begin on time or that our ongoing clinical trials will be completed on schedule.

Conducting preclinical testing and clinical development is a lengthy, time-consuming and expensive process. The length of time may vary substantially according to the type, complexity and novelty of the program, and often can be several years or more per program. Delays associated with programs for which we are directly conducting preclinical testing and studies may cause us to incur additional operating expenses. Moreover, we may be affected by delays associated with the preclinical testing and studies of certain programs that are the responsibility of any potential future partners over which we have no control. The commencement and rate of completion of preclinical studies and clinical trials for a product candidate may be delayed by many factors, including, for example:

We may experience delays in initiating or completing clinical trials. We also may experience numerous unforeseen events during, or as a result of, any ongoing or future clinical trials that we could conduct that could delay or prevent our ability to receive marketing approval for or commercialize any current or future product candidates, including:

Our product development costs will also increase if we experience delays in clinical testing or marketing approvals, and we may not have sufficient funding to complete the testing and approval process for any of our current or future product candidates. We may be required to obtain additional funds to complete clinical trials and prepare for possible commercialization of our product candidates. We do not know whether any preclinical tests or clinical trials beyond what we currently have planned will be required, will begin as planned, will need to be restructured, or will be completed on schedule or at all. Significant delays relating to any preclinical studies or clinical trials also could shorten any periods during which we may have the exclusive right to commercialize our product candidates or

allow our competitors to bring products to market before we do and impair our ability to successfully commercialize our product candidates and may harm our business and results of operations. In addition, many of the factors that cause, or lead to, delays in clinical trials may ultimately lead to the denial of marketing approval of any of our product candidates. Any delays in our clinical development programs may harm our business, financial condition and results of operations significantly.

If we experience delays or difficulties in the enrollment of patients in clinical trials, our receipt of necessary regulatory approvals could be delayed or prevented.

We may not be able to initiate or continue clinical trials for our product candidates if we are unable to locate and enroll a sufficient number of eligible patients to participate in these trials as required by the FDA or foreign regulatory authorities. In addition, some of our competitors may have ongoing clinical trials for drug candidates that treat the same indications as our drug candidates, and patients who would otherwise be eligible for our clinical trials may instead enroll in clinical trials of our competitors’ product candidates.

Our inability to enroll a sufficient number of patients for our anticipated and any future clinical trials would result in significant delays or may require us to abandon one or more clinical trials altogether. Enrollment delays in our clinical trials may result in increased development costs for our product candidates, which could have an adverse effect on our business, financial condition, results of operations, and prospects. In addition, disruptions caused by the COVID-19 pandemic may increase the likelihood that we encounter patient enrollment difficulties.

Results of preclinical studies and early clinical trials may not be predictive of results of future clinical trials.

We commenced our Phase 1 clinical trial for our lead product candidate, ONCR-177, in June 2020, and released preliminary data from the monotherapy portion of the trial in November 2021. Other product candidates generated from HSV Platform, including ONCR-GBM, and those generated from our vRNA Immunotherapy Platform, including ONCR-021 and ONCR-788, are currently in preclinical development. We will be required to conduct additional clinical trials of ONCR-177 before we can submit a marketing application to the applicable regulatory authorities. ONCR-177 may not perform as we expect in clinical trials, including in the combination portion of the ongoing Phase 1 trial, may ultimately have a different or no impact on tumors, may have a different mechanism of action than we expect and, despite our preliminary results, may not ultimately prove to be safe and effective. The same risks apply to ONCR-021, ONCR-788 and ONCR-GBM, if and when they enter the clinic.

The results of early clinical trials of ONCR-177 and results of preclinical studies or early clinical trials for ONCR-021, ONCR-788 and ONCR-GBM, or any other product candidate we develop, may not be predictive of the results of later-stage clinical trials. Many companies in the pharmaceutical and biotechnology industries have suffered significant setbacks in late-stage clinical trials after achieving positive results in earlier development, and we could face similar setbacks. The design of a clinical trial can determine whether its results will support approval of a product and flaws in the design of a clinical trial may not become apparent until the clinical trial is well advanced. We have limited experience in designing clinical trials and may be unable to design and execute our clinical trials to support marketing approval for our product candidates. In addition, preclinical and clinical data are often susceptible to varying interpretations and analyses. Many companies that believed their product candidates performed satisfactorily in preclinical studies and early clinical trials have nonetheless failed to obtain marketing approval for the product candidates. Even if we, or future collaborators, believe that the results of clinical trials for our product candidates warrant marketing approval, the FDA or comparable foreign regulatory authorities may disagree and may not grant marketing approval of our product candidates.

In some instances, there can be significant variability in safety or efficacy results between different clinical trials of the same product candidate due to numerous factors, including changes in trial procedures set forth in protocols, differences in the size and type of the patient populations, changes in and adherence to the clinical trial protocols and the rate of dropout among clinical trial participants. Moreover, should there be an issue with the design of any of our clinical trials, our results may be impacted. We may not discover such a flaw until the clinical trial is at an advanced stage.

Interim and preliminary or topline data from our clinical trials that we announce or publish from time to time may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data.

From time to time, we may publish interim topline or preliminary data from our ongoing clinical trials. For example, we announced preliminary data from our ongoing Phase 1 trial of ONCR-0177 in November 2021. We plan to report additional surface lesion monotherapy expansion data and initial surface lesion combination expansion data in the second half 2022.

Interim data from clinical trials that we may complete are subject to the risk that one or more of the clinical outcomes may materially change as patient enrollment continues, as additional patients are dosed in monotherapy and in combination with other therapeutics and more patient data become available. Preliminary or topline data also remain subject to audit and verification procedures that may result in the final data being materially different from the preliminary or topline data previously published. As a result, interim and preliminary data should be viewed with caution until the final data are available. In our case, our preliminary data from the ONCR-177 trial may not be predictive of future readouts in 2022 or thereafter, particularly as patients are scanned and data is analyzed from the combination portion of our trial. Adverse differences between interim or preliminary or topline data and final data could significantly harm our reputation and business prospects.

Serious adverse events, undesirable side effects or other unexpected properties of our current or future product candidates may be identified during development or after approval, which could halt their development or lead to the discontinuation of our clinical development programs, refusal by regulatory authorities to approve our product candidates or, if discovered following marketing approval, revocation of marketing authorizations or limitations on the use of our product candidates thereby limiting the commercial potential of such product candidate.

To date, ONCR-177 is the only product candidate that we have tested in humans. In November 2021, we presented preliminary findings from Part 1 of our Phase 1 clinical trial of ONCR-177, including data from 14 patients in the fully enrolled and completed dose escalation cohorts and five patients enrolled in the dose expansion monotherapy portion of the trial. In the fully enrolled and completed surface lesion dose escalation portion of the trial, ONCR-177 administered to heavily pretreated patients with advanced, injectable solid tumors was well tolerated with no dose-limiting toxicities. No treatment-related adverse events exceeded Grade 2, and the most common Grade 1 and 2 adverse events were fatigue, chills, nausea, and mild, dose-dependent cytokine release syndrome, or CRS. No infectious virions were detected in skin swabs, consistent with our expectations with respect to ONCR-177’s safety profile. These preliminary safety and tolerability data may not be predictive of the data we will receive as the trial progresses.

In addition to our clinical trials, we have tested mONCR-177, a mouse version of ONCR-177, in IND-enabling studies, and the most common treatment-related toxicity we have observed to date is low severity lymphocyte hyperplasia in the spleen. Reversible body weight loss was observed after intravenous and intratumoral injection, particularly following the initial administration at the highest dose level. As we continue our development of ONCR-177 and initiate clinical trials for ONCR-021, ONCR-788 and ONCR-GBM, and any future product candidates we may develop, serious adverse events, undesirable side effects or unexpected characteristics may emerge causing us to abandon these product candidates or limit their development to more narrow uses or subpopulations in which the serious adverse events, undesirable side effects or other characteristics are less prevalent, less severe or more acceptable from a risk-benefit perspective. Even if our product candidates initially show promise in early clinical trials, the side effects of therapies are frequently only detectable after they are tested in large, Phase 3 clinical or pivotal trials or, in some cases, after they are made available to patients on a commercial scale after approval. Sometimes, it can be difficult to determine if the serious adverse or unexpected side effects were caused by the product candidate or another factor, especially in oncology subjects who may suffer from other medical conditions and be taking other medications. If serious adverse or unexpected side effects are identified during development and are determined to be attributed to our product candidates, the FDA or comparable foreign regulatory authorities, or IRBs and other reviewing entities, may also require, or we may voluntarily develop, a Risk Evaluation and Mitigation Strategy, or REMS, or other strategies for managing adverse events during clinical development, which could include restrictions on our enrollment criteria, the use of stopping criteria, adjustments to a study’s design, or the monitoring of safety data by a data monitoring committee, among other strategies. Any requests from the FDA or comparable foreign regulatory authority for additional data or information could also result in substantial delays in the approval of our product candidates.

Drug-related side effects could also affect subject recruitment or the ability of enrolled subjects to complete the trial or result in potential product liability claims. Any of these occurrences may harm our business, financial condition and prospects significantly.

In addition, if one or more of our product candidates receives marketing approval, and we or others later identify undesirable side effects caused by such products, a number of potentially significant negative consequences could result, including:

If any of our product candidates are associated with serious adverse events or undesirable side effects or have properties that are unexpected, we may need to abandon development or limit development of that product candidate to certain uses or subpopulations in which the undesirable side effects or other characteristics are less prevalent, less severe or more acceptable from a risk-benefit perspective. The therapeutic-related side effects could affect patient recruitment or the ability of enrolled patients to complete the trial or result in potential product liability claims. Any of these events could prevent us from achieving or maintaining market acceptance of the particular product candidate, if approved, and could significantly harm our business, results of operations and prospects.

We anticipate that many of our product candidates will be used in combination with third-party drugs, some of which may still be in development, and we have limited or no control over the supply, regulatory status or regulatory approval of such drugs.

In addition to developing our product candidates as monotherapies, we also anticipate developing our product candidates for use in combination with certain immune checkpoint inhibitors. For example, in December 2021 we initiated dosing of patients with ONCR-177 in combination with the anti-PD-1 checkpoint inhibitor pembrolizumab, which is being supplied by Merck, in our ongoing Phase 1 clinical trial pursuant to our clinical trial collaboration and supply agreement entered into in July 2020. In the future, we may enter into additional agreements for the supply of immune checkpoint inhibitors for use in connection with the development of one or more of our product candidates. Our ability to develop and ultimately commercialize our product candidates used in combination with pembrolizumab or any other immune checkpoint inhibitors will depend on our ability to access such drugs on commercially reasonable terms for the clinical trials and their availability for use with the commercialized product, if approved. We cannot be certain that current or potential future commercial relationships will provide us with a steady supply of such drugs on commercially reasonable terms or at all.

Any failure to maintain or enter into new successful commercial relationships, or the expense of purchasing immune checkpoint inhibitors in the market, may delay our development timelines, increase our costs and jeopardize our ability to develop our product candidates as commercially viable therapies. If any of these occur, our business, financial condition, results of operations, stock price and prospects may be materially harmed.

Moreover, the development of product candidates for use in combination with another product or product candidate may present challenges that are not faced for single agent product candidates. For our product candidates that may be used in combination with immune checkpoint inhibitors, the FDA may require us to use more complex clinical trial designs in order to evaluate the contribution of each product and product candidate to any observed effects. It is possible that the results of these trials could show that any positive previous trial results are attributable to the combination therapy and not our product candidates. Moreover, following product approval, the FDA may require that products used in conjunction with each other be cross labeled for combined use. To the extent that we do not have rights to the other product, this may require us to work with a third party to satisfy such a requirement. Moreover, developments related to the other product may impact our clinical trials for the combination as well as our commercial prospects should we receive marketing approval. Such developments may include changes to the other product’s safety or efficacy profile, changes to the availability of the approved product, and changes to the standard of care.

In the event that any future collaborator or supplier of immune checkpoint inhibitors administered in combination with our product candidates does not supply their products on commercially reasonable terms or in a timely fashion, we would need to identify alternatives for accessing these products. This could cause our clinical trials to be delayed and limit the commercial opportunities for our product candidates, in which case our business, financial condition, results of operations, stock price and prospects may be materially harmed.

We may not be successful in our efforts to expand our pipeline of product candidates and develop marketable products.

We expect initially to develop our lead product candidate, ONCR-177. A key part of our strategy, however, is to pursue clinical development of additional product candidates, including product candidates based on our selectively self-amplifying vRNA Immunotherapy Platform and additional product candidates from our HSV Platform. Research programs to identify new product candidates require substantial technical, financial and human resources. Developing, obtaining marketing approval for, and commercializing additional product candidates will require substantial additional funding and will be subject to the risks of failure inherent in medical product development. We cannot provide assurance that we will be able to successfully advance any of these additional product candidates through the development process.

Even if we obtain approval from the FDA or comparable foreign regulatory authorities to market additional product candidates for the treatment of cancer, any such product candidates may not be successfully commercialized, widely accepted in the marketplace, or more effective than other commercially available alternatives. If we are unable to successfully develop and commercialize additional product candidates our commercial opportunity may be limited and our business, financial condition, results of operations, stock price and prospects may be materially harmed.

We may expend our limited resources to pursue a particular product candidate or indication and fail to capitalize on product candidates or indications that may be more profitable or for which there is a greater likelihood of success.

Because we have limited financial and managerial resources, we must prioritize our research programs and will need to focus our product candidates on the potential treatment of certain indications. As a result, we may forego or delay pursuit of opportunities with other product candidates or for other indications that later prove to have greater commercial potential. Our resource allocation decisions may cause us to fail to capitalize on viable commercial products or profitable market opportunities. Our spending on current and future research and development programs and product candidates for specific indications may not yield any commercially viable products. If we do not accurately evaluate the commercial potential or target market for a particular product candidate, we may also relinquish valuable rights to that product candidate through collaboration, licensing or other royalty arrangements in cases in which it would have been more advantageous for us to retain sole development and commercialization rights to such product candidate.

If we do not achieve our product development goals in the time frames we announce and expect, the commercialization of our product candidates may be delayed and as a result our share price may decline.

Drug development is inherently risky and uncertain. We cannot be certain that we will be able to:

The actual timing of our development milestones could vary significantly compared to our estimates, in some cases for reasons beyond our control. If we are unable to achieve our goals within the timeframes we announce, the commercialization of our product candidates may be delayed and, as a result, the stock price of our common stock could fall and investors may lose all of their investment.

Even if we complete the necessary preclinical studies and clinical trials, the marketing approval process is expensive, time-consuming and uncertain and may prevent us or any of our potential future collaboration partners from obtaining approvals for the commercialization of ONCR-177 and any other product candidate we develop.

Any current or future product candidate we may develop and the activities associated with their development and commercialization, including their design, testing, manufacture, safety, efficacy, recordkeeping, labeling, storage, approval, advertising, promotion, sale, and distribution, are subject to comprehensive regulation by the FDA and other regulatory authorities in the United States and by comparable authorities in other countries. Failure to obtain marketing approval for a product candidate will prevent us from commercializing the product candidate in a given jurisdiction. We have not received approval to market any product candidates from regulatory authorities in any jurisdiction and it is possible that none of the product candidates we may seek to develop in the future will ever obtain regulatory approval.

Securing marketing approval requires the submission of extensive preclinical and clinical data and supporting information to regulatory authorities for each therapeutic indication to establish the product candidate’s safety and efficacy for that indication. Securing marketing approval also requires the submission of information about the product manufacturing process to, and inspection of manufacturing facilities and clinical trial sites by, the regulatory authorities. If we do not receive approval from the FDA and comparable foreign regulatory authorities for any of our product candidates, we will not be able to commercialize such product candidates in the United States or in other jurisdictions. If significant delays in obtaining approval for and commercializing our product candidates occur in any jurisdictions, our business, financial condition, results of operations, stock price and prospects will be materially harmed. Even if our product candidates are approved, they may:

The process of obtaining marketing approvals, both in the United States and abroad, is expensive, takes many years even if successful, and can vary substantially based upon a variety of factors, including the type, complexity, and novelty of the product candidates involved. Changes in marketing approval policies during the development period, changes in or the enactment of additional statutes or regulations, or changes in regulatory review for each submitted product application, may cause delays in the approval or rejection of

an application. The FDA and comparable authorities in other countries have substantial discretion in the approval process and may refuse to accept any application or may decide that our data are insufficient for approval and require additional preclinical, clinical or other studies. In addition, varying interpretations of the data obtained from preclinical and clinical testing could delay, limit, or prevent marketing approval of a product candidate. Any marketing approval we ultimately obtain may be limited or subject to restrictions or post-approval commitments that render the approved product not commercially viable.

If we experience delays in obtaining approval or if we fail to obtain approval of any current or future product candidates we may develop, the commercial prospects for those product candidates may be harmed, and our ability to generate revenues will be materially impaired.

Regulatory approval by the FDA or comparable foreign regulatory authorities is limited to those specific indications and conditions for which approval has been granted, and we may be subject to substantial fines, criminal penalties, injunctions, or other enforcement actions if we are determined to be promoting the use of any products for unapproved or “off-label” uses, resulting in damage to our reputation and business.

We must comply with requirements concerning advertising and promotion for any product candidates for which we obtain marketing approval. Promotional communications with respect to therapeutics are subject to a variety of legal and regulatory restrictions and continuing review by the FDA, Department of Justice, Department of Health and Human Services’ Office of Inspector General, state attorneys general, members of Congress, and the public. When the FDA or comparable foreign regulatory authorities issue regulatory approval for a product candidate, the regulatory approval is limited to those specific uses and indications for which a product is approved. If we are not able to obtain FDA approval for desired uses or indications for our product candidates, we may not market or promote them for those indications and uses, referred to as off-label uses, and our business, financial condition, results of operations, stock price and prospects will be materially harmed. We also must sufficiently substantiate any claims that we make for any products we develop, including claims comparing our products to other companies’ products, and must abide by the FDA’s strict requirements regarding the content of promotion and advertising.

Because regulatory authorities in the United States generally do not restrict or regulate the behavior of physicians in their choice of treatment within the practice of medicine, physicians may choose to prescribe products for uses that are not described in the product’s labeling and for uses that differ from those tested in clinical trials and approved by the regulatory authorities. Regulatory authorities do, however, restrict communications by biopharmaceutical companies concerning off-label use. We are prohibited for marking and promoting the products for indications and uses that are not specifically approved by the FDA.

If we are found to have impermissibly promoted any products that we may develop, we may become subject to significant liability and government fines. The FDA and other agencies actively enforce the laws and regulations regarding product promotion, particularly those prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted a product may be subject to significant sanctions. The federal government has levied large civil and criminal fines against companies for alleged improper promotion and has enjoined several companies from engaging in off-label promotion. The FDA has also requested that companies enter into consent decrees or permanent injunctions under which specified promotional conduct is changed or curtailed.

In the United States, engaging in the impermissible promotion of our products, following approval, for off-label uses can also subject us to false claims and other litigation under federal and state statutes. These include fraud and abuse and consumer protection laws, which can lead to civil and criminal penalties and fines, agreements with governmental authorities that materially restrict the manner in which we promote or distribute therapeutic products and conduct our business. These restrictions could include corporate integrity agreements, suspension or exclusion from participation in federal and state healthcare programs, and suspension and debarment from government contracts and refusal of orders under existing government contracts. These False Claims Act lawsuits against manufacturers of drugs and biologics have increased significantly in volume and breadth, leading to several substantial civil and criminal settlements, up to $3.0 billion, pertaining to certain sales practices and promoting off-label uses. In addition, False Claims Act lawsuits may expose manufacturers to follow-on claims by private payers based on fraudulent marketing practices. This growth in litigation has increased the risk that a biopharmaceutical company will have to defend a false claim action, pay settlement fines or restitution, as well as criminal and civil penalties, agree to comply with burdensome reporting and compliance obligations, and be excluded from Medicare, Medicaid, or other federal and state healthcare programs. If we do not lawfully promote our approved products, if any, we may become subject to such litigation and, if we do not successfully defend against such actions, those actions may have a material adverse effect on our business, financial condition, results of operations, stock price and prospects.

In the United States, the promotion of biopharmaceutical products is subject to additional FDA requirements and restrictions on promotional statements. If after one or more of our product candidates obtains marketing approval the FDA determines that our promotional activities violate its regulations and policies pertaining to product promotion, it could request that we modify our promotional materials or subject us to regulatory or other enforcement actions, including issuance of warning letters or untitled letters, suspension or withdrawal of an approved product from the market, requests for recalls, payment of civil fines, disgorgement of money, imposition of operating restrictions, injunctions or criminal prosecution, and other enforcement actions. Similarly, industry codes in foreign jurisdictions may prohibit companies from engaging in certain promotional activities and regulatory agencies in

various countries may enforce violations of such codes with civil penalties. If we become subject to regulatory and enforcement actions our business, financial condition, results of operations, stock price and prospects will be materially harmed.

Obtaining and maintaining marketing approval for our product candidates in one jurisdiction would not mean that we will be successful in obtaining marketing approval of that product candidate in other jurisdictions, which could prevent us from marketing our products internationally.

Obtaining and maintaining marketing approval of our product candidates in one jurisdiction would not guarantee that we will be able to obtain or maintain marketing approval in any other jurisdiction, while a failure or delay in obtaining marketing approval in one jurisdiction may have a negative effect on the marketing approval process in others. For example, even if the FDA grants marketing approval of a product candidate, comparable foreign regulatory authorities must also approve the manufacturing, marketing and promotion of the product candidate in those countries. Approval procedures vary among jurisdictions and can involve requirements and administrative review periods different from, and greater than, those in the United States, including additional preclinical studies or clinical trials, as clinical trials conducted in one jurisdiction may not be accepted by regulatory authorities in other jurisdictions. In many jurisdictions outside the United States, a product candidate must be approved for reimbursement before it can be approved for sale in that jurisdiction. In some cases, the price that we intend to charge for our products is also subject to approval.

Regulatory authorities in jurisdictions outside of the United States have requirements for approval of product candidates with which we must comply prior to marketing in those jurisdictions. Obtaining foreign marketing approvals and compliance with foreign regulatory requirements could result in significant delays, difficulties and costs for us and could delay or prevent the introduction of our products in certain countries. If we fail to comply with the regulatory requirements in international markets and/or receive applicable marketing approvals, our target market will be reduced and our ability to realize the full market potential of our product candidates will be harmed. If we obtain approval for any product candidate and ultimately commercialize that product in foreign markets, we would be subject to additional risks and uncertainties, including the burden of complying with complex and changing foreign regulatory, tax, accounting and legal requirements and the reduced protection of intellectual property rights in some foreign countries.

Even if our product candidates receive regulatory approval, we will be subject to ongoing obligations and continued regulatory review, which may result in significant additional expense and limit how we manufacture and market our products.

Any product candidate for which we obtain marketing approval will be subject to extensive and ongoing requirements of and review by the FDA or comparable foreign regulatory authorities, including requirements related to the manufacturing processes, post-approval clinical data, labeling, packaging, distribution, adverse event reporting, storage, recordkeeping, export, import, advertising, marketing, and promotional activities for such product. These requirements further include submissions of safety and other post-marketing information, including manufacturing deviations and reports, registration and listing requirements, the payment of annual fees, continued compliance with cGMP requirements relating to manufacturing, quality control, quality assurance, and corresponding maintenance of records and documents, and good clinical practices, or GCPs, for any clinical trials that we conduct post-approval.

The FDA and comparable foreign regulatory authorities will continue to closely monitor the safety profile of any product even after approval. If the FDA or comparable foreign regulatory authorities become aware of new safety information after approval of any of our product candidates, they may withdraw approval, issue public safety alerts, require labeling changes or establishment of a REMS or similar strategy, impose significant restrictions on a product’s indicated uses or marketing, or impose ongoing requirements for potentially costly post-approval studies or post-market surveillance. Any such restrictions could limit sales of the product.

We and any of our suppliers or collaborators, including our contract manufacturers, could be subject to periodic unannounced inspections by the FDA to monitor and ensure compliance with cGMPs and other FDA regulatory requirements. Application holders must further notify the FDA, and depending on the nature of the change, obtain FDA pre-approval for product and manufacturing changes.

In addition, later discovery of previously unknown adverse events or that the product is less effective than previously thought or other problems with our products, manufacturers or manufacturing processes, or failure to comply with regulatory requirements both before and after approval, may yield various negative results, including:

Any of these events could prevent us from achieving or maintaining market acceptance of the particular product candidate, if approved, or could substantially increase the costs and expenses of commercializing such product, which in turn could delay or prevent us from generating significant revenues from its marketing and sale. Any of these events could further have other material and adverse effects on our operations and business and could adversely impact our business, financial condition, results of operations, stock price and prospects.

The FDA’s policies or those of comparable foreign regulatory authorities may change and additional government regulations may be enacted that could prevent, limit or delay regulatory approval of our product candidates, limit the marketability of our product candidates, or impose additional regulatory obligations on us. Changes in medical practice and standard of care may also impact the marketability of our product candidates.

If we are slow or unable to adapt to changes in existing requirements, standards of care, or the adoption of new requirements or policies, or if we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained and be subject to regulatory enforcement action.

Should any of the above actions take place, we could be prevented from or significantly delayed in achieving profitability. Further, the cost of compliance with post-approval regulations may have a negative effect on our operations and business and could adversely impact our business, financial condition, results of operations, stock price and prospects.

We are subject to multiple manufacturing risks, any of which could substantially increase our costs, limit supply of our product candidates and result in delays in our clinical trials.

The process of manufacturing viral immunotherapies and their components is complex, time-consuming, highly regulated and subject to several risks, including:

We may also make changes to our manufacturing processes at various points during development, for a number of reasons, such as controlling costs, achieving scale, decreasing processing time, increasing manufacturing success rate or other reasons. Such changes carry the risk that they will not achieve their intended objectives, and any of these changes could cause our product candidates to perform differently and affect the results of our ongoing or future clinical trials. In some circumstances, changes in the manufacturing process may require us to perform ex vivo comparability studies and to collect additional data from patients prior to undertaking more advanced clinical trials. For instance, changes in our process during the course of clinical development may require us to show the comparability of the product used in earlier clinical phases or at earlier portions of a trial to the product used in later clinical phases or later portions of the trial.

Any of these events could substantially increase our costs or lead to delays in our clinical trials.

We are in the process of building out our manufacturing facility, which will be costly and time-consuming and may not ultimately be successful.

In December 2020, we entered into a lease agreement for approximately 88,000 square feet of manufacturing and office space in Andover, Massachusetts to support our advancing pipeline of product candidates and to serve as an alternative to or in addition to our reliance on CMOs. In November 2021, we entered into an amendment to our lease to increase the existing footprint of the facility to a total of approximately 105,000 square feet. We are in the process of renovating and retrofitting this facility, and expect the facility to be operational in late 2022.

Building a complex manufacturing facility is a difficult undertaking, with several risks related to execution and qualification, any of which could result in manufacturing failures and supply shortages. Furthermore, we will need to hire additional highly qualified personnel to manage our operations and develop the necessary infrastructure to continue the development, and eventual commercialization, if approved, of our product candidates. If we do not complete our facility in a timely manner or on our anticipated timeline, if it becomes inoperable, or if we fail to recruit the required personnel and generally manage our growth effectively, the development and production of our product candidates could be curtailed or delayed. Even if we are successful, our manufacturing capabilities could be affected by unforeseen cost overruns, unexpected delays, equipment failures, labor shortages, process failures, natural disasters, power failures and numerous other factors that could prevent us from realizing the intended benefits of our manufacturing strategy and have a material adverse effect on our business.

We also may encounter problems hiring and retaining the experienced technical, quality control, quality assurance and manufacturing personnel needed to operate our manufacturing processes and facilities, which could result in delays in production or difficulties in maintaining compliance with applicable regulatory requirements.

Any problems in our manufacturing process or facilities could make us a less attractive collaborator for potential partners, including larger pharmaceutical companies and academic research institutions, which could limit our access to additional attractive development programs.

We may not be successful in managing our manufacturing facility or satisfying manufacturing-related regulatory requirements.

Operating our own manufacturing facility requires significant resources and management. We cannot be certain that our manufacturing plans will be completed on time, if at all, or if manufacturing of product candidates from our own manufacturing facility for our planned clinical trials will begin or be completed on time, if at all. We may have unacceptable or inconsistent product quality success rates and yields, and we may be unable to maintain adequate quality control, quality assurance, manufacturing, technical or other qualified personnel. In addition, if we switch from our current CMOs to our own manufacturing facility for one or more of our product candidates in the future, we may need to conduct additional preclinical, analytical or clinical trials to bridge our modified product candidates to earlier versions. Failure to successfully complete our buildout and operate our planned manufacturing facility could adversely affect the commercial viability of our product candidates.

In addition, the FDA and other foreign regulatory authorities may require us to submit samples of any lot of any approved product together with the protocols showing the results of applicable tests at any time. Under some circumstances, the FDA or other foreign regulatory authorities may require that we not distribute a product lot until the relevant agency authorizes its release. Slight deviations in the manufacturing process, including those affecting quality attributes and stability, may result in unacceptable changes that could result in lot failures or product recalls. Lot failures or product recalls could cause us to delay product launches or clinical trials, which could be costly to us and otherwise harm our business, financial condition, results of operations and prospects. Problems in our manufacturing processes could restrict our ability to meet market demand for our products.

We currently rely on contract manufacturing organizations, or CMOs, to supply components of and manufacture ONCR-177. The loss of these CMOs or their failure to meet their obligations to us could affect our ability to develop ONCR-177 and our other product candidates in a timely manner.

We rely on a limited number of CMOs and have entered into an agreement with a third-party CMO to manufacture ONCR-177 and supply the Phase 1 clinical trial material, in compliance with applicable regulatory and quality standards. Our proprietary manufacturing process is used by third-party contract manufacturers we direct for production of batches of clinical material for us. Although we expect that our manufacturing facility will be operational in late 2022, we expect to continue to rely on third-party CMOs, from time to time, to implement our proprietary process to manufacture our clinical supply for the foreseeable future. Any replacement of a third-party contract manufacturer could require significant effort and expertise because there may be a limited number of qualified replacements. Any delays in obtaining adequate clinical supply that meets the necessary quality standards may delay our development or commercialization.

Our reliance on third-party providers for certain manufacturing activities reduces our control over these activities but will not relieve us of our responsibility to ensure compliance with all required regulations. Under certain circumstances, these third-party providers may be entitled to terminate their engagements with us. If a third-party provider terminates its engagement with us, or does not successfully carry out its contractual duties, meet expected deadlines or manufacture ONCR-177 or any other product candidates in accordance with regulatory requirements, or if there are disagreements between us and a third-party provider, we may not be able to complete, or may be delayed in completing, the clinical trials required for approval of ONCR-177 or any other product candidate or the preclinical studies required to support our future IND submissions. In such instance, we may need to enter into an appropriate replacement third-party relationship, which may not be readily available or available on acceptable terms, which would cause additional delay or increased expense prior to the approval of ONCR-177 or any future product candidate and would thereby have a negative impact on our business, financial condition, results of operations and prospects.

We may rely on additional third parties to manufacture ingredients of our product candidates in the future and to perform quality testing. Reliance on third-party contract manufacturers and service providers entails risks to which we would not be subject if we manufactured the product candidates ourselves, including:

Any of these events could lead to clinical trial delays or failure to obtain regulatory approval, impact our ability to successfully commercialize any of our product candidates or otherwise harm our business, financial condition, results of operations, stock price and prospects. Some of these events could be the basis for FDA or other regulatory authority action, including injunction, recall, seizure or total or partial suspension of product manufacture.

We rely, and expect to continue to rely, on third parties to conduct, supervise, and monitor our preclinical studies and clinical trials. If those third parties do not perform satisfactorily, including failing to meet deadlines for the completion of such trials or failing to comply with regulatory requirements, we may be unable to obtain regulatory approval for our product candidates or any other product candidates that we may develop in the future.

We rely, and will rely, on third-party CROs, study sites and others to conduct, supervise, and monitor our preclinical studies and clinical trials for our product candidates and do not currently plan to independently conduct preclinical studies or clinical trials of any product candidates. We expect to continue to rely on third parties, such as CROs, clinical data management organizations, medical institutions, and clinical investigators, to conduct our preclinical studies and clinical trials. Although we have agreements governing their activities, we have limited influence over their actual performance and control only certain aspects of their activities. The failure of these third parties to successfully carry out their contractual duties or meet expected deadlines could substantially harm our business because we may be delayed in completing or unable to complete the studies required to support future approval of our product candidates, or we may not obtain marketing approval for or commercialize our product candidates in a timely manner or at all. Moreover, these agreements might terminate for a variety of reasons, including a failure to perform by the third parties. If we need to enter into alternative arrangements our product development activities would be delayed and our business, financial condition, results of operations, stock price and prospects may be materially harmed.

Our reliance on these third parties for development activities will reduce our control over these activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol, legal, regulatory, and scientific standards and our reliance on third parties does not relieve us of our regulatory responsibilities. For example, we will remain responsible for ensuring that each of our trials is conducted in accordance with the general investigational plan and protocols for the trial. We must also ensure that our preclinical trials are conducted in accordance with the FDA’s Good Laboratory Practice, or GLP, regulations, as appropriate. Moreover, the FDA and comparable foreign regulatory authorities require us to comply with standards, commonly referred to as GCPs for conducting, recording, and reporting the results of clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity, and confidentiality of trial participants are protected. Regulatory authorities enforce these requirements through periodic inspections of trial sponsors, clinical investigators, and trial sites. If we or any of our third parties fail to comply with applicable GCPs or other regulatory requirements, we or they may be subject to enforcement or other legal actions, the data generated in our trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities may require us to perform additional studies.

In addition, we will be required to report certain financial interests of our third-party investigators if these relationships exceed certain financial thresholds or meet other criteria. The FDA or comparable foreign regulatory authorities may question the integrity of the data from those clinical trials conducted by investigators who may have conflicts of interest.

We cannot provide assurance that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our trials complies with the applicable regulatory requirements. In addition, our clinical trials must be conducted with product candidates that were produced under cGMP regulations. Failure to comply with these regulations may require us to repeat clinical trials, which would delay the regulatory approval process. We also are required to register certain clinical trials and post the results of certain completed clinical trials on a government-sponsored database, ClinicalTrials.gov, within specified timeframes. Failure to do so can result in enforcement actions and adverse publicity.

The third parties with which we work may also have relationships with other entities, some of which may be our competitors, for whom they may also be conducting trials or other therapeutic development activities that could harm our competitive position. In addition, such third parties are not our employees, and except for remedies available to us under our agreements with such third parties we cannot control whether or not they devote sufficient time and resources to our ongoing clinical, non-clinical, and preclinical programs. If these third parties do not successfully carry out their contractual duties, meet expected deadlines or conduct our preclinical studies or clinical trials in accordance with regulatory requirements or our stated protocols, if they need to be replaced or if the quality or accuracy of the data they obtain is compromised due to the failure to adhere to our protocols, regulatory requirements or for other reasons, our trials may be repeated, extended, delayed, or terminated; we may not be able to obtain, or may be delayed in obtaining, marketing approvals for our product candidates; we may not be able to, or may be delayed in our efforts to, successfully commercialize our product candidates; or we or they may be subject to regulatory enforcement actions. As a result, our results of operations and the commercial prospects for our product candidates would be harmed, our costs could increase and our ability to generate revenues could be delayed. To the extent we are unable to successfully identify and manage the performance of third-party service providers in the future, our business, financial condition, results of operations, stock price and prospects may be materially harmed.

If any of our relationships with these third parties terminate, we may not be able to enter into arrangements with alternative providers or to do so on commercially reasonable terms. Switching or adding additional third parties involves additional cost and requires management time and focus. In addition, there is a natural transition period when a new third party commences work. As a result, delays could occur, which could compromise our ability to meet our desired development timelines.

We will also rely on other third parties to store and distribute our product candidates for the clinical trials that we conduct. Any performance failure on the part of our distributors could delay clinical development, marketing approval, or commercialization of our product candidates, which could result in additional losses and deprive us of potential product revenue.

If the third-party manufacturers upon which we rely fail to produce any product candidates in the volumes that we require on a timely basis, or fail to comply with stringent regulations applicable to biopharmaceutical manufacturers, we may face delays in the development and commercialization of, or be unable to meet demand for, any product candidates, and may lose potential revenues.

For the near future, at least until our manufacturing facility is operational, and from time to time thereafter, we will continue to rely on third-party contract manufacturers to manufacture our clinical trial product supplies. There can be no assurance that our clinical product supply will not be limited, interrupted, or of satisfactory quality or continue to be available at acceptable prices. In particular, any replacement of a contract manufacturer could require significant effort and expertise because there may be a limited number of qualified replacements. Any delays in obtaining adequate supplies of our product candidates that meet the necessary quality standards may delay our development or commercialization.

We may not succeed in our efforts to establish the necessary manufacturing relationships or other alternative arrangements for any of our product candidates or programs. Any product candidates we develop compete with other products and product candidates for access to manufacturing facilities and capable personnel to operate those facilities. There are a limited number of manufacturers that operate under cGMP regulations that are both capable of manufacturing and filling our viral product for us and willing to do so. If our existing third-party CMOs, or the third-party providers, that we engage in the future should cease to work with us, we likely would experience delays in obtaining sufficient quantities of any product candidates for us to advance our clinical studies and trials while we identify and qualify replacement suppliers. If for any reason we are unable to obtain adequate supplies of any product candidates we develop or the substances used to manufacture them, it will be more difficult for us to develop product candidates and compete effectively. Further, even if we do establish such collaborations or arrangements, our third-party manufacturers may breach, terminate, or not renew these agreements.

Any problems or delays we experience in preparing for commercial-scale manufacturing of a product candidate or component may result in a delay in product development timelines and FDA or comparable foreign regulatory authority approval of the product candidate or may impair our ability to manufacture commercial quantities or such quantities at an acceptable cost and quality, which could result in the delay, prevention, or impairment of clinical development and commercialization of any product candidates and may materially harm our business, financial condition, results of operations, stock price and prospects.

We currently have only one contract manufacturer for ONCR-177 for use in our clinical trials. In addition, we do not have any long-term commitments from our suppliers of clinical trial material or guaranteed prices for our product candidates or their components. The manufacture of biopharmaceutical products requires significant expertise and capital investment, including the development of advanced manufacturing techniques and process controls. Manufacturers of therapeutics often encounter difficulties in production, particularly in scaling up initial production. These problems include difficulties with production costs and yields, quality control, including stability of the product candidate and quality assurance testing, shortages of qualified personnel or key raw materials, and compliance with strictly enforced federal, state, and foreign regulations. Our current and future contract manufacturers may not perform as agreed. If our manufacturers were to encounter these or other difficulties, our ability to provide product candidates to patients in our clinical trials could be jeopardized.

Contract manufacturers of our product candidates may be unable to comply with our specifications, applicable cGMP requirements or other FDA, state or foreign regulatory requirements. Poor control of production processes can lead to the introduction of adventitious agents or other contaminants, or to inadvertent changes in the properties or stability of a product candidate that may not be detectable in final product testing. If our contract manufacturers cannot successfully manufacture material that conforms to our specifications and the strict regulatory requirements of the FDA or other regulatory authorities, they will not be able to secure or maintain regulatory approval for their manufacturing facilities. Any such deviations may also require remedial measures that may be costly and/or time-consuming for us or a third party to implement and that may include the temporary or permanent suspension of a clinical trial or the temporary or permanent closure of a facility. Any such remedial measures imposed upon us or third parties with whom we contract could materially harm our business. Any delays in obtaining products or product candidates that comply with the applicable regulatory requirements may result in delays to clinical trials, product approvals, and commercialization. It may also require that we conduct additional studies.

While we are ultimately responsible for the manufacturing of our product candidates and therapeutic substances, other than through our contractual arrangements, we have little control over our manufacturers’ compliance with these regulations and standards. If the FDA or a comparable foreign regulatory authority does not approve these facilities for the manufacture of our product candidates or if it withdraws any such approval in the future, we may need to find alternative manufacturing facilities, which would significantly impact our ability to develop, obtain regulatory approval for or market our product candidates, if approved. Any new manufacturers would need to either obtain or develop the necessary manufacturing know-how, and obtain the necessary equipment and materials, which may take substantial time and investment. We must also receive FDA approval for the use of any new manufacturers for commercial supply.

A failure to comply with the applicable regulatory requirements, including periodic regulatory inspections, may result in regulatory enforcement actions against our manufacturers or us (including fines and civil and criminal penalties, including imprisonment) suspension or restrictions of production, injunctions, delay or denial of product approval or supplements to approved products, clinical holds or termination of clinical trials, warning or untitled letters, regulatory authority communications warning the public about safety issues with the product candidate, refusal to permit the import or export of the products, product seizure, detention, or recall, operating restrictions, suits under the civil False Claims Act, corporate integrity agreements, consent decrees, withdrawal of product approval, environmental or safety incidents and other liabilities. If the safety of any quantities supplied is compromised due to our manufacturers’ failure to adhere to applicable laws or for other reasons, we may not be able to obtain regulatory approval for or successfully commercialize our product candidates.

Any failure or refusal to supply our product candidates or components for our product candidates that we may develop could delay, prevent or impair our clinical development or commercialization efforts. Any change in our manufacturers could be costly because the commercial terms of any new arrangement could be less favorable and because the expenses relating to the transfer of necessary technology and processes could be significant.

We may in the future seek to establish collaborations, and, if we are not able to establish them on commercially reasonable terms, we may have to alter our development and commercialization plans.

We may in the future seek collaboration arrangements with other parties for the development or commercialization of our product candidates. The success of any collaboration arrangements may depend on the efforts and activities of our collaborators. Collaborators generally have significant discretion in determining the efforts and resources that they will apply to these arrangements. Disagreements between parties to a collaboration arrangement regarding clinical development and commercialization matters can lead to delays in the development process or commercializing the applicable product candidate and, in some cases, termination of the collaboration arrangement. These disagreements can be difficult to resolve if neither of the parties has final decision making authority.

Collaborations with biopharmaceutical companies and other third parties often are terminated or allowed to expire by the other party. Any such termination or expiration could adversely affect us financially and could harm our business reputation.

Any future collaborations we might enter into may pose a number of risks, including the following:

In addition, if we establish one or more collaborations, all of the risks relating to product development, regulatory approval and commercialization described in this report would also apply to the activities of any such future collaborators.

If any collaborations we might enter into in the future do not result in the successful development and commercialization of products or if one of our future collaborators subsequently terminates its agreement with us, we may not receive any future research funding or milestone or royalty payments under such potential future collaboration. If we do not receive the funding we expect under the agreements, our development of our product candidates could be delayed and we may need additional resources to develop our product candidates and our product platform.

Additionally, if any future collaborator of ours is involved in a business combination, the collaborator might deemphasize or terminate development or commercialization of any product candidate licensed to it by us. If one of our future collaborators terminates its agreement with us, we may find it more difficult to attract new collaborators and our reputation in the business and financial communities could be adversely affected.

We face significant competition in seeking appropriate collaborators. Our ability to reach a definitive agreement for any collaboration will depend, among other things, upon our assessment of the collaborator’s resources and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator’s evaluation of a number of factors.

If we are unable to reach agreements with suitable collaborators on a timely basis, on acceptable terms, or at all, we may have to curtail the development of a product candidate, reduce or delay its development program or one or more of our other development programs, delay its potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to fund and undertake development or commercialization activities on our own, we may need to obtain additional expertise and additional capital, which may not be available to us on acceptable terms, or at all. If we fail to enter into collaborations and do not have sufficient funds or expertise to undertake the necessary development and commercialization activities, we may not be able to further develop our product candidates or bring them to market or continue to develop our product platform and our business may be materially and adversely affected.

If we are unable to successfully commercialize any product candidate for which we receive regulatory approval, or experience significant delays in doing so, our business will be materially harmed.

If we are successful in obtaining marketing approval from applicable regulatory authorities for ONCR-177 or any other product candidate that we successfully progress through clinical development, our ability to generate revenues from any such products will depend on our success in:

To the extent we are not able to do any of the foregoing, our business, financial condition, results of operations, stock price and prospects will be materially harmed.

We face significant competition from other biopharmaceutical and biotechnology companies, academic institutions, government agencies, and other research organizations, which may result in others discovering, developing or commercializing products more quickly or marketing them more successfully than us. If their product candidates are shown to be safer or more effective than ours, our commercial opportunity may be reduced or eliminated.

The development and commercialization of cancer immunotherapy products is characterized by rapidly advancing technologies, intense competition and a strong emphasis on proprietary rights. We face competition with respect to our current product candidates, and will face competition with respect to any product candidates that we may seek to develop or commercialize in the future, from major biopharmaceutical companies, specialty biopharmaceutical companies, and biotechnology companies worldwide. There are a number of large biopharmaceutical and biotechnology companies that currently market and sell products or are pursuing the development of products for the treatment of solid tumors, including viral immunotherapy and cancer vaccine approaches. Potential competitors also include academic institutions, government agencies, and other public and private research organizations that conduct research, seek patent protection, and establish collaborative arrangements for research, development, manufacturing, and commercialization.

While certain of our product candidates may be used in combination with other drugs with different mechanisms of action, if and when marketed they will still compete with a number of drugs that are currently marketed or in development that also target cancer. To compete effectively with these drugs, our product candidates will need to demonstrate advantages in clinical efficacy and safety compared to these competitors when used alone or in combination with other drugs.

Our commercial opportunities could be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are easier to administer or are less expensive alone or in combination with other therapies than any products that we may develop alone or in combination with other therapies. Our competitors also may obtain FDA or comparable foreign regulatory authorities’ approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market. In addition, our ability to compete may be affected in many cases by third-party payors’ coverage and reimbursement decisions.

Many of the companies with which we are competing or may compete in the future have significantly greater financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals, and marketing approved products than we do. Mergers and acquisitions in the biopharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of our competitors. Early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. These third parties compete with us in recruiting and retaining qualified scientific and management personnel and establishing clinical trial sites and patient registration for clinical trials, as well as in developing or acquiring technologies complementary to, or necessary for, our programs. If we are unable to successfully compete with these companies our business, financial condition, results of operations, stock price and prospects may be materially harmed.

If we are unable to establish effective marketing, sales and distribution capabilities or enter into agreements with third parties to market and sell our product candidates, if they are approved, the revenues that we generate may be limited and we may never become profitable.

We currently do not have a commercial infrastructure for the marketing, sale, and distribution of any products that we may develop. If and when our product candidates receive marketing approval, we intend to commercialize our product candidates on our own or in collaboration with others and potentially with pharmaceutical or biotechnology partners in other geographies. In order to commercialize our products, we must build our marketing, sales, and distribution capabilities or make arrangements with third parties to perform these services. We may not be successful in doing so. Should we decide to move forward in developing our own marketing capabilities, we may incur expenses prior to product launch or even approval in order to recruit a sales force and develop a marketing and sales infrastructure. If a commercial launch is delayed as a result of the FDA or comparable foreign regulatory authority requirements or other reasons, we would incur these expenses prior to being able to realize any revenue from sales of our product candidates. Even if we are able to effectively hire a sales force and develop a marketing and sales infrastructure, our sales force and marketing teams may not be successful in commercializing our product candidates. This may be costly, and our investment would be lost if we cannot retain or reposition our sales and marketing personnel.

We may also or alternatively decide to collaborate with third-party marketing and sales organizations to commercialize any approved product candidates, in which event, our ability to generate product revenues may be limited. To the extent we rely on third parties to commercialize any products for which we obtain regulatory approval, we may receive less revenues than if we commercialized these products ourselves, which could materially harm our prospects. In addition, we would have less control over the sales efforts of any other third parties involved in our commercialization efforts, and could be held liable if they failed to comply with applicable legal or regulatory requirements.

We have no prior experience in the marketing, sale, and distribution of biopharmaceutical products, and there are significant risks involved in building and managing a commercial infrastructure. The establishment and development of commercial capabilities, including compliance plans, to market any products we may develop will be expensive and time consuming and could delay any product launch, and we may not be able to successfully develop this capability. We will have to compete with other biopharmaceutical and biotechnology companies, including oncology-focused companies, to recruit, hire, train, manage, and retain marketing and sales personnel, which is expensive and time consuming and could delay any product launch. Developing our sales capabilities may also divert resources and management attention away from product development.

In the event we are unable to develop a marketing and sales infrastructure, we may not be able to commercialize our product candidates, which could limit our ability to generate product revenues and materially harm our business, financial condition, results of operations, stock price and prospects. Factors that may inhibit our efforts to commercialize our product candidates include:

Even if any of our product candidates receive marketing approval, they may fail to achieve the degree of market acceptance by physicians, patients, hospitals, cancer treatment centers, third-party payors and others in the medical community necessary for commercial success. The revenues that we generate from their sales may be limited, and we may never become profitable.

We have never commercialized a product candidate for any indication. Even if our product candidates are approved by the appropriate regulatory authorities for marketing and sale, they may not gain acceptance among physicians, patients, third-party payors, and others in the medical community. If any product candidates for which we obtain regulatory approval does not gain an adequate level of market acceptance, we could be prevented from or significantly delayed in achieving profitability. Market acceptance of our product candidates by the medical community, patients, and third-party payors will depend on a number of factors, some of which are beyond our control. For example, physicians are often reluctant to switch their patients and patients may be reluctant to switch from existing therapies even when new and potentially more effective or safer treatments enter the market.

Efforts to educate the medical community and third-party payors on the benefits of our product candidates may require significant resources and may not be successful. If any of our product candidates is approved but does not achieve an adequate level of market acceptance, we could be prevented from or significantly delayed in achieving profitability. The degree of market acceptance of any product for which we receive marketing approval will depend on a number of factors, including:

The size of the potential market for our product candidates is difficult to estimate and, if any of our assumptions are inaccurate, the actual markets for our product candidates may be smaller than our estimates.

The potential market opportunities for our product candidates are difficult to estimate and will depend in large part on the drugs with which our product candidates are co-administered and the success of competing therapies and therapeutic approaches. In particular, the market opportunity for viral immunotherapies is hard to estimate given that it is an emerging field with only one existing FDA-approved viral immunotherapy, T-VEC, which has yet to enjoy broad market acceptance. Our estimates of the potential market opportunities are predicated on many assumptions, which may include industry knowledge and publications, third-party research reports, and other surveys. Although we believe that our internal assumptions are reasonable, these assumptions involve the exercise of significant judgment on the part of our management, are inherently uncertain, and their reasonableness has not been assessed by an independent source. If any of the assumptions proves to be inaccurate, the actual markets for our product candidates could be smaller than our estimates of the potential market opportunities.

Negative developments in the field of immuno-oncology, particularly with respect to viral immunotherapies, could damage public perception of our HSV and vRNA Immunotherapy Platforms and our product candidates, which would adversely affect our business.

The commercial success of our product candidates will depend in part on public acceptance of the use of viral immunotherapies to treat cancer patients. Adverse events in clinical trials of our product candidates, including ONCR-177, or in clinical trials of other companies developing similar products and the resulting publicity, as well as any other negative developments in the field of immuno-oncology that may occur in the future, including in connection with competitor therapies or with immune checkpoint inhibitors, could result in a decrease in demand for ONCR-177 or any other product candidates that we may develop. These events could also result in the suspension, discontinuation, or clinical hold of or modification to our clinical trials. If public perception is influenced by claims that the use of cancer immunotherapies is unsafe, whether related to our therapies or those of our competitors, our product candidates may not be accepted by the general public or the medical community and potential clinical trial subjects may be discouraged from

enrolling in our clinical trials. As a result, we may not be able to continue or may be delayed in conducting our development programs.

As our product candidates consist of modified or synthetic viruses, adverse developments in anti-viral vaccines or clinical trials of other viral immunotherapy products may result in a disproportionately negative effect for ONCR-177 or our other product candidates as compared to other products in the field of immuno-oncology that are not based on viruses. Future negative developments in the field of immuno-oncology or the biopharmaceutical industry could also result in greater governmental regulation, stricter labeling requirements and potential regulatory delays in the testing or approvals of our products. Any increased scrutiny could delay or increase the costs of obtaining marketing approval for ONCR-177 or our other product candidates.

If we are unable to obtain, maintain and protect our intellectual property rights for our technology and product candidates, or if our intellectual property rights are inadequate, our competitive position could be harmed.

Our commercial success will depend in part on our ability to obtain and maintain patent and other intellectual property protection in the United States and other countries with respect to our technology, including our HSV Platform and our selectively self-amplifying vRNA Immunotherapy Platform, and ONCR-177 and our other product candidates. We also rely in part on trade secret, copyright and trademark laws, and confidentiality, licensing and other agreements with employees and third parties, all of which offer only limited protection. We seek to protect our proprietary position by filing and prosecuting patent applications in the United States and abroad related to our technology and product candidates.

The patent positions of biotechnology and pharmaceutical companies generally are highly uncertain, involve complex legal and factual questions and have in recent years been the subject of much litigation. As a result, the issuance, scope, validity, enforceability and commercial value of our licensed patents and any patents we own are highly uncertain. The steps we have taken to protect our proprietary rights may not be adequate to preclude misappropriation of our proprietary information or infringement of our intellectual property rights, both inside and outside of the United States.

Further, the examination process may require us to narrow the claims for our pending patent applications, which may limit the scope of patent protection that may be obtained if these applications issue. Our pending and future patent applications may not result in patents being issued that protect our product candidates, in whole or in part, or which effectively prevent others from commercializing competitive product candidates. The scope of a patent may also be reinterpreted after issuance. The rights that may be granted under our issued patents may not provide us with the proprietary protection or competitive advantages we are seeking. Even if our patent applications issue as patents, they may not issue in a form that will provide us with any meaningful protection, prevent competitors from competing with us or otherwise provide us with any competitive advantage. If we are unable to obtain and maintain patent protection for our technology or for ONCR-177 or our other product candidates, or if the scope of the patent protection obtained is not sufficient, our competitors could develop and commercialize products similar or superior to ours in a non-infringing manner, and our ability to successfully commercialize ONCR-177 or our other product candidates and future technologies may be adversely affected. It is also possible that we will fail to identify patentable aspects of inventions made in the course of our development and commercialization activities before it is too late to obtain patent protection on them.

In addition, the patent prosecution process is expensive, time-consuming and complex, and we may not be able to file, prosecute, maintain, enforce or license all necessary or desirable patent applications at a reasonable cost or in a timely manner. Although we enter into non-disclosure and confidentiality agreements with parties who have access to confidential or patentable aspects of our research and development output, such as our employees, collaborators, and other third parties, any of these parties may breach the agreements and disclose such output before a patent application is filed, thereby jeopardizing our ability to seek patent protection. It is also possible that we will fail to identify patentable aspects of our research and development efforts in time to obtain patent protection.

For the core technology in our HSV Platform and vRNA Immunotherapy Platforms, patent applications are pending at each of the U.S. provisional, Patent Cooperation Treaty, or PCT, and national stages with, minimally, filings submitted to the U.S., European Patent Conventions, or EPC, and Japan. As of February 18, 2022, our patent portfolio consisted of 12 issued U.S. patents, 22 pending U.S. patent applications, 28 issued foreign patents and approximately 141 pending foreign applications. Any future provisional patent applications are not eligible to become issued patents until, among other things, we file a non-provisional patent application within 12 months of filing of one or more of our related provisional patent applications. If we do not timely file any non-provisional patent applications, we may lose our priority date with respect to our provisional patent applications and any patent protection on the inventions disclosed in our provisional patent applications. Although we intend to timely file non-provisional patent applications relating to our provisional patent applications, we cannot predict whether any of our future patent applications will result in the issuance of patents that effectively protect our technology or our product candidates, or if any of our future issued patents will effectively prevent others from commercializing competitive products. We may be subject to a third-party preissuance submission of prior art to the U.S. Patent and Trademark Office, or USPTO. Publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the United States and other jurisdictions are typically not published until 18 months after filing or in some cases not at all until they are issued as a patent. Therefore, we cannot be certain that we were the first to make the inventions claimed in our pending patent applications, or that we were the first to file for patent protection of such inventions.

Our pending applications cannot be enforced against third parties practicing the inventions claimed in such applications unless and until a patent issues from such applications with a claim that covers such third party activity. Because the issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, issued patents that we license from third parties or own in the future may be challenged in the courts or patent offices in the United States and abroad, including through opposition proceedings, derivation proceedings, post-grant review, inter partes review, interference proceedings or litigation. Such proceedings may result in the loss of patent protection, the narrowing of claims in such patents or the invalidity or unenforceability of such patents, which could limit our ability to stop others from using or commercializing similar or identical products, or limit the duration of the patent protection for our technology. Protecting against the unauthorized use of our patented inventions, trademarks and other intellectual property rights is expensive, time consuming, difficult and in some cases may not be possible. In some cases, it may be difficult or impossible to detect third-party infringement or misappropriation of our intellectual property rights, even in relation to issued patent claims, and proving any such infringement may be even more difficult. If we are unable to obtain, maintain, and protect our intellectual property our competitive advantage could be harmed, and it could result in a material adverse effect on our business, financial condition, results of operations, stock price and prospects.

If we fail to comply with our obligations in the agreements under which we license intellectual property rights from third parties or otherwise experience disruptions to our business relationships with our licensors, we could lose intellectual property rights that are important to our business.

We are a party to license agreements with entities including the University of Pittsburgh, Northwestern University, WuXi Biologics, Ospedale San Raffaele S.r.l. and Fondazione Telethon, The Washington University and Gaeta Therapeutics Ltd., and we may need to obtain additional licenses from others to advance our research and development activities or allow the commercialization of our current or future product candidates. These license agreements impose, and we expect that future license agreements will impose, various development, diligence, commercialization, and other obligations on us. For example, under our license agreement with the University of Pittsburgh, we are required to use commercially reasonable efforts to engage in various development and commercialization activities with respect to licensed products, and must satisfy specified milestone and royalty payment obligations. In spite of our efforts, our licensors might conclude that we have materially breached our obligations under such license agreements and might therefore terminate the license agreements, thereby removing or limiting our ability to develop and commercialize products and technology covered by the intellectual property under these license agreements. If these in-licenses are terminated, or if the underlying patents fail to provide the intended exclusivity, competitors or other third parties would have the freedom to seek regulatory approval of, and to market, products identical to ours and we may be required to cease our development and commercialization our product candidates. Any of the foregoing could have a material adverse effect on our competitive position, business, financial conditions, results of operations, and prospects.

Moreover, disputes may arise regarding intellectual property subject to a licensing agreement, including:

In addition, the agreements under which we currently license intellectual property or technology from third parties are complex, and certain provisions in such agreements may be susceptible to multiple interpretations. The resolution of any contract interpretation disagreement that may arise could narrow what we believe to be the scope of our rights to the relevant intellectual property or technology, or increase what we believe to be our financial or other obligations under the relevant agreement, either of which could have a material adverse effect on our business, financial condition, results of operations, and prospects. Moreover, if disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on commercially acceptable terms, we may be unable to successfully develop and commercialize the affected product candidates, which could have a material adverse effect on our business, financial conditions, results of operations, and prospects.

If we are unable to protect the confidentiality of our proprietary information and know-how, the value of our technology and products could be adversely affected.

In addition to seeking patent protection, we also rely on other proprietary rights, including protection of trade secrets, know-how and confidential and proprietary information. To maintain the confidentiality of our trade secrets and proprietary information, we enter into confidentiality agreements with our employees, consultants, collaborators, contractors, and other third parties who have access to our trade secrets. Our agreements with employees and consultants also provide that any inventions conceived by the individual employee or consultant in the course of rendering services to us shall be our exclusive property. However, we may not obtain these agreements in all circumstances, and individuals with whom we have these agreements may not comply with their terms. The assignment of intellectual property rights may not be self-executing or the assignment agreements may be breached, and we may be forced to bring claims against third parties, or defend claims that they may bring against us, to determine the ownership of what we regard as our intellectual property. In addition, we cannot be certain that our trade secrets and other confidential proprietary information will not be disclosed or that competitors will not otherwise gain access to our trade secrets or independently develop substantially equivalent information and techniques. In the event of unauthorized use or disclosure of our trade secrets or proprietary information, these agreements, even if obtained, may not provide meaningful protection, particularly for our trade secrets or other confidential information. To the extent that our employees, consultants or contractors use technology or know-how owned by third parties in their work for us, disputes may arise between us and those third parties as to the rights in related inventions.

Adequate remedies may not exist in the event of unauthorized use or disclosure of our confidential information including a breach of our confidentiality agreements. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret is difficult, expensive, and time consuming, and the outcome is unpredictable. In addition, some courts in and outside of the United States are less willing or unwilling to protect trade secrets. If any of our trade secrets were to be lawfully obtained or independently developed by a competitor or other third party, we would have no right to prevent them from using that technology or information to compete with us. The disclosure of our trade secrets or the independent development of our trade secrets by a competitor or other third party would impair our competitive position and may materially harm our business, financial condition, results of operations, stock price and prospects.

Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights, the outcome of which would be uncertain and could harm our business.

Our commercial success depends on our ability and the ability of any future collaborators to develop, manufacture, market and sell product candidates from our HSV Platform and our selectively self-amplifying vRNA Immunotherapy Platform, and to use our related proprietary technologies without infringing, misappropriating or otherwise violating the intellectual property and proprietary rights of third parties. The biotechnology and pharmaceutical industries are characterized by extensive litigation regarding patents and other intellectual property rights. We may become party to, or threatened with, adversarial proceedings or litigation regarding intellectual property rights with respect to our current and any other future product candidates, including interference proceedings, post-grant review, inter partes review and derivation proceedings before the USPTO. Third parties may assert infringement or other intellectual property claims against us based on existing patents or patents that may be granted in the future. Numerous U.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist in the fields in which we are pursuing development candidates. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that we may be subject to claims of infringement of the patent rights of third parties. If we are found to infringe a third party’s intellectual property rights, and we are unsuccessful in demonstrating that such intellectual property rights are invalid or unenforceable, we could be required to obtain a license from such third party to continue developing, manufacturing and commercializing our product candidates. However, we may not be able to obtain any required license on commercially reasonable terms or at all. Even if we were able to obtain a license, it could be non-exclusive, thereby giving our competitors and other third parties access to the same technologies licensed to us, and it could require us to make substantial licensing and royalty payments. We also could be forced, including by court order, to cease developing, manufacturing, and commercializing our product candidates. In addition, in any such proceeding or litigation, we could be found liable for significant monetary damages, including treble damages and attorneys’ fees, if we are found to have willfully infringed a patent or other intellectual property right. Any of the foregoing could have a material adverse effect on our business, financial condition, results of operations, stock price and prospects. Any claims by third parties that we have misappropriated their confidential information or trade secrets could have a similar material adverse effect on our business. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business.

Parties making claims against us may be able to sustain the costs of complex patent litigation more effectively than we can because they have substantially greater resources. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation or administrative proceedings, there is a risk that some of our confidential information could be compromised by disclosure. In addition, any uncertainties resulting from the initiation and continuation of any litigation could have material adverse effect on our ability to raise additional funds or otherwise have a material adverse effect on our business, results of operations, financial condition and prospects.

Furthermore, in addition to developing ONCR-177 as a monotherapy, we are also developing ONCR-177 in combination with the commercially available anti-PD-1 checkpoint inhibitor pembrolizumab. Pembrolizumab, while commercially available in the market, is covered by patents held by Merck. We have entered into a clinical trial collaboration and supply agreement with Merck under which Merck has agreed to supply pembrolizumab for our ongoing Phase 1 clinical trial. We also plan to develop our product candidates in combination with products developed by additional companies that are covered by patents or licenses held by those entities to which we do not have a license or a sublicense. In the event that a labeling instruction is required in product packaging recommending that combination, we could be accused of, or held liable for, infringement of the third-party patents covering the product candidate or product recommended for administration with ONCR-177 or our other product candidates. In such a case, we could be required to obtain a license from the other company or institution to use the required or desired package labeling, which may not be available on commercially reasonable terms, or at all.

We may not be able to protect our intellectual property and proprietary rights throughout the world.

Filing, prosecuting and defending patents on our technology throughout the world would be prohibitively expensive, and our intellectual property rights in some countries outside the United States can be less extensive than those in the United States. In addition, the laws and practices of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the United States. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the United States, or from selling or importing products made using our inventions in and into the United States or other jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop and/or manufacture their own products, and may export otherwise infringing products to territories where we have patent protection but where enforcement is not as strong as that in the United States. These products may compete with our products and our patent claims or other intellectual property rights may not be effective or sufficient to prevent them from so competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in certain foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the granting or enforcement of patents, trade secrets and other intellectual property protection, particularly those relating to biopharmaceuticals, which could make it difficult for us to obtain patent rights or stop the infringement of our patents or marketing of competing products in violation of our intellectual property and proprietary rights generally in those countries. Proceedings to enforce our intellectual property and proprietary rights in foreign jurisdictions could result in substantial cost and divert our efforts and attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to protect and enforce our intellectual property and proprietary rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property we develop or license.

In addition, the laws of certain foreign countries may not protect our rights to the same extent as the laws of the United States, and those foreign laws may also be subject to change. For example, methods of treatment and manufacturing processes may not be patentable in certain jurisdictions, and the requirements for patentability may differ in certain countries. Furthermore, biosimilar product manufacturers or other competitors may challenge the scope, validity and enforceability of our patents, requiring us to engage in complex, lengthy and costly litigation or proceedings.

Moreover, many countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. Many countries limit the enforceability of patents against government agencies or government contractors. In these countries, the patent owner may have limited remedies, which could materially diminish the value of such patent. If we are forced to grant a license to third parties with respect to any patents relevant to our business, our competitive position may be impaired, and our business and results of operations may be adversely affected.

Obtaining and maintaining patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.

The USPTO and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee payments and other similar provisions during the patent application process and to maintain patents after they are issued. For example, periodic maintenance fees, renewal fees, annuity fees and various other government fees on issued patents and patent applications often must be paid to the USPTO and foreign patent agencies over the lifetime of our licensed patents or any patents we own. In certain circumstances, we may rely on future licensing partners to take the necessary action to comply with these requirements with respect to licensed intellectual property. Although an unintentional lapse can be cured for a period of time by payment of a late fee or by other means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. Non-compliance events that could result in abandonment or lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within prescribed time limits, non-payment of fees and failure to properly legalize and submit formal documents. If we fail to obtain and maintain the patents and patent applications covering our products or procedures, we may not be

able to stop a competitor from marketing products that are the same as or similar to ONCR-177 or our other product candidates, which could have a material adverse effect on our business.

Changes to the patent law in the United States and other jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect ONCR-177 and our other product candidates.

As is the case with other biopharmaceutical companies, our success is heavily dependent on intellectual property, particularly patents. Obtaining and enforcing patents in the biopharmaceutical industry involves both technological and legal complexity and is therefore costly, time consuming and inherently uncertain. Changes in either the patent laws or interpretation of the patent laws in the United States or other jurisdictions in which we have or seek patent protection could increase the uncertainties and costs surrounding the prosecution of patent applications and the enforcement or defense of issued patents. Patent reform legislation in the United States and other countries, including the Leahy-Smith America Invents Act, or the Leahy-Smith Act, signed into law in the United States on September 16, 2011, could increase those uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents. The Leahy-Smith Act includes a number of significant changes to U.S. patent law. These include provisions that affect the way patent applications are prosecuted, redefine prior art and provide more efficient and cost-effective avenues for competitors to challenge the validity of patents. These include allowing third-party submission of prior art to the USPTO during patent prosecution and additional procedures to attack the validity of a patent by USPTO administered post-grant proceedings, including post-grant review, inter partes review, and derivation proceedings. After March 2013, under the Leahy-Smith Act, the United States transitioned to a first inventor to file system in which, assuming that the other statutory requirements are met, the first inventor to file a patent application will be entitled to the patent on an invention regardless of whether a third party was the first to invent the claimed invention. However, the Leahy-Smith Act and its implementation could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents, all of which could have a material adverse effect on our business, financial condition, results of operations, stock price and prospects.

The U.S. Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. Depending on future actions by the U.S. Congress, the U.S. courts, the USPTO and the relevant law-making bodies in other countries, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future.

We may wish to acquire rights to future assets through in-licensing or may attempt to form collaborations in the future with respect to our product candidates, but may not be able to do so, which may cause us to alter or delay our development and commercialization plans.

The development and potential commercialization of our product candidates will require substantial additional capital to fund expenses. We may, in the future, decide to collaborate with other biopharmaceutical companies for the development and potential commercialization of those product candidates in other countries or territories of the world. We will face significant competition in seeking appropriate collaborators. We may not be successful in our efforts to establish a strategic partnership or other alternative arrangements for our product candidates because they may be deemed to be at too early of a stage of development for collaborative effort and third parties may not view our product candidates as having the requisite potential to demonstrate safety and efficacy. If and when we collaborate with a third party for development and commercialization of a product candidate, we can expect to relinquish some or all of the control over the future success of that product candidate to the third party. Our ability to reach a definitive agreement for a collaboration will depend, among other things, upon our assessment of the collaborator’s resources and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator’s evaluation of a number of factors. Those factors may include the following:

The collaborator may also consider alternative product candidates or technologies for similar indications that may be available to collaborate on and whether such a collaboration could be more attractive than the one with us for our product candidate. We may also be restricted under any license agreements from entering into agreements on certain terms or at all with potential collaborators. Collaborations are complex and time-consuming to negotiate and document. In addition, there have been a significant number of recent business combinations among large pharmaceutical companies that have resulted in a reduced number of potential future

collaborators and changes to the strategies of the combined company. As a result, we may not be able to negotiate collaborations on a timely basis, on acceptable terms, or at all. If we are unable to do so, we may have to curtail the development of such product candidate, reduce or delay one or more of our other development programs, delay the potential commercialization or reduce the scope of any planned sales or marketing activities for such product candidate, or increase our expenditures and undertake development, manufacturing or commercialization activities at our own expense. If we elect to increase our expenditures to fund development, manufacturing or commercialization activities on our own, we may need to obtain additional capital, which may not be available to us on acceptable terms or at all. If we do not have sufficient funds, we may not be able to further develop our product candidates or bring them to market and generate product revenue.

We may become involved in lawsuits to protect or enforce our intellectual property, which could be expensive, time-consuming and unsuccessful and have a material adverse effect on the success of our business.

Competitors may infringe our licensed patents or any patent we own or misappropriate or otherwise violate our intellectual property rights. Litigation may be necessary in the future to enforce or defend our intellectual property rights, to protect our trade secrets, or to determine the validity and scope of our own intellectual property rights or the proprietary rights of others. If we were to initiate legal proceedings against a third party to enforce a patent covering our product candidates, the defendant could counterclaim that the patent covering our product candidate is invalid and/or unenforceable. In patent litigation in the United States, defendant counterclaims alleging invalidity and/or unenforceability are commonplace. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, including lack of novelty, obviousness, written description or non-enablement. Grounds for an unenforceability assertion could be an allegation that someone connected with prosecution of the patent withheld relevant information from the USPTO, or made a misleading statement, during prosecution. The outcome following legal assertions of invalidity and unenforceability is unpredictable. Our licensed patents and any patents we own in the future may become involved in priority or other intellectual property related disputes. Interference or derivation proceedings provoked by third parties or brought by us or declared by the USPTO may be necessary to determine the priority of inventions with respect to our patents or patent applications. Also, third parties may initiate legal proceedings against us to challenge the validity or scope of our owned or licensed intellectual property rights. These proceedings can be expensive and time consuming. Many of our current and potential competitors have the ability to dedicate substantially greater resources to conduct intellectual property related litigations or proceedings than we can. We may not have sufficient financial or other resources to conduct such litigation or proceedings adequately. Accordingly, despite our efforts, we may not be able to prevent third parties from infringing upon or misappropriating our intellectual property. Litigation and other intellectual property related proceedings could result in substantial costs and diversion of management resources, which could harm our business and financial results. In addition, in an infringement proceeding, a court may decide that a patent owned by or licensed to us is invalid or unenforceable, or may refuse to stop the other party from using the technology at issue on the grounds that our patents do not cover the technology in question. An adverse result in any litigation or other intellectual property related proceeding could put one or more of our patents at risk of being invalidated, held unenforceable or interpreted narrowly.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation in the United States, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation. There could also be public announcements of the results of hearings, motions or other interim proceedings or developments in any such proceedings. If securities analysts or investors perceive these results to be negative, it could have a material adverse effect on the price of shares of our common stock, and could have a material adverse effect on our ability to raise the funds necessary to continue our clinical trials, continue our research programs, license necessary technology from third parties, or enter into development partnerships that would help us bring our product candidates to market. Any of the foregoing may have a material adverse effect our business, financial condition, results of operations, stock price and prospects.

We may be subject to claims by third parties asserting that we, our employees or any future collaborators have misappropriated their intellectual property, or claiming ownership of what we regard as our own intellectual property.

Many of our employees, including our senior management team, were previously employed at, or consulted for, universities or other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Some of these people, including each member of our senior management team, executed proprietary rights, non-disclosure and non-competition agreements, or similar agreements, in connection with such previous employment or consulting agreements, that assigned ownership of intellectual property relating to work performed under such agreements to the contracting third party. Although we try to ensure that our employees do not use, claim as theirs, or misappropriate the intellectual property, proprietary information or know-how of others in their work for us, we may be subject to claims that we or these employees have used, claimed as theirs, misappropriated or disclosed intellectual property, including trade secrets or other proprietary information, of any such individual’s current or former employer. Litigation may be necessary to defend against such claims. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel or sustain damages. Such intellectual property rights could be awarded to a third party, and we could be required to obtain a license from such third party to commercialize our technology or products. Such a license may not be available on commercially reasonable terms, or at all. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management. Any of the foregoing may have a material adverse effect on our business, financial condition, results of operations, stock price and prospects.

We may be subject to damages resulting from claims that we or our employees have wrongfully used or disclosed confidential information of third parties or are in breach of non-competition or non-solicitation agreements with our competitors.

We could be subject to claims that we or our employees, including senior management, have inadvertently or otherwise used or disclosed alleged trade secrets or other confidential information of former employers or competitors or others. Although we try to ensure that our employees and consultants do not use the intellectual property, proprietary information, know-how or trade secrets of others in their work for us, we may be subject to claims that we caused an employee to breach the terms of their non-competition or non-solicitation agreement, or that we or these individuals have, inadvertently or otherwise, used or disclosed the alleged trade secrets or other proprietary information of a former employer or competitor or other party. Litigation may be necessary to defend against these claims. Even if we are successful in defending against these claims, litigation could result in substantial costs and could be a distraction to management. If our defenses to these claims fail, in addition to requiring us to pay monetary damages, a court could prohibit us from using technologies or features that are essential to our product candidates, if such technologies or features are found to incorporate or be derived from the trade secrets or other proprietary information of the former employers, competitors or other parties. An inability to incorporate such technologies or features would have a material adverse effect on our business, and may prevent us from successfully commercializing our product candidates. In addition, we may lose valuable intellectual property rights or personnel as a result of such claims. Moreover, any such litigation or the threat thereof may adversely affect our ability to hire employees or consultants. A loss of key personnel or their work product could hamper or prevent our ability to develop and commercialize our product candidates, which could have an adverse effect on our business, financial condition, results of operations, stock price and prospects.

If we obtain any issued patents covering our technology, such patents could be found invalid or unenforceable if challenged in court or before the USPTO or comparable foreign regulatory authority.

If we or one of our licensing partners initiate legal proceedings against a third party to enforce a patent covering any of our technology, the defendant could counterclaim that the patent covering our product candidate is invalid or unenforceable. In patent litigation in the United States, defendant counterclaims alleging invalidity or unenforceability are commonplace, and there are numerous grounds upon which a third party can assert invalidity or unenforceability of a patent. Grounds for a validity challenge could be, among other things, an alleged failure to meet any of several statutory requirements, including lack of novelty, obviousness, or non-enablement. Grounds for an unenforceability assertion could be, among other things, an allegation that someone connected with prosecution of the patent withheld relevant information from the USPTO, or made a misleading statement, during prosecution. Third parties may also raise similar claims before administrative bodies in the United States or abroad, even outside the context of litigation. Such mechanisms include re-examination, inter partes review, post-grant review, interference proceedings, derivation proceedings and equivalent proceedings in foreign jurisdictions, such as opposition proceedings. Such proceedings could result in revocation, cancellation or amendment to our patents in such a way that they no longer cover and protect our product candidates. The outcome following legal assertions of invalidity and unenforceability is unpredictable. For example, with respect to the validity of our licensed patents or any patents we obtain in the future, we cannot be certain that there is no invalidating prior art of which we, our or our licensing partner’s patent counsel, and the patent examiner were unaware during prosecution. If a third party were to prevail on a legal assertion of invalidity and/or unenforceability, we would lose at least part, and perhaps all, of the patent protection on our product candidates. Such a loss of patent protection could have a material adverse impact on our business.

Patent terms may be inadequate to protect our competitive position on our products for an adequate amount of time, and our product candidates for which we intend to seek approval as biological products may face competition sooner than anticipated.

Patents have a limited lifespan. In the United States, if all maintenance fees are timely paid, the natural expiration of a patent is generally 20 years from its earliest U.S. non-provisional filing date. Various extensions may be available, but the life of a patent, and the protection it affords, is limited. Even if patents covering our product candidates are obtained, once the patent life has expired, we may be open to competition from competitive products, including generics or biosimilars. Given the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such candidates might expire before or shortly after such candidates are commercialized. As a result, our owned and licensed patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours.

In the United States, the Drug Price Competition and Patent Term Restoration Act of 1984 permits a patent term extension of up to five years beyond the normal expiration of the patent, but no longer than 14 years from the product’s approval date, which is limited to the approved indication (or any additional indications approved during the period of extension). However, the applicable authorities, including the FDA and the USPTO in the United States, and any equivalent regulatory authorities in other countries, may not agree with our assessment of whether such extensions are available, and may refuse to grant extensions to our patents, or may grant more limited extensions than we request. If this occurs, our competitors may be able to take advantage of our investment in development and clinical trials by referencing our clinical and preclinical data and launch their products earlier than might otherwise be the case, which could have a material adverse effect on our business, financial condition, results of operations, stock price and prospects.

The enactment of the Biologics Price Competition and Innovation Act of 2009, or BPCIA, as part of the Patient Protection and Affordable Care Act as amended by the Health Care and Education Reconciliation Act, or ACA, created an abbreviated pathway for the approval of biosimilar and interchangeable biological products. The abbreviated regulatory pathway establishes legal authority for

the FDA to review and approve biosimilar biologics, including the possible designation of a biosimilar as “interchangeable” based on its similarity to an existing brand product. Under the BPCIA, an application for a biosimilar product cannot be approved by the FDA until 12 years after the original branded product was approved under a BLA. Certain changes, however, and supplements to an approved BLA, and subsequent applications filed by the same sponsor, manufacturer, licensor, predecessor in interest, or other related entity do not qualify for the 12-year exclusivity period.

We expect that product candidates generated from our HSV Platform and selectively self-amplifying vRNA Immunotherapy Platform will be regulated as biologics. We anticipate being awarded market exclusivity for each of our biological product candidates that is subject to its own BLA for 12 years in the United States, 10 years in Europe and significant durations in other markets. However, the term of the patents that cover such product candidates may not extend beyond the applicable market exclusivity awarded by a particular country. For example, in the United States, if all of the patents that cover our particular biological product expire before the 12-year market exclusivity expires, a third party could submit a marketing application for a biosimilar product four years after approval of our biological product, the FDA could immediately review the application and approve the biosimilar product for marketing 12 years after approval of our biological product, and the biosimilar sponsor could then immediately begin marketing. Alternatively, a third party could submit a full BLA for a similar or identical product any time after approval of our biological product, and the FDA could immediately review and approve the similar or identical product for marketing and the third party could begin marketing the similar or identical product upon expiry of all of the patents that cover our particular biological product.

There is also a risk that this exclusivity could be changed in the future. For example, this exclusivity could be shortened due to congressional action or through other actions, including future proposed budgets, international trade agreements and other arrangements or proposals. Additionally, there is a risk that the FDA will not consider our product candidates to be reference products for competing products, potentially creating the opportunity for biosimilar competition sooner than anticipated. The extent to which a biosimilar, once approved, will be substituted for any one of our reference products in a way that is similar to traditional generic substitution for non-biological products is not yet clear, and will depend on a number of marketplace and regulatory factors that are still developing. It is also possible that payors will give reimbursement preference to biosimilars over reference biologics, even absent a determination of interchangeability.

To the extent that we do not receive any anticipated periods of regulatory exclusivity for our product candidates or the FDA or foreign regulatory authorities approve any biosimilar, interchangeable, or other competing products to our product candidates, it could have a material adverse effect on our business, financial condition, results of operations, stock price and prospects.

If we fail to comply with federal and state healthcare laws, including fraud and abuse and patient privacy and security laws, we could face substantial penalties and our business, financial condition, results of operations, stock price and prospects will be materially harmed.

Our current and future arrangements with healthcare providers, third-party payors, customers, and others may expose us to broadly applicable healthcare fraud and abuse, patient privacy and security, and other healthcare laws, which may constrain the business or financial arrangements and relationships through which we research, as well as, sell, market and distribute any products for which we obtain marketing approval. The applicable federal, state and foreign healthcare laws and regulations that may affect our ability to operate include, but are not limited to:

If we or our operations are found to be in violation of any federal or state healthcare law, or any other governmental laws or regulations that apply to us, we may be subject to penalties, including significant civil, criminal, and administrative penalties, damages, monetary fines, disgorgement, imprisonment, suspension and debarment from government contracts, and refusal of orders under existing government contracts, exclusion from participation in U.S. federal or state health care programs, additional reporting requirements and/or oversight if we become subject to corporate integrity agreements or similar agreement to resolve allegations of non-compliance, contractual damages, reputational harm, diminished profits and future earnings, and the curtailment or restructuring of our operations, any of which could materially adversely affect our ability to operate our business and our financial results. If any of the physicians or other healthcare providers or entities with whom we expect to do business is found not to be in compliance with applicable laws, it may be subject to significant criminal, civil or administrative sanctions, including but not limited to, exclusions from participation in U.S. federal or state healthcare programs, which could also materially affect our business.

Although an effective compliance program can mitigate the risk of investigation and prosecution for violations of these laws, the risks cannot be entirely eliminated. Moreover, achieving and sustaining compliance with such laws may prove costly. Any action against us for violation of these laws, even if we successfully defend against it, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business.

If the government or third-party payors fail to provide adequate coverage, reimbursement and payment rates for our product candidates, or if health maintenance organizations or long-term care facilities choose to use therapies that are less expensive or considered a better value, our revenue and prospects for profitability will be limited.

In both domestic and foreign markets, sales of our products will depend in part upon the availability of coverage and adequate reimbursement from third-party payors. Such third-party payors include government health programs such as Medicare and Medicaid, managed care providers, private health insurers, and other organizations. Coverage decisions may depend upon clinical and economic standards that disfavor new therapeutic products when more established or lower cost therapeutic alternatives are already available or subsequently become available, even if our products are alone in a class. Third-party payors establish reimbursement levels. Therefore, even if coverage is provided, the approved reimbursement amount may not be high enough to allow us to establish or maintain a market share sufficient to realize a sufficient return on our or their investments. If reimbursement is not available, or is available only to limited levels, our product candidates may be competitively disadvantaged, and we may not be able to successfully commercialize our product candidates. Alternatively, securing favorable reimbursement terms may require us to compromise pricing and prevent us from realizing an adequate margin over cost.

There is significant uncertainty related to third-party payor coverage and reimbursement of newly approved therapeutics. Marketing approvals, pricing, and reimbursement for new therapeutic products vary widely from country to country. Current and future legislation may significantly change the approval requirements in ways that could involve additional costs and cause delays in obtaining approvals. Some countries require approval of the sale price of a therapeutic before it can be marketed. In many countries, the pricing review period begins after marketing or product licensing approval is granted. In some foreign markets, prescription biopharmaceutical pricing remains subject to continuing governmental control even after initial approval is granted. As a result, we might obtain marketing approval for a product in a particular country, but then be subject to price regulations that delay commercial launch of the product, possibly for lengthy time periods, which may negatively impact the revenues we are able to generate from the sale of the product in that country. Adverse pricing limitations may hinder our ability to recoup our investment in one or more product candidates, even if our product candidates obtain marketing approval. Our ability to commercialize our product candidates will depend in part on the extent to which coverage and reimbursement for these products and related treatments will be available from third-party payors.

The healthcare industry is acutely focused on cost containment, both in the United States and elsewhere. Third-party payors, whether foreign or domestic, or governmental or commercial, are developing increasingly sophisticated methods of controlling healthcare costs. Several third-party payors are requiring that companies provide them with predetermined discounts from list prices, are using preferred drug lists to leverage greater discounts in competitive classes, are disregarding therapeutic differentiators within classes, are challenging the prices charged for therapeutics, and are negotiating price concessions based on performance goals. In addition, third-party payors are increasingly requiring higher levels of evidence of the benefits and clinical outcomes of new technologies, benchmarking against other therapies, seeking performance-based discounts, and challenging the prices charged. We cannot be sure that coverage will be available for any product candidate that we commercialize and, if available, that the reimbursement rates will be adequate. If payors subject our product candidates to maximum payment amounts, or impose limitations that make it difficult to obtain reimbursement, providers may choose to use therapies which are less expensive when compared to our product candidates. Additionally, if payors require high copayments, beneficiaries may seek alternative therapies. We may need to conduct post-marketing studies in order to demonstrate the cost-effectiveness of any products to the satisfaction of hospitals, other target customers and their third-party payors. Such studies might require us to commit a significant amount of management time and financial and other resources. Our products might not ultimately be considered cost-effective. Adequate third-party coverage and reimbursement might not be available to enable us to maintain price levels sufficient to realize an appropriate return on investment in product development.

In addition, in the United States, no uniform policy of coverage and reimbursement for products exists among third-party payors. Therefore, coverage and reimbursement for products can differ significantly from payor to payor. Further, we believe that future coverage and reimbursement will likely be subject to increased restrictions both in the United States and in international markets. Third-party coverage and reimbursement for our products or product candidates for which we receive regulatory approval may not be available or adequate in either the United States or international markets, which could have a negative effect on our business, financial condition, results of operations, stock price and prospects.

There may also be delays in obtaining coverage and reimbursement for newly approved therapeutics, and coverage may be more limited than the indications for which the product is approved by the FDA or comparable foreign regulatory authorities. Such delays have made it increasingly common for manufacturers to provide newly approved drugs to patients experiencing coverage delays or disruption at no cost for a limited period in order to ensure that patients are able to access the drug. Moreover, eligibility for reimbursement does not imply that any therapeutic will be paid for in all cases or at a rate that covers our costs, including research, development, manufacture, sale, and distribution. Interim reimbursement levels for new therapeutics, if applicable, may also not be sufficient to cover our costs and may only be temporary. Reimbursement rates may vary, by way of example, according to the use of the product and the clinical setting in which it is used. Reimbursement rates may also be based on reimbursement levels already set for lower cost products or may be incorporated into existing payments for other services.

An inability to promptly obtain coverage and adequate reimbursement from third-party payors for any of our product candidates for which we obtain marketing approval could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize products and our overall financial condition.

We are subject to new legislation, regulatory proposals and third-party payor initiatives that may increase our costs of compliance, and adversely affect our ability to market our products, obtain collaborators, and raise capital.

In the United States and some foreign jurisdictions, there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system that could prevent or delay marketing approval of our product candidates, restrict or regulate post-approval activities and affect our ability to profitably sell any products for which we obtain marketing approval. We expect that current laws, as well as other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and in additional downward pressure on the price that we may receive for any approved products.

For example, the ACA was passed in March 2010 and substantially changed the way healthcare is financed by both governmental and private insurers, and continues to significantly impact the United States pharmaceutical industry. Since its enactment, there have been executive, judicial and political challenges to certain aspects of the ACA. For example, the Tax Cuts and Jobs Act, or the Tax Act, includes a provision repealing the tax-based shared responsibility payment imposed by the ACA on certain individuals who fail to maintain qualifying health coverage for all or part of a year that is commonly referred to as the “individual mandate.” On June 17, 2021 the U.S. Supreme Court dismissed a challenge on procedural grounds that argued the ACA is unconstitutional in its entirety because the “individual mandate” was repealed by Congress. Thus, the ACA will remain in effect in its current form. Further, prior to the U.S. Supreme Court ruling, on January 28, 2021, President Biden issued an executive order to initiate a special enrollment period for purposes of obtaining health insurance coverage through the ACA marketplace. The executive order also instructs certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the ACA. It is possible that the ACA will be subject to judicial or Congressional challenges in the future. It is unclear how any such challenges and the healthcare reform measures of the Biden administration will impact the ACA and our business.

Other legislative changes have been proposed and adopted in the United States since the ACA was enacted. For example, in August 2011, the Budget Control Act of 2011, among other things, created measures for spending reductions by Congress. A Joint Select Committee on Deficit Reduction, tasked with recommending a targeted deficit reduction of at least $1.2 trillion for the years 2012 through 2021, was unable to reach required goals, thereby triggering the legislation’s automatic reduction to several government programs. This includes aggregate reductions of Medicare payments to providers of up to 2% per fiscal year, which went into effect in April 2013 and, due to subsequent legislative amendments to the statute, will remain in effect through 2030, with the exception of a temporary suspension from May 1, 2021 through March 31, 2022 due to the COVID-19 pandemic, unless additional Congressional action is taken. Under current legislation, the actual reduction in Medicare payments will vary from 1% in 2022 to up to 3% in the final fiscal year of this sequester. On March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 into law, which eliminates the statutory Medicaid drug rebate cap, currently set at 100% of a drug’s average manufacturer price, for single source and innovator multiple source drugs, beginning January 1, 2024. In January 2013, the American Taxpayer Relief Act of 2012, among other things, further reduced Medicare payments to certain providers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years.

There has been heightened governmental scrutiny in the United States of pharmaceutical pricing practices in light of the rising cost of prescription drugs and biologics. Such scrutiny has resulted in several recent congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to product pricing, review the relationship between pricing and manufacturer patient programs, and reform government program reimbursement methodologies for products. For example, the Trump administration used several means to propose or implement drug pricing reform, including through federal budget proposals, executive orders and policy initiatives. For example, on July 24, 2020 and September 13, 2020, the Trump administration announced several executive orders related to prescription drug pricing that seek to implement several of the administration’s proposals. As a result, the FDA released a final rule and guidance in September 2020, providing pathways for states to build and submit importation plans for drugs from Canada. Further, on November 20, 2020, the Department of Health and Human Services, or HHS, finalized a regulation removing safe harbor protection for price reductions from pharmaceutical manufacturers to plan sponsors under Part D, either directly or through pharmacy benefit managers, unless the price reduction is required by law. The implementation of the rule has been delayed by the Biden administration from January 1, 2022 to January 1, 2023 in response to ongoing litigation. The rule also creates a new safe harbor for price reductions reflected at the point-of-sale, as well as a safe harbor for certain fixed fee arrangements between pharmacy benefit managers and manufacturers, the implementation of which have also been delayed until January 1, 2023. On November 20, 2020, the CMS issued an interim final rule implementing President Trump’s Most Favored Nation executive order, which would tie Medicare Part B payments for certain physician-administered drugs to the lowest price paid in other economically advanced countries, effective January 1, 2021. As a result of litigation challenging the Most Favored Nation model, on December 27, 2021, CMS published a final rule that rescinded the Most Favored Nation model interim final rule. In July 2021, the Biden administration released an executive order, “Promoting Competition in the American Economy,” with multiple provisions aimed at prescription drugs. In response to Biden’s executive order, on September 9, 2021, HHS released a Comprehensive Plan for Addressing High Drug Prices that outlines principles for drug pricing reform and sets out a variety of potential legislative policies that Congress could pursue to advance these principles. No legislation or administrative actions have been finalized to implement these principles. In addition, Congress is considering drug pricing as part of other reform initiatives. Any new laws or regulations that result in additional reductions in Medicare and other healthcare funding could have a material adverse effect on customers for our products, if approved, and, accordingly, on our results of operations.

We cannot predict what healthcare reform initiatives may be adopted in the future. However, we expect that the ACA, as well as other federal and state healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria, increased regulatory burdens and operating costs, decreased net revenue from our biopharmaceutical products, decreased potential returns from our development efforts, and additional downward pressure on the price that we receive for any approved product. Any reduction in reimbursement from Medicare or other government healthcare programs may result in a similar reduction in payments

from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from commercializing our products and being able to generate revenue, and we could be prevented from or significantly delayed in achieving profitability. It is also possible that additional governmental action is taken in response to the COVID-19 pandemic.

In addition, there have been a number of other legislative and regulatory proposals aimed at changing the biopharmaceutical industry. For instance, the Drug Quality and Security Act of 2013 imposes obligations on manufacturers of biopharmaceutical products related to product tracking and tracing. Further, manufacturers have product investigation, quarantine, disposition, and notification responsibilities related to counterfeit, diverted, stolen, and intentionally adulterated products that would result in serious adverse health consequences of death to humans, as well as products that are the subject of fraudulent transactions or which are otherwise unfit for distribution such that they would be reasonably likely to result in serious health consequences or death.

Compliance with the federal track and trace requirements may increase our operational expenses and impose significant administrative burdens. As a result of these and other new proposals, we may determine to change our current manner of operation, provide additional benefits or change our contract arrangements, any of which could have a material adverse effect on our business, financial condition, results of operations, stock price and prospects.

We are subject to the U.S. Foreign Corrupt Practices Act and other anti-corruption laws, as well as import and export control laws, customs laws, sanctions laws and other laws governing our operations. If we fail to comply with these laws, we could be subject to civil or criminal penalties, and other consequences, which could adversely affect our business, financial condition, results of operations, stock price and prospects.

Our operations are subject to anti-corruption laws, including the U.S. Foreign Corrupt Practices Act, or FCPA, and other anti-corruption laws that apply in countries where we do business. The FCPA and these other anti-corruption laws generally prohibit us and our employees and intermediaries from authorizing, promising, offering, providing, soliciting, or receiving, directly or indirectly, corrupt or improper payments or anything else of value to or from recipients in the public or private sector. We can be held liable for the corrupt or other illegal activities of our personnel or intermediaries, even if we do not explicitly authorize or have prior knowledge of such activities.

We are also subject to other laws and regulations governing our international operations, including applicable import and export control regulations, economic sanctions on countries and persons, anti-money laundering laws, customs requirements and currency exchange regulations, collectively referred to as the trade control laws.

We can provide no assurance that we will be completely effective in ensuring our compliance with all applicable anti-corruption laws or other legal requirements, including trade control laws. If we are not in compliance with applicable anti-corruption laws or trade control laws, we may be subject to criminal and civil penalties, disgorgement and other sanctions and remedial measures, and legal expenses, which could have an adverse impact on our business, financial condition, results of operations, stock price and prospects. In addition, we cannot predict the nature, scope or effect of future regulatory requirements to which our international operations might be subject or the manner in which existing laws might be administered or interpreted. An investigation of any potential violations of anti-corruption laws or trade control laws by U.S. or other authorities could also have an adverse impact on our reputation, our business, financial condition, results of operations, stock price and prospects.

We are subject to stringent and changing obligations related to privacy and security. Our actual or perceived failure to comply with such obligations could lead to government enforcement actions (which could include civil or criminal penalties), private litigation and/or adverse publicity and could negatively affect our operating results and business.

In the ordinary course of business, we collect, receive, store, process, generate, use, transfer, disclose, make accessible, protect, secure, dispose of, transmit, and share (collectively, processing) sensitive information, including personal data, proprietary and confidential business data, trade secrets, intellectual property, data we collect about trial participants in connection with clinical trials, and sensitive third-party data. Our data processing activities subject us to numerous data privacy and security obligations, such as various laws, regulations, guidance, industry standards, external and internal privacy and security policies, contracts, and other obligations that govern the processing of personal data by us and on our behalf.

In the United States, numerous federal, state, and local governments have enacted numerous data privacy and security laws and regulations, including personal data privacy laws, health information privacy laws, data breach notification laws, personal data privacy laws, and consumer protection laws. For example, HIPAA, as amended by HITECH, imposes specific requirements relating to the privacy, security, and transmission of individually identifiable health information. We may obtain health information from third parties, including research institutions from which we obtain clinical trial data, that are subject to privacy and security requirements under HIPAA, as amended HITECH, and its implementing rules and regulations. Depending on the facts and circumstances, we could be subject to significant penalties if we obtain, use, or disclose individually identifiable health information maintained by a HIPAA-covered entity in a manner that is not authorized or permitted by HIPAA.

Additionally, the California Consumer Privacy Act, or CCPA, imposes obligations on covered businesses. These obligations include, but are not limited to, providing specific disclosures in privacy notices and affording California residents certain rights related to their

personal data. The CCPA also allows for statutory fines for noncompliance (up to $7,500 per violation) and includes a private right of action for certain data breaches. Although there are some exemptions for clinical trial data and health information, the CCPA may impact our business activities and increase our compliance costs and potential liability. In addition, it is anticipated that the California Privacy Rights Act, or CPRA, which will become operative on January 1, 2023, will expand the CCPA, including by expanding consumers’ rights with respect to certain sensitive personal data. The CPRA also creates the new California Privacy Protection Agency to implement and enforce the CCPA and the CPRA, which could increase compliance costs. New legislation proposed or enacted in various other states will continue to shape the data privacy environment nationally. For example, Virginia passed the Consumer Data Protection Act, and Colorado passed the Colorado Privacy Act, both of which become effective in 2023.

Outside the United States, an increasing number of laws, regulations, and industry standards apply to data privacy and security. For example, the European Union’s General Data Protection Regulation, or EU GDPR, and the United Kingdom’s GDPR, or UK GDPR, impose strict requirements for processing personal data. For example, under the EU GDPR, government regulators may impose temporary or definitive bans on data processing, as well as fines up to the greater of €20 million or 4% of annual global revenue. Further, individuals may initiate litigation related to processing of their personal data. In addition, in Canada, the Personal Information Protection and Electronic Documents Act (“PIPEDA”) and various related provincial laws, as well as Canada’s Anti-Spam Legislation (“CASL”), may apply to our operations.

Certain jurisdictions have enacted data localization laws and cross-border personal data transfer laws, which could make it more difficult to transfer information across jurisdictions (such as transferring or receiving personal data that originates in the EU or in other foreign jurisdictions). Existing mechanisms that facilitate cross-border personal data transfers may change or be invalidated. For example, absent appropriate safeguards or other circumstances, the EU GDPR generally restricts the transfer of personal data to countries outside of the European Economic Area, or EEA, that the European Commission does not consider to provide an adequate level of data privacy and security, such as the United States. The European Commission released a set of “Standard Contractual Clauses” (“SCCs”) that are designed to be a valid mechanism to facilitate personal data transfers out of the EEA to these jurisdictions. The SCCs, though approved by the European Commission as a suitable alternative, have faced challenges in European courts, and may be further challenged, suspended or invalidated. Additionally, the SCCs impose additional compliance burdens, such as conducting transfer impact assessments to determine whether additional security measures are necessary to protect the at-issue personal data. Other countries in Europe, such as the UK, similarly restrict personal data transfers outside of those jurisdictions to countries such as the United States that do not provide an adequate level of personal data protection. If we cannot implement a valid compliance mechanism for cross-border data transfers, we may face increased exposure to regulatory actions, substantial fines, and injunctions against processing or transferring personal data from Europe or other foreign jurisdictions. The inability to import personal data to the United States could significantly and negatively impact our business operations, limiting our ability to collaborate with parties that are subject to such cross-border data transfer or localization laws; or requiring us to increase our personal data processing capabilities and infrastructure in foreign jurisdictions at significant expense.

Our obligations related to data privacy and security are quickly changing in an increasingly stringent fashion, creating some uncertainty as to the effective future legal framework. Additionally, these obligations may be subject to differing applications and interpretations, which may be inconsistent or conflict among jurisdictions. Preparing for and complying with these obligations requires significant resources and may necessitate changes to our information technologies, systems, and practices and to those of any third parties that process personal data on our behalf. Although we endeavor to comply with all applicable data privacy and security obligations, we may at times fail (or be perceived to have failed) to do so. Moreover, despite our efforts, our personnel or third parties upon whom we rely may fail to comply with such obligations, which could negatively impact our business operations and compliance posture. For example, any failure by a third-party processor to comply with applicable law, regulations, or contractual obligations could result in adverse effects, including inability to or interruption in our ability to operate our business and proceedings against us by governmental entities or others.

If we fail, or are perceived to have failed, to address or comply with data privacy and security obligations, we could face significant consequences. These consequences may include, but are not limited to, government enforcement actions (e.g. investigations, fines, penalties, audits, inspections, and similar), private litigation (including class-related claims), additional reporting requirements and/or oversight, bans on processing personal data; orders to destroy or not use personal data, and imprisonment of company officials. Moreover, clinical trial subjects about whom we or our potential collaborators obtain information, as well as the providers who share this information with us, may contractually limit our ability to use and disclose the information. Any of these events could have a material adverse effect on our reputation, business, or financial condition, including but not limited to, loss of customers, interruptions or stoppages in our business operations (including, as relevant, clinical trials); inability to process personal data or to operate in certain jurisdictions; limited ability to develop or commercialize our products; expenditure of time and resources to defend any claim or inquiry; adverse publicity; or revision or restructuring of our operations.

Violations of or liabilities under environmental, health and safety laws and regulations could subject us to fines, penalties or other costs that could have a material adverse effect on the success of our business.

We are subject to numerous environmental, health and safety laws and regulations, including those governing laboratory procedures, the handling, use, storage, treatment and disposal of hazardous materials and wastes and the cleanup of contaminated sites. Our

operations involve the use of hazardous and flammable materials, including chemicals and biological materials. Our operations also produce hazardous waste products. We would incur substantial costs as a result of violations of or liabilities under environmental requirements in connection with our operations or property, including fines, penalties and other sanctions, investigation and cleanup costs and third-party claims. Although we generally contract with third parties for the disposal of hazardous materials and wastes from our operations, we cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from our use of hazardous materials, we could be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with civil or criminal fines and penalties.

Although we maintain workers’ compensation insurance to cover us for costs and expenses we may incur due to injuries to our employees resulting from the use of hazardous materials, this insurance may not provide adequate coverage against potential liabilities. We do not maintain insurance for environmental liability or toxic tort claims that may be asserted against us in connection with our storage or disposal of biological or hazardous materials.

We have generated significant net operating loss (NOL) carryforwards and research and development tax credits, and our ability to utilize our net operating loss carryforwards and research and development tax credits to reduce future tax payments may be limited or restricted.

We have generated significant NOL carryforwards and research and development tax credits, or R&D credits, as a result of our incurrence of losses and our conduct of research activities since inception. As of December 31, 2021, we had federal and state NOL carryforwards of $153.0 million and $150.1 million, respectively. We do not anticipate generating revenue from sales of products for the foreseeable future, if ever, and we may never achieve profitability. Our U.S. federal NOL carryforwards generated in taxable years prior to 2018 will expire if not utilized beginning in 2035. These NOL carryforwards could expire unused and be unavailable to offset future income tax liabilities. Under the Tax Act, as modified by the CARES Act, U.S. federal NOLs incurred in tax years beginning after December 31, 2017 may be carried forward indefinitely, but the utilization of U.S. federal NOLs generated in tax years beginning after December 31, 2020 is limited. As of December 31, 2021, we also had federal and state R&D credit carryforwards of $5.1 million and $2.4 million, respectively. Our federal R&D credit carryforwards begin to expire in 2035 and our state R&D credit carryforwards begin to expire in 2030. These R&D credit carryforwards could expire unused and be unavailable to offset future income tax liabilities.

Under Sections 382 and 383 of the Code, and corresponding provisions of state law, if a corporation undergoes an “ownership change,” the corporation’s ability to use its pre-change NOL carryforwards and R&D credits to offset its post-change income and taxes, respectively, may be limited. For purposes of these rules, an “ownership change” generally occurs if one or more stockholders or groups of stockholders who own at least 5% of our stock increase their ownership by more than 50 percentage points over their lowest ownership percentage within a rolling three-year period. The application of these rules could limit the amount of NOLs or R&D credit carryforwards that we can utilize annually to offset future taxable income or tax liabilities. In addition, at the state level, there may be periods during which the use of NOLs is suspended or otherwise limited, which could accelerate or permanently increase state taxes owed. Our NOL and R&D credit carryforwards are subject to review and possible adjustment by U.S. and state tax authorities.

We are highly dependent on our key personnel. If we are not successful in attracting, motivating and retaining highly qualified personnel, we may not be able to successfully implement our business strategy.

Our ability to compete in the highly competitive biotechnology and pharmaceutical industries depends upon our ability to attract, motivate and retain highly qualified managerial, scientific and medical personnel. We are highly dependent on our management and particularly on the services of our scientific personnel, including Theodore (Ted) Ashburn, M.D., Ph.D., our President and Chief Executive Officer, Christophe Quéva, Ph.D., our Chief Scientific Officer and Senior Vice President, Research and John Goldberg, M.D., our Chief Medical Officer. We believe that their drug discovery and development experience and overall biopharmaceutical company management experience would be difficult to replace. Any of our executive officers could leave our employment at any time as all of our employees are “at-will” employees. We currently do not have “key person” insurance on any of our employees. The loss of the services of our other executive officers, key employees, and scientific and medical advisors, and our inability to find suitable replacements, could result in delays in our research and development objectives and harm our business.

Recruiting and retaining qualified employees, consultants and advisors for our business, including scientific and technical personnel, also will be critical to our success. Competition for skilled personnel is intense and the turnover rate can be high. We may not be able to attract and retain personnel on acceptable terms given the competition among numerous pharmaceutical and biotechnology companies and academic institutions for skilled individuals. In addition, failure to succeed in preclinical studies, clinical trials or applications for marketing approval may make it more challenging to recruit and retain qualified personnel. The inability to recruit, or the loss of services of certain executives, key employees, consultants or advisors, may impede the progress of our research, development and commercialization objectives and have a material adverse effect on our business, financial condition, results of operations and prospects.

We will need to continue to expand the size of our organization, and we may experience difficulties in managing this growth, which could disrupt our operations.

As of December 31, 2021, we had 82 employees, including 48 employees engaged in research and development. As our development and commercialization plans and strategies develop, we expect to need additional managerial, operational, sales, marketing, financial and other personnel. Future growth would impose significant added responsibilities on members of management, including:

Our future financial performance and our ability to progress our product candidates through clinical development and commercialization will depend, in part, on our ability to effectively manage any future growth, and our management may also have to divert a disproportionate amount of its attention away from day-to-day activities in order to devote a substantial amount of time to managing these growth activities.

We currently rely, and for the foreseeable future will continue to rely, in substantial part on certain independent organizations, advisors and consultants to provide certain services. The services include substantially all aspects of clinical trial management and, currently, manufacturing of clinical supply. The services of independent organizations, advisors and consultants may not be available to us on a timely basis when needed, or that we can find qualified replacements. In addition, if we are unable to effectively manage our outsourced activities or if the quality or accuracy of the services provided by consultants is compromised for any reason, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain marketing approval for our product candidates or otherwise advance our business. We cannot provide assurance that we will be able to manage our existing consultants or find other competent outside contractors and consultants on economically reasonable terms, or at all.

If we are not able to effectively expand our organization by hiring qualified new employees and expanding our groups of consultants and contractors, we may not be able to successfully implement the tasks necessary to further develop and commercialize ONCR-177 and our other product candidates and, accordingly, may not achieve our research, development and commercialization goals.

The COVID-19 pandemic and other public health crises could materially and adversely affect our business, including the conduct of preclinical studies and clinical trials and our manufacturing efforts.

In response to the COVID-19 pandemic, a number of governmental orders and other public health guidance measures have been implemented in 2020 across the United States, including in the locations of our office, clinical trial sites and third parties on whom we rely. Our clinical development timelines could be negatively affected by COVID-19, which could materially and adversely affect our business, financial condition and results of operations. Further, we have implemented a work-from-home policy allowing some employees who can work from home to do so, while also taking measures to reduce risks for those needing to work in our laboratory facilities. We continue to reassess our policies in this area in light of new guidance from the Centers for Disease Control, the World Health Organization, and federal, state and local authorities. Business travel has been limited, and online and teleconference technology is frequently used to meet virtually rather than in person. We have taken measures to secure our research and development project activities, while work in laboratories has been organized to reduce risk of COVID-19 transmission. Our increased reliance on personnel working from home may negatively impact productivity, or disrupt, delay or otherwise adversely impact our business. For example, with our personnel working from home, some of our research activities that require our personnel to be in our laboratories could be delayed.

As a result of the COVID-19 pandemic, or similar pandemics, and related governmental orders and other public health guidance measures, we have and may in the future experience disruptions that could materially and adversely impact our preclinical studies, clinical trials, business, financial condition and results of operations. Potential disruptions might include but are not limited to:

The COVID-19 global pandemic continues to rapidly evolve. The extent to which the pandemic may affect our preclinical activities, clinical trials, business, financial condition and results of operations will depend on future developments, which are highly uncertain and cannot be predicted at this time, such as the evolution and spread of virus variants, travel restrictions and actions to contain the outbreak of disease or treat its impact, such as social distancing and quarantines or lock-downs in the United States, business closures or business disruptions and the effectiveness of actions taken in the United States to contain and treat the disease, including mass vaccination efforts. Future developments in these and other areas present material uncertainty and risk with respect to our clinical trials, business, financial condition and results of operations.

If our information technology systems or sensitive information, or those of third parties upon which we rely, are or were compromised, we could experience adverse consequences resulting from such compromise, including but not limited to, regulatory investigations or actions, litigation, fines and penalties, disruptions of our business operations, reputational harm, loss of revenue or profits, and other adverse consequences.

We collect and maintain information in digital and other forms that is necessary to conduct our business, and we are increasingly dependent on information technology systems and infrastructure to operate our business. In the ordinary course of business, we collect, receive, store, process, generate, use, transfer, disclose, make accessible, protect, secure, dispose of, transmit, and share (collectively, processing) sensitive information, including personal data, proprietary and confidential business data, trade secrets, intellectual property, data we collect about trial participants in connection with clinical trials, and sensitive third-party data.

We have also outsourced elements of our information technology infrastructure, and as a result a number of third-party service providers may have access to our confidential information. We may rely upon third-party service providers and technologies to operate critical business systems to process sensitive information in a variety of contexts, including, without limitation, third-party providers of cloud-based infrastructure, encryption and authentication technology, employee email, content delivery to customers, and other functions. Our ability to monitor these third parties’ information security practices is limited, and these third parties may not have adequate information security measures in place.

Cyberattacks, malicious internet-based activity, and online and offline fraud are prevalent and continue to increase. These threats are becoming increasingly difficult to detect. These threats come from a variety of sources, including traditional computer “hackers,” threat actors, personnel (such as through theft or misuse), sophisticated nation states, and nation-state-supported actors. Some actors now engage and are expected to continue to engage in cyber-attacks, including, without limitation, nation-state actors for geopolitical reasons and in conjunction with military conflicts and defense activities. During times of war and other major conflicts, we and the third parties upon which we rely may be vulnerable to a heightened risk of these attacks, including cyber-attacks that could materially disrupt our systems and operations, supply chain, and ability to produce, sell and distribute our products. We and the third parties upon which we rely may be subject to a variety of evolving threats, including but not limited to computer viruses, malware, natural disasters, terrorism, war, telecommunication and electrical failures, software or hardware failures, loss of data or other information technology assets, adware, denial or degradation of service attacks, ransomware, hacking, phishing and other social engineering attacks, or intentional or accidental actions or omissions to act by persons inside our organization, or persons with access to systems inside our organization. Ransomware attacks, including by organized criminal threat actors, nation-states, and nation-state-supported actors, are becoming increasingly prevalent and severe and can lead to significant interruptions in our operations, loss of data and income, reputational harm, and diversion of funds. Extortion payments may alleviate the negative impact of a ransomware attack, but we may be unwilling or unable to make such payments due to, for example, applicable laws or regulations prohibiting such payments. Similarly, supply-chain attacks have increased in frequency and severity, and we cannot guarantee that third parties and infrastructure in our supply chain or our third-party partners’ supply chains have not been compromised or that they do not contain exploitable

defects or bugs that could result in a breach of or disruption to our information technology systems or the third-party information technology systems that support us.

In addition, the prevalent use of mobile devices that access confidential information increases the risk of security incidents, which could lead to the loss of sensitive information. Further, as a result of the COVID-19 pandemic, we may face increased risks of a security incident due to our reliance on internet technology and the number of our employees who are working remotely, which may create additional opportunities for cybercriminals to exploit vulnerabilities. Future or past business transactions (such as acquisitions or integrations) could also expose us to additional cybersecurity risks and vulnerabilities, as our systems could be negatively affected by vulnerabilities present in acquired or integrated entities’ systems and technologies.

Any of the previously identified or similar threats could cause a security incident or other interruption. A security incident or other interruption could result in unauthorized, unlawful, or accidental acquisition, modification, destruction, loss, alteration, encryption, disclosure of, or access to our sensitive information. A security incident or other interruption could disrupt our ability (and that of third parties upon whom we rely) to provide our products. We may expend significant resources or modify our business activities (including our clinical trial activities) to try to protect against security incidents.Certain data privacy and security obligations may require us to implement and maintain specific security measures, industry-standard or reasonable security measures to protect our information technology systems and sensitive information.

While we have implemented security measures to protect against security incidents, our efforts to address these problems may not be successful, and these problems could result in unexpected interruptions, delays, cessation of service, negative publicity, and other harm to our business, our reputation and our competitive position. If such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our product development programs. For example, the loss of clinical trial data from completed or ongoing or planned clinical trials could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. We may be unable in the future to detect vulnerabilities in our information technology systems because such threats and techniques change frequently, are often sophisticated in nature, and may not be detected until after a security incident has occurred. Despite our efforts to identify and remediate vulnerabilities, if any, in our information technology systems, our efforts may not be successful. Further, we may experience delays in developing and deploying remedial measures designed to address any such identified vulnerabilities.

Applicable data privacy and security obligations may require us to notify relevant stakeholders of security incidents. Such disclosures are costly, and the disclosure or the failure to comply with such requirements could lead to adverse consequences. If we (or a third party upon whom we rely) experience a security incident or are perceived to have experienced a security incident, we may experience adverse consequences. These consequences may include government enforcement actions (for example, investigations, fines, penalties, audits, and inspections), additional reporting requirements and/or oversight, restrictions on processing sensitive information (including personal data), litigation (including class claims), indemnification obligations, negative publicity, reputational harm, monetary fund diversions, interruptions in our operations (including availability of data), financial loss, and other similar harms. Security incidents and attendant consequences may cause customers to stop using our products or services, deter new customers from using our products or services, and negatively impact our ability to grow and operate our business.

Our contracts may not contain limitations of liability, and even where they do, there can be no assurance that limitations of liability in our contracts are sufficient to protect us from liabilities, damages, or claims related to our data privacy and security obligations. We cannot be sure that our insurance coverage will be adequate or sufficient to protect us from or to mitigate liabilities arising out of our privacy and security practices, that such coverage will continue to be available on commercially reasonable terms or at all, or that such coverage will pay future claims.

The market price of our common stock has been and is likely to continue to be volatile and fluctuate substantially.

Our stock price has been highly volatile since our IPO and particularly since we released preliminary data from our ongoing clinical trial of ONCR-177 in November 2021, and is likely to continue to be volatile. The stock market in general, and the markets for pharmaceutical, biopharmaceutical and biotechnology stocks in particular, have experienced extreme price and volume fluctuations that have been often unrelated or disproportionate to the operating performance of the issuer. In particular, the trading prices for pharmaceutical, biopharmaceutical and biotechnology companies have been highly volatile as a result of the impact of the COVID-19 pandemic and other market factors. The market price for our common stock may be influenced by many factors, including:

These and other market and industry factors may cause the market price and demand for our common stock to fluctuate substantially, regardless of our actual operating performance, which may limit or prevent investors from selling their shares at or above the price paid for the shares and may otherwise negatively affect the liquidity of our common stock.

Our quarterly operating results may fluctuate significantly or may fall below the expectations of investors or securities analysts, each of which may cause our stock price to fluctuate or decline.

We expect our operating results to be subject to quarterly fluctuations. Our net loss and other operating results will be affected by numerous factors, including:

If our quarterly operating results fall below the expectations of investors or securities analysts, the price of our common stock could decline substantially. Furthermore, any quarterly fluctuations in our operating results may, in turn, cause the price of our common stock to fluctuate substantially. We believe that quarterly comparisons of our financial results are not necessarily meaningful and should not be relied upon as an indication of our future performance.

We do not intend to pay dividends on our common stock so any returns will be limited to the value of our stock.

Investors should not rely on an investment in our common stock to provide dividend income. We currently anticipate that we will retain future earnings for the development, operation and expansion of our business and do not anticipate declaring or paying any cash dividends for the foreseeable future. Any return to stockholders will therefore be limited to the appreciation of their stock, which may never occur, as the only way to realize any return on their investment.

Concentration of ownership of our shares of our common stock among our executive officers, directors and principal stockholders may prevent new investors from influencing significant corporate decisions.

As of December 31, 2021, our directors, executive officers and holders of at least 5% of our outstanding common stock, including their respective affiliated persons and entities, together beneficially own a majority of our outstanding common stock. As a result, if this group were to act together, they would be able to control the outcome of matters requiring stockholder approval, including the election and removal of directors and approval of any merger, consolidation or sale of all or substantially all of our assets. The concentration of voting power and transfer restrictions could delay or prevent an acquisition of our company on terms that other stockholders may desire or result in the management of our company in ways with which other stockholders disagree.

Conflicts of interest may arise because some members of our board of directors are representatives of our principal stockholders.

Certain of our principal stockholders or their affiliates are venture capital funds or other investment vehicles that could invest in entities that directly or indirectly compete with us. As a result of these relationships, conflicts may arise between the interests of the principal stockholders or their affiliates and the interests of other stockholders, and members of our board of directors that are representatives of such principal stockholders may not be disinterested in such conflicts. Neither the principal stockholders nor the representatives of the principal stockholders on our board of directors, by the terms of our amended and restated certificate of incorporation, are required to offer us any transaction opportunity of which they become aware and could take any such opportunity for themselves or offer it their other affiliates, unless such opportunity is expressly offered to them solely in their capacity as members of our board of directors.

Sales of a substantial number of shares of our common stock in the public market could cause our stock price to fall, even if our business is doing well.

Sales of a substantial number of shares of our common stock in the public market could occur at any time. If our existing stockholders sell, or indicate an intention to sell, or the market perceives that our stockholders intend to sell, substantial amounts of our common stock in the public market, the market price of our common stock could decline significantly.

In addition, we have registered under the Securities Act shares that we may issue from time to time under our equity incentive plans, meaning that they can be freely sold in the public market upon issuance, subject to volume limitations applicable to our directors and officers. If any of these additional shares of common stock are sold, or if it is perceived that they will be sold, in the public market, the market price of our common stock could decline.

Furthermore, the holders of approximately 15.0 million shares of our common stock, or their permitted transferees, are entitled to rights with respect to the registration of their shares under the Securities Act. Registration of these shares under the Securities Act would result in the shares becoming freely tradable without restriction under the Securities Act, except for shares purchased by affiliates. Any sales of securities by these stockholders could have a material adverse effect on the market price of our common stock.

Provisions in our corporate charter and bylaws and Delaware law could make an acquisition of us, which may be beneficial to our stockholders, more difficult and may prevent attempts by our stockholders to replace or remove our current management.

Provisions in our corporate charter and our bylaws and provisions of Delaware law may discourage, delay or prevent a merger, acquisition or other change in control of us that stockholders may consider favorable, including transactions in which investors might otherwise receive a premium for their shares. These provisions also could limit the price that investors might be willing to pay in the future for shares of our common stock, thereby depressing the market price of our common stock. In addition, because our board of directors is responsible for appointing the members of our management team, these provisions may frustrate or prevent any attempts by our stockholders to replace or remove our current management by making it more difficult for stockholders to replace members of our board of directors. Among other things, these provisions:

Moreover, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporation Law, which prohibits a person who owns 15% or more of our outstanding voting stock from merging or combining with us for a period of three years after the date of the transaction in which the person acquired 15% or more of our outstanding voting stock, unless the merger or combination is approved in a prescribed manner. These provisions could discourage potential acquisition proposals and could delay or prevent a change in control transaction. They could also have the effect of discouraging others from making tender offers for our common stock, including transactions that may be in stockholders’ best interests. These provisions may also prevent changes in our management or limit the price that investors are willing to pay for our stock.

Our amended and restated certificate of incorporation provides that the Court of Chancery of the State of Delaware and the federal district courts of the United States of America will be the exclusive forums for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our amended and restated certificate of incorporation provides that the Court of Chancery of the State of Delaware will be the exclusive forum for the following types of actions or proceedings under Delaware statutory or common law:

This provision would not apply to suits brought to enforce a duty or liability created by the Exchange Act. Furthermore, Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all such Securities Act actions. Accordingly, both state and federal courts have jurisdiction to entertain such claims. To prevent having to litigate claims in multiple jurisdictions and the threat of inconsistent or contrary rulings by different courts, among other considerations, our amended and restated certificate of incorporation further provides that the federal district courts of the United States will be the exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act. While the Delaware courts have determined that such choice of forum provisions are facially valid, a stockholder may nevertheless seek to bring a claim in a venue other than those designated in the exclusive forum provisions. In such instance, we would expect to vigorously assert the validity and enforceability of the exclusive forum provisions of our amended and restated certificate of incorporation. This may require significant additional costs associated with resolving such action in other jurisdictions and there can be no assurance that the provisions will be enforced by a court in those other jurisdictions.

These exclusive forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage these types of lawsuits. If a court were to find either exclusive forum provision contained in our amended and restated certificate of incorporation to be inapplicable or unenforceable in an action, we may incur further significant additional costs associated with resolving such action in other jurisdictions, which could seriously harm our business.

Our employees, independent contractors, consultants, commercial partners, principal investigators, CMOs, or CROs may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements and insider trading, which could have a material adverse effect on our business.

We are exposed to the risk of employee fraud or other misconduct. Misconduct by employees, independent contractors, consultants, commercial partners, principal investigators, CMOs or CROs could include intentional, reckless, negligent, or unintentional failures to comply with FDA regulations, comply with applicable fraud and abuse laws, provide accurate information to the FDA, properly calculate pricing information required by federal programs, report financial information or data accurately or disclose unauthorized activities to us. This misconduct could also involve the improper use or misrepresentation of information obtained in the course of clinical trials, which could result in regulatory sanctions and serious harm to our reputation. It is not always possible to identify and deter this type of misconduct, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. Moreover, it is possible for a whistleblower to pursue a False Claims Act case against us even if the government considers the claim unmeritorious and/or declines to intervene, which could require us to incur costs defending against such a claim. In addition, we are subject to the risk that a person or government could allege such fraud or other misconduct, even if none occurred. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, financial condition, results of operations, stock price and prospects, including the imposition of significant civil, criminal and administrative penalties, damages, monetary fines, disgorgement, possible exclusion from participation in U.S. federal healthcare programs, integrity oversight and reporting obligations to resolve allegations of non-compliance, imprisonment, contractual damages, reputational harm, diminished profits and future earnings, and curtailment of our operations.

We face potential product liability exposure, and if successful claims are brought against us, we may incur substantial liability and have to limit the commercialization of any approved products and/or our product candidates.

The use of our product candidates in clinical trials, and the sale of any product for which we obtain regulatory approval, exposes us to the risk of product liability claims. We face inherent risk of product liability related to the testing of our product candidates in human clinical trials, including liability relating to the actions and negligence of our investigators, and will face an even greater risk if we commercially sell any product candidates that we may develop. For example, we may be sued if any product candidate we develop allegedly causes injury or is found to be otherwise unsuitable during clinical testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability or a breach of warranties. Claims could also be asserted under state consumer protection acts. Product liability claims might be brought against us by consumers, healthcare providers or others using, administering or selling our products. If we cannot successfully defend ourselves against these claims, we will incur substantial liabilities or be required to limit commercialization of our product candidates. Even successful defense would require significant financial and management resources. Regardless of merit or eventual outcome, liability claims may result in:

We believe we have sufficient insurance coverage in place for our business operations. However, our insurance coverage may not reimburse us or may not be sufficient to reimburse us for any expenses or losses we may suffer. Moreover, insurance coverage is becoming increasingly expensive, and, in the future, we may not be able to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us against losses due to liability. We intend to expand our insurance coverage to include clinical trials and the sale of commercial products if we obtain FDA or comparable foreign regulatory approval for our product candidates in development, but we may be unable to obtain commercially reasonable product liability insurance for any products approved for marketing, or at all. Failure to obtain and retain sufficient product liability insurance at an acceptable cost could prevent or inhibit the

commercialization of products we develop. On occasion, large judgments have been awarded in class action lawsuits based on therapeutics that had unanticipated side effects. A successful product liability claim or series of claims brought against us could cause our stock price to fall and, if judgments exceed our insurance coverage, could decrease our cash, and materially harm our business, financial condition, results of operations, stock price and prospects.

In the past, securities class action litigation has often been brought against public companies following declines in the market prices of their securities. This risk is especially relevant for biopharmaceutical companies, which have experienced significant stock price volatility in recent years. If we face such litigation, it could result in substantial costs and a diversion of management’s attention and our resources, which could harm our business.

If securities analysts do not publish research or reports about our business or if they publish negative evaluations of our stock, the price of our stock could decline.

The trading market for our common stock is and will rely, in part, on the research and reports that industry or financial analysts publish about us or our business. If one or more of the analysts who currently cover our business downgrade their evaluations of our business, or in the event we obtain additional coverage and one or more of the new analysts issues an adverse evaluation of our business, the price of our stock could decline. If one or more of these analysts cease to cover our stock, we could lose visibility in the market for our stock, which in turn could cause our stock price to decline.

We will continue to incur significantly increased costs as a result of operating as a public company, and our management will be required to devote substantial time to new compliance initiatives and corporate governance practices.

As a public company, and particularly after we are no longer an emerging growth company, we will incur significant legal, accounting and other expenses that we did not incur as a private company. The Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act, Nasdaq listing requirements and other applicable securities rules and regulations impose various requirements on public companies, including establishment and maintenance of effective disclosure and financial controls and corporate governance practices. Our management and other personnel will need to devote a substantial amount of time to these compliance initiatives. Moreover, we expect these rules and regulations to substantially increase our legal and financial compliance costs and to make some activities more time consuming and costly. For example, we expect that these rules and regulations may make it more difficult and more expensive for us to obtain and maintain director and officer liability insurance and we may be required to incur substantial costs to maintain sufficient coverage. We cannot predict or estimate the amount or timing of additional costs we may incur to respond to these requirements. The impact of these requirements could also make it more difficult for us to attract and retain qualified persons to serve on our board of directors, our board committees or as executive officers. The increased costs may require us to reduce costs in other areas of our business or increase the prices of our services. Moreover, these rules and regulations are often subject to varying interpretations, in many cases due to their lack of specificity, and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies. This could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices.

We are an “emerging growth company” and a “smaller reporting company” and we cannot be certain if the reduced reporting requirements applicable to emerging growth companies or smaller reporting companies will make our common stock less attractive to investors.

We are an “emerging growth company” as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. For as long as we continue to be an emerging growth company, we may take advantage of exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies, including (i) not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act of 2002, as amended, or the Sarbanes-Oxley Act, (ii) reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements and (iii) exemptions from the requirements of holding nonbinding advisory stockholder votes on executive compensation and stockholder approval of any golden parachute payments not approved previously. In addition, as an emerging growth company, we are only required to provide two years of audited financial statements in this report. Under the JOBS Act, emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards apply to private companies. We have elected to take advantage of the benefits of this extended transition period. Our consolidated financial statements may therefore not be comparable to those of companies that comply with such new or revised accounting standards. Until the date that we are no longer an “emerging growth company” or affirmatively and irrevocably opt out of the exemption provided by Section 7(a)(2)(B) of the Securities Act, upon issuance of a new or revised accounting standard that applies to our consolidated financial statements and that has a different effective date for public and private companies, we will disclose the date on which adoption is required for non-emerging growth companies and the date on which we will adopt the recently issued accounting standard.

We could be an emerging growth company until December 31, 2025, although circumstances could cause us to lose that status earlier, including if we are deemed to be a “large accelerated filer,” which occurs when the market value of our common stock that is held by non-affiliates equals or exceeds $700.0 million as of the prior June 30, or if we have total annual gross revenue of $1.07 billion or more during any fiscal year before that time, in which cases we would no longer be an emerging growth company as of the following December 31, or if we issue more than $1.0 billion in non-convertible debt during any three-year period before that time, in which

case we would no longer be an emerging growth company immediately. Even after we no longer qualify as an emerging growth company, we may still qualify as a “smaller reporting company,” which would allow us to take advantage of many of the same exemptions from disclosure requirements, including not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act and reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements.

We cannot predict if investors will find our common stock less attractive because we may rely on the exemptions and reduced disclosure obligations applicable to emerging growth companies and smaller reporting companies. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our share price may be more volatile.

Our disclosure controls and procedures may not prevent or detect all errors or acts of fraud.

We are subject to the periodic reporting requirements of the Exchange Act and must design our disclosure controls and procedures to reasonably assure that information we must disclose in reports we file or submit under the Exchange Act is accumulated and communicated to management, and recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. We believe that any disclosure controls and procedures or internal controls and procedures, no matter how well-conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of simple error or mistake. For example, our directors or executive officers could inadvertently fail to disclose a new relationship or arrangement causing us to fail to make a required related party transaction disclosure. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people or by an unauthorized override of the controls. Accordingly, because of the inherent limitations in our control system, misstatements due to error or fraud may occur and not be detected.

If we fail to maintain proper and effective internal controls over financial reporting our ability to produce accurate and timely financial statements could be impaired.

Pursuant to Section 404 of the Sarbanes-Oxley Act, our management is required to report upon the effectiveness of our internal control over financial reporting, effective as of this Annual Report on Form 10-K. When we lose our status as an emerging growth company and a smaller reporting company, our independent registered public accounting firm will be required to attest to the effectiveness of our internal control over financial reporting. The rules governing the standards that must be met for management to assess our internal control over financial reporting are complex and require significant documentation, testing and possible remediation. To comply with the requirements of being a reporting company under the Securities Exchange Act of 1934, as amended, or the Exchange Act, we will need to implement additional financial and management controls, reporting systems and procedures and hire additional accounting and finance staff.

We cannot provide assurance that there will not be material weaknesses in our internal control over financial reporting in the future. Any failure to maintain internal control over financial reporting could severely inhibit our ability to accurately report our financial condition, results of operations or cash flows. If we are unable to conclude that our internal control over financial reporting is effective, or if our independent registered public accounting firm determines we have a material weakness in our internal control over financial reporting, investors may lose confidence in the accuracy and completeness of our financial reports, the market price of our common stock could decline, and we could be subject to sanctions or investigations by Nasdaq, the SEC or other regulatory authorities. Failure to remedy any material weakness in our internal control over financial reporting, or to implement or maintain other effective control systems required of public companies, could also restrict our future access to the capital markets.

Our principal office is located in Cambridge, Massachusetts, where we lease approximately 17,800 square feet of office and laboratory space under a lease that terminates in January 2024.

In December 2020, we entered into a lease agreement for approximately 88,000 square feet of manufacturing and office space in Andover, Massachusetts to support our advancing pipeline of product candidates. In November 2021, we entered into an amendment to our lease to increase the existing footprint of the facility to a total of approximately 105,000 square feet. We began process development activities at the facility in the second half of 2021 and we expect the facility to be operational in late 2022. The lease terminates in December 2036, unless earlier terminated in accordance with its terms. Our total lease commitment is expected to be approximately $85 million over the 15-year term. We have two options to extend the term of the lease for the entire premises for a period of 10 years each.

We believe that suitable additional or substitute space will be available as needed and on commercially reasonable terms to accommodate any future expansion of operations.

From time to time, we may be involved in various other claims and legal proceedings relating to claims arising out of our operations. We are not currently a party to any material legal proceedings.

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

Our common stock is listed on the Nasdaq Global Market under the symbol “ONCR”. Trading of our common stock commenced on October 6, 2020, following the completion of our initial public offering. Prior to that time, there was no established public trading market for our common stock.

As of March 1, 2022, there were approximately 43 stockholders of record of our common stock. This number does not include beneficial owners whose shares are held in street name.

We have never declared or paid a cash dividend on our common stock and do not anticipate paying any cash dividends in the foreseeable future.

On October 1, 2020, our Registration Statement on Form S-1, as amended (File No. 333-248757) was declared effective in connection with the IPO of our common stock, pursuant to which we registered an aggregate of 6,670,000 shares of our common stock, of which we sold 6,557,991 shares, including the partial exercise of the underwriters’ option to purchase additional shares, at a price to the public of $15.00 per share. The offering closed on October 6, 2020, and, as a result, we received net proceeds of $88.3 million (after deducting underwriters’ discounts and commissions of $6.9 million and additional offering related costs of $3.2 million).

We anticipate that we will use the net proceeds from the IPO to advance our clinical programs, including ONCR-177, to fund our preclinical programs, to expand our manufacturing capabilities and for working capital and general corporate purposes, which may include capital expenditures, other corporate expenses and acquisitions of complementary technologies or assets. We currently have no agreements or commitments with respect to acquisitions of complementary technologies or assets. The timing and amount of our actual expenditures will be based on many factors, including cash flows from operations.

We intend to invest the net proceeds in a variety of short-term, interest-bearing, investment grade securities. There has been no material change in the planned use of proceeds from our IPO from that described in the final prospectus filed by us with the Securities and Exchange Commission pursuant to Rule 424(b) on October 2, 2020.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis of financial condition and results of operations is provided to enhance the understanding of, and should be read in conjunction with Part I, Item 1, “Business” and Item 8, ‘Financial Statements and Supplementary Data.” For information on risks and uncertainties related to our business that may make past performance not indicative of future results or cause actual results to differ materially from any forward-looking statements, see “Special Note Regarding Forward-Looking Statements,” and Part I, Item 1A, ‘Risk Factors.”

Our Management’s Discussion and Analysis of Financial Condition and Results of Operations, or MD&A, is provided in addition to the accompanying consolidated financial statements and notes to assist readers in understanding our results of operations, financial condition, and cash flows. MD&A is organized as follows:

Overview - A discussion of our business and overall analysis of financial and other highlights in order to provide context for the remainder of MD&A.

Results of Operations - An analysis of our financial results comparing the year ended December 31, 2021 to the year ended December 31, 2020.

Liquidity and Capital Resources - An analysis of changes in our consolidated balance sheets and cash flows, and discussion of our financial condition and potential sources of liquidity.

Critical Accounting Policies and Significant Judgments and Estimates - A discussion of critical accounting policies and those that require us to make subjective estimates and judgments.

We are a clinical-stage biopharmaceutical company focused on developing next-generation viral immunotherapies to transform outcomes for cancer patients. Using our two distinct proprietary platforms, we are developing a pipeline of intratumorally- and intravenously-administered product candidates designed to selectively attack and kill tumor cells and deliver transgenes to stimulate multiple arms of the immune system against tumors. Our lead product candidate, ONCR-177, is an intratumorally-administered viral immunotherapy based on our oncolytic HSV-1 platform, referred to as our HSV Platform, which leverages the Herpes Simplex Virus-1, or HSV-1, a virus which has been clinically proven to effectively treat certain cancers. Utilizing this proprietary platform, we are engineering our product candidates, such as ONCR-177, to carry greater numbers of immunostimulatory transgenes than viral immunotherapies that are either currently approved or in clinical development. These transgenes are designed to drive strong systemic anti-tumor immunity to elicit tumor responses at injected and distant non-injected tumor sites, or abscopal activity. In addition, viruses from our HSV Platform maintain full viral replication competency in tumors and are designed to be selectively attenuated in normal tissues. We believe this unique combination of features allows us to break the safety versus potency trade-off that has generally limited the viral immunotherapy field to date.

We have initiated enrollment in the surface lesion dose combination expansion (ONCR-177 administered in combination with Merck's KEYTRUDA® (pembrolizumab)) portion of the clinical trial. We plan to report additional surface lesion monotherapy expansion data and initial surface lesion combination expansion data in the second half of 2022.

We have additional preclinical stage HSV programs addressing both intratumoral and intravenous, or IV, solutions to other unmet medical needs, including a program designed to target brain cancer through intratumoral injection, which we refer to as ONCR-GBM.

We are also developing a broad pipeline of product candidates that leverages our second platform, which we refer to as our selectively self-amplifying viral RNA, or vRNA, Immunotherapy Platform, to enable repeat IV administration of viral immunotherapies in order to treat cancers that are less amenable to intratumoral injection due to safety and feasibility reasons. Our two candidates from this platform are ONCR-021 and ONCR-788. Our IV-administered approach involves encapsulating the genomes of RNA viruses known to kill cancer cells in a lipid nanoparticle, or LNP, creating a selectively self-amplifying vRNA immunotherapy. ONCR-021 encodes

an optimized strain of Coxsackievirus A21, or CVA21, and ONCR-788 encodes for a modified version of the Seneca Valley Virus, or SVV. Both CVA21 and SVV have extensive clinical experience and favorable safety profiles when administered IV. We believe our selectively self-amplifying vRNA Immunotherapy Platform holds the potential for IV administration and avoids the challenge of neutralizing antibodies seen in previous approaches with IV-administered oncolytic viruses. We plan to investigate the novel therapies from our vRNA Immunotherapy Platform in multiple histologies including cancers of the lung both as monotherapy and in combination with immune checkpoint inhibitors and other cancer treatments. We plan to submit an investigational new drug application, or IND, for ONCR-021 in mid-2023 to enable clinical development for non-small cell lung cancer and other cancers such as clear cell renal cell carcinoma and melanoma, both as a single agent and in combination with immune checkpoint inhibitors. Following the IND submission for ONCR-021 and pending further resources, we plan to submit an IND for ONCR-788 to enable its development in small cell lung cancer, neuroendocrine prostate and other neuroendocrine cancers, both as a single agent and in combination with immune checkpoint inhibitors and other cancer treatments. In the process of developing ONCR-021 and ONCR-788, we also developed a proprietary LNP platform for delivery of large nucleic acids, with efficient endosomal escape.

We plan to manufacture certain product candidates at our 105,000 square foot manufacturing facility in Andover, Massachusetts, 41,000 of which is specifically dedicated to GMP-compliant processes. We began process development activities at the facility in 2021 and we anticipate this facility will be operational in late 2022.

Since inception, our operations have focused on organizing and staffing our company, business planning, raising capital, acquiring and developing our technology, establishing our intellectual property portfolio, identifying potential product candidates and undertaking preclinical studies, commencing a clinical trial and manufacturing scale-up activities. We do not have any products approved for sale and have not generated any revenue from product sales.

We have funded our operations primarily through the sale of redeemable convertible preferred stock, including Series A-1 redeemable convertible preferred stock, or Series A-1, and Series B redeemable convertible preferred stock, or Series B, our initial public offering, or IPO, of our common stock and a follow-on public offering, or the Follow-on Offering, of our common stock. In 2019, we conducted a Series B financing, in which the funding occurred in two separate tranches. We closed the first tranche of the Series B in 2019, raising $53.8 million of aggregate gross proceeds. In September 2020, we achieved the clinical development milestones that triggered the second and final tranche of the Series B financing, and as a result, we received an additional $35.8 million of gross proceeds. In October 2020, we completed our IPO, in which we issued an aggregate of 6,557,991 shares of common stock for aggregate net proceeds of $88.3 million, after deducting underwriting discounts and commissions and offering expenses payable by us. Our shares of common stock began trading on the Nasdaq Global Market under the ticker symbol “ONCR” on October 2, 2020. Upon closing of our IPO, all outstanding shares of Series A-1 and Series B converted into an aggregate of 14,951,554 shares of common stock. In February 2021, we completed the Follow-on Offering in which we issued 3,000,000 shares of common stock for aggregate net proceeds of $53.0 million, after deducting underwriting discounts and commissions and offering expenses of $4.0 million.

From inception through December 31, 2021, we have raised an aggregate of $306.3 million of gross proceeds through the issuance of redeemable convertible preferred stock, our IPO and the Follow-on Offering.

We will need substantial additional funding to support our continuing operations and pursue our growth strategy. Until we can generate significant revenue from product sales, if ever, we expect to finance our operations through a combination of public or private equity offerings and debt financings or other sources, such as potential collaboration agreements, strategic alliances and licensing arrangements. We may be unable to raise additional funds or enter into such other agreements or arrangements when needed on acceptable terms, or at all. Our failure to raise capital or enter into such agreements as, and when needed, could have a material adverse effect on our business, results of operations and financial condition.

As of December 31, 2021, we had cash and cash equivalents and investments of $123.9 million. We believe that our existing cash and cash equivalents and investments will enable us to fund our operating expenses and capital expenditure requirements into late 2023.

In response to the COVID-19 pandemic, we implemented a work-from-home policy allowing employees who can work from home to do so. We are in the process of transitioning back to in-office work for the majority of our employees. We have taken measures to secure our research and development project activities, while work in laboratories has been organized to reduce risk of COVID-19 transmission. Business travel was previously suspended but is now limited, and online and teleconference technology continues to be used regularly. We continue to monitor health guidance measures and may adjust our plans based upon the status of the pandemic.

Research and development expenses consist primarily of costs incurred for our research and development activities, including our product candidate discovery efforts, preclinical and clinical studies under our research programs, which include:

Research and development costs are expensed as incurred. Costs for certain activities are recognized based on an evaluation of the progress to completion of specific tasks using data such as information provided to us by our vendors and analyzing the progress of our preclinical and clinical studies or other services performed. Significant judgment and estimates are made in determining the accrued expense balances at the end of any reporting period.

We track external research and development costs on a program-by-program basis beginning, with respect to each program, upon our internal nomination of a candidate in that program for further preclinical and clinical development. For example, ONCR-021 and ONCR-788 were both nominated as candidates in May 2021, at which time we began tracking their external research and development costs. External costs include fees paid to consultants, contractors and vendors, including contract manufacturing organizations, or CMOs, and clinical research organizations, or CROs, in connection with our preclinical, clinical and manufacturing activities and license milestone payments related to candidate development. We do not allocate employee costs, costs associated with our discovery efforts, costs incurred for laboratory supplies, and facilities, including depreciation, or other indirect costs, to specific product development programs because these costs are deployed across multiple product development programs and, as such, are not separately classified.

The successful development of our product candidates is highly uncertain. We cannot reasonably estimate or know the nature, timing, and estimated costs of the efforts that will be necessary to complete development of our current or future product candidates. We are also unable to predict when, if ever, material net cash inflows will commence from the sale of our product candidates, if they are approved. This is due to the numerous risks and uncertainties associated with developing product candidates, including the uncertainty of:

A change in the outcome of any of these variables with respect to the development of our current and future product candidates would significantly change the costs and timing associated with the development of those product candidates.

Research and development activities are central to our business model. Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials. We expect research and development costs to increase significantly for the foreseeable future as we commence and continue clinical trials and continue the development of our current and future product candidates. However, we do not believe that it is possible at this time to accurately project expenses through commercialization. There are numerous factors associated with the successful commercialization of any of our product candidates, including future trial design and various regulatory requirements, many of which cannot be determined with accuracy at this time based on our stage of development. Additionally, future commercial and regulatory factors beyond our control will impact our clinical development programs and plans.

General and administrative expenses include salaries, bonuses, benefits and other compensation-related costs, including stock-based compensation, for personnel in executive, finance and accounting, business development, operations and administrative roles. Other significant costs include professional service and consulting fees including legal fees relating to intellectual property and corporate matters, audit and tax fees, insurance costs, recruiting costs and costs for consultants who we utilize to supplement our personnel. General and administrative expenses also include travel costs, and facility, office-related costs and depreciation and amortization that are not included in research and development expenses.

We anticipate that our general and administrative expenses will increase in the future as our business expands to support expected growth in research and development activities, including our future clinical programs. These increases will likely include increased costs related to the hiring of additional personnel and fees to outside service providers, among other expenses. We also anticipate increased expenses associated with being a public company, including costs for audit, legal, regulatory and tax-related services related to compliance with the rules and regulations of the Securities and Exchange Commission, or the SEC, and listing standards applicable to companies listed on a national securities exchange, director and officer insurance premiums, and investor relations costs. In addition, if we obtain regulatory approval for any of our product candidates and do not enter into a third-party commercialization collaboration, we expect to incur significant expenses related to building a sales and marketing team to support product sales, marketing and distribution activities.

Other income (expense) primarily includes changes in fair value of the Series B tranche rights and interest income. Included in the terms of the Series B stock purchase agreement in August 2019 were tranche rights granted to the holders of the Series B. The tranche rights provided the Series B holders with the right to purchase additional shares of Series B in an additional tranche under certain events. The tranche rights met the definition of a freestanding financial instrument as the tranche rights were legally detachable and separately exercisable from the Series B. The tranche rights were initially recorded at fair value as a liability on our consolidated balance sheet. The tranche rights were subsequently re-measured at fair value at the end of each reporting period and at settlement, which occurred in September 2020, when the second and final tranche of the Series B financing closed. Changes in the fair value were recognized as a component of other income (expense) in the year ended December 31, 2020.

Interest income primarily consists of interest income from our cash and cash equivalents and investments.

The following table summarizes our results of operations for the periods indicated.

The table below summarizes our research and development expenses by product candidate or development program and unallocated research and development expenses for each of the periods presented:

Research and development expenses increased from $27.2 million for the year ended December 31, 2020 to $44.7 million for the year ended December 31, 2021. The increase of $17.5 million, or 65%, was primarily the result of:

General and administrative expenses increased from $10.0 million for the year ended December 31, 2020 to $20.1 million for the year ended December 31, 2021. The increase of $10.1 million, or 101%, was primarily the result of:

Other income (expense) for the year ended December 31, 2021 improved by $11.2 million compared to the year ended December 31, 2020. We recognized a $11.3 million loss associated with the change in fair value of the Series B tranche rights in year ended December 31, 2020. Since the Series B tranche rights were settled in September 2020, no loss was recognized in the year ended December 31, 2021.

From inception through December 31, 2021, we funded our operations with gross proceeds of $306.3 million from sales of our redeemable convertible preferred stock, our IPO and our Follow-on-Offering. As of December 31, 2021, our cash and cash equivalents and investments totaled $123.9 million.

Net cash used in operating activities for the year ended December 31, 2021 was $49.8 million and was primarily related to our net loss for the period of $64.8 million, partially offset by non-cash charges consisting of depreciation and amortization of $2.0 million and stock-based compensation expense of $6.6 million. Our net cash used in operating activities also included a net source of cash of $6.4 million related to changes in operating assets and liabilities as follows:

Net cash used in operating activities for the year ended December 31, 2020 was $36.8 million and was primarily related to our net loss for the period of $48.3 million, partially offset by non-cash activity consisting of an $11.3 million decrease in the fair value of the Series B tranche rights liability, stock-based compensation expense of $1.7 million, and depreciation and amortization of $1.4 million. Our net cash used in operating activities also included a net use of cash of $2.9 million related to changes in operating assets and liabilities as follows:

Net cash used in investing activities for the year ended December 31, 2021 and 2020 was $32.7 million and $1.1 million, respectively. The net cash used in investing activities in 2021 was associated with cash used to purchase investments of $23.2 million and leasehold improvements and purchases of laboratory equipment for our Andover facility of approximately $9.6 million. The net cash used in investing activities in 2020 was related to leasehold improvements and purchases of laboratory equipment for our Cambridge facility.

Net cash provided by financing activities for the year ended December 31, 2021 was $53.6 million and primarily consisted of net proceeds from our Follow-on Offering. Net cash provided by financing activities for the year ended December 31, 2020 was $125.8 million. We closed the first tranche of the Series B financing in 2019. In 2020, we achieved the clinical development milestones that triggered the second and final tranche of the Series B financing, and as a result we received an additional $35.8 million of gross proceeds. In 2020, we also completed the IPO, which provided net proceeds of $89.8 million. This amount of net proceeds from the IPO excludes $1.5 million of legal and accounting costs that were expensed in 2019 and subsequently paid, due to the delayed timing of the IPO. Taking into account these previously expensed amounts, we received $88.3 million of aggregate net proceeds from the IPO.

We expect our expenses to increase in connection with our ongoing activities, particularly as we continue our research and development, initiate clinical trials, build out our manufacturing facility and seek marketing approval for our current and any of our future product candidates. In addition, if we obtain marketing approval for any of our current or our future product candidates, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing and distribution, which costs we may seek to offset through entry into collaboration agreements with third parties. Furthermore, we expect to incur additional costs associated with operating as a public company. Accordingly, we will need to obtain substantial additional funding in connection with our continuing operations. If we are unable to raise capital when needed or on acceptable terms, we would be forced to delay, reduce or eliminate our research and development programs or future commercialization efforts.

We believe that our existing cash and cash equivalents and investments will enable us to fund our operating expenses and capital expenditure requirements into late 2023. We have based this estimate on assumptions that may prove to be wrong, and we may use our available capital resources sooner than we currently expect. Our future capital requirements will depend on a number of factors, including:

Our existing cash and cash equivalents and investments will not be sufficient to complete development of ONCR-177 or any other product candidate. Accordingly, we will be required to obtain further funding to achieve our business objectives.

Until such time, if ever, as we can generate substantial product revenues, we expect to finance our cash needs through a combination of public or private equity offerings and debt financings or other sources, such as potential collaboration agreements, strategic alliances and licensing arrangements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interests of existing stockholders may be diluted, and the terms of these securities may include liquidation or other preferences that could adversely affect the rights of common stockholders. Additional debt financing, if available, may involve agreements that include restrictive covenants that limit our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends, that could adversely impact our ability to conduct our business.

If we raise funds through potential collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates, or to grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

This Management’s Discussion and Analysis of Financial Condition and Results of Operations is based on our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP. The preparation of these consolidated financial statements requires us to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the consolidated balance sheets and the reported amounts of revenue and expenses during the reporting periods. In accordance with GAAP, we base our estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances at the time such estimates are made. Actual results may differ materially from our estimates and judgments under different assumptions or conditions. We periodically review our estimates in light of changes in circumstances, facts and experience. The effects of material revisions in estimates are reflected in our consolidated financial statements prospectively from the date of the change in estimate.

We define our critical accounting policies as those accounting principles that require us to make subjective estimates and judgments about matters that are uncertain and are likely to have a material impact on our financial condition and results of operations, as well as the specific manner in which we apply those principles. While our significant accounting policies are more fully described in Note 2 to our audited consolidated financial statements appearing elsewhere in this Annual Report on Form 10-K, we believe the following are the critical accounting policies used in the preparation of our consolidated financial statements that require significant estimates and judgments.

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued expenses as of each balance sheet date. This process involves reviewing open contracts and purchase orders, communicating with our personnel to identify services that have been performed on our behalf, and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of the actual cost. The majority of our service providers invoice us monthly in arrears for services performed or when contractual milestones are met. We make estimates of our accrued expenses as of each balance sheet date based on facts and circumstances known to us at that time. We periodically confirm the accuracy of our estimates with the service providers and make adjustments if necessary.

The significant estimates in our accrued research and development expenses include the costs incurred for services performed by our vendors in connection with research and development activities for which we have not yet been invoiced. We base our expenses related to research and development activities on our estimates of the services received and efforts expended pursuant to quotes and contracts with vendors that conduct research and development on our behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to our vendors will exceed the level of services provided and result in a prepayment of the research and development expense.

In accruing service fees, we estimate the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the accrual or prepaid balance accordingly. Non-refundable advance payments for goods and services that will be used in future research and development activities are expensed when the activity has been performed or when the goods have been received rather than when the payment is made.

Although we do not expect our estimates to be materially different from amounts incurred, if our estimates of the status and timing of services performed differ from the actual status and timing of services performed, it could result in us reporting amounts that are too high or too low in any particular period.

We measure stock options and other stock-based awards granted to employees and directors based on the fair value of the award on the date of the grant and recognize compensation expense for those awards over the requisite service period, which is generally the vesting period of the respective award.

Prior to the IPO, because there was no public market for our common stock as a private company, our board of directors determined the fair value of common stock by considering a number of objective and subjective factors, including having contemporaneous and retrospective valuations of our equity performed by a third-party valuation specialist, valuations of comparable peer public companies, sales of redeemable convertible preferred stock, operating and financial performance, the lack of liquidity of our common stock, and general and industry-specific economic outlook. Following our IPO, the closing sale price per share of our common stock as reported on The Nasdaq Global Market on the date of grant is used to determine the fair value of our share-based awards.

We estimate the fair value of stock option awards granted using the Black-Scholes option-pricing model, which uses as inputs the fair value of our common stock and subjective assumptions we make, including expected stock price volatility, the expected term of the award, the risk-free interest rate, and expected dividends. Due to the lack of an extended trading history of our common stock and a lack of company-specific historical and implied volatility data, we base the estimate of expected stock price volatility on the historical volatility of a representative group of publicly traded companies for which historical information is available. The historical volatility is generally calculated based on a period of time commensurate with the expected term assumption. We use the simplified method to calculate the expected term for options granted to employees and directors. We utilize this method as we do not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term. For options granted to non-employees, we utilize the contractual term. The risk-free interest rate is based on a U.S. treasury instrument whose term is consistent with the expected term of the stock options. The expected dividend yield is assumed to be zero, as we have never paid dividends and do not have current plans to pay any dividends on our common stock.

We determine the fair value of restricted common stock awards based on the fair value of our common stock on the date of grant.

The following table summarizes our significant contractual obligations as of December 31, 2021:

On December 29, 2020, we entered into a lease agreement, or the Lease, for approximately 33,518 square feet, or the Pod 4 Portion, and approximately 54,666 square feet, or the Pod 5 Portion, of a manufacturing facility located in Andover, Massachusetts. The Lease contains a free rent period for each of the Pod 4 Portion and the Pod 5 Portion. The term of the Lease will continue for 15 years from the date the monthly rent for the Pod 5 Portion commences, or approximately December 31, 2036, unless earlier terminated in accordance with the terms of the Lease. We have two options to extend the term of the Lease for the entire premises for a period of 10 years each, with rent during the extended term being based on the then-prevailing market rental rate.

Under the Lease, the monthly rent payments for the Pod 4 Portion commenced on October 1, 2021, reflecting an approximately nine-month rent-free period following the execution of the Lease. Beginning on the Pod 4 rent commencement date, we began making monthly base rent payments, which are approximately $0.1 million per month and will increase to approximately $0.2 million per month during the term of the Lease. The monthly rent payments for the Pod 5 Portion are expected to commence on January 1, 2022, reflecting an approximately one-year rent-free period following the execution of the Lease. Beginning on the Pod 5 rent commencement date, we will be obligated to make monthly base rent payments, which will initially be approximately $0.2 million per month and will increase to approximately $0.3 million per month during the term of the Lease. We were also required to provide the landlord with a $2.9 million letter of credit as support for our obligations under the Lease. The total lease commitment under this Lease is expected to be approximately $72.0 million over the 15-year term.

In November 2021, we entered into an amendment the Lease. The amendment increased the existing footprint of the facility by approximately 17,150 square feet, or the Pod 3 Portion. The term of the overall Lease remained unchanged and rent payments for the Pod 3 Portion are expected to commence on July 1, 2022. Beginning on the Pod 3 commencement date, we will be obligated to make monthly base rent payments, which will be approximately $0.1 million for the duration of the term of the lease. In connection with this amendment, we agreed to provide the landlord an increase of $0.5 million to the letter of credit as support for its obligations under the Lease, bringing the total amount of the letter of credit to $3.4 million. The total lease commitment under this amendment is expected to be $13.3 million over the 15-year term.

We enter into agreements in the normal course of business with vendors for preclinical and clinical studies, preclinical and clinical supply and manufacturing services, professional consultants for expert advice, and other vendors for other services for operating purposes. We have not included these payments in the table of contractual obligations above since the contracts do not contain any minimum purchase commitments and are cancelable at any time by us, generally upon 30 days prior written notice, and therefore we believe that our non-cancelable obligations under these agreements are not material.

In addition, we have entered into license and royalty agreements for intellectual property with certain parties. Such arrangements require ongoing payments, including payments upon achieving certain development, regulatory and commercial milestones, receipt of sublicense income, as well as royalties on commercial sales. Payments under these arrangements are expensed as incurred and are recorded as research and development expenses. We paid amounts under such agreements at the time of execution and pay annual fees. Upon the dosing of patients in our Phase 1 clinical trial for ONCR-177, certain payments came due. We have not included the annual license fee payments in the table of contractual obligations above because the license agreements are cancelable by us and therefore, we believe that our non-cancelable obligations under these agreements are not material. We have not included potential royalties or milestone obligations in the table above because they are contingent upon the occurrence of future events and the timing and likelihood of such potential obligations are not known with certainty.

Please also refer to Note 12, Leases and Note 13, Commitments and Contingencies for further discussion around our contractual obligations.

We are an ‘‘emerging growth company,’’ or EGC, under the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. Section 107 of the JOBS Act provides that an EGC can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act for complying with new or revised accounting standards. Thus, an EGC can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to avail ourselves of the delayed adoption of new or revised accounting standards and, therefore, we will be subject to the same requirements to adopt new or revised accounting standards as private entities.

As an EGC, we may also take advantage of certain exemptions and reduced reporting requirements under the JOBS Act. Subject to certain conditions, as an EGC:

We will remain an EGC until the earliest of (i) December 31, 2025, (ii) the last day of the fiscal year in which we have total annual gross revenues of $1.07 billion or more, (iii) the date on which we have issued more than $1 billion in non-convertible debt during the previous rolling three-year period, or (iv) the date on which we are deemed to be a large accelerated filer under the Securities Exchange Act of 1934, as amended, or the Exchange Act.

We are also a ‘‘smaller reporting company,’’ meaning that the market value of our stock held by non-affiliates plus the proposed aggregate amount of gross proceeds to us as of the date of our initial public offering is less than $700 million and our annual revenue was less than $100 million during the most recently completed fiscal year. We may continue to be a smaller reporting company until (i) the market value of our stock held by non-affiliates is less than $250 million or (ii) our annual revenue is less than $100 million during the most recently completed fiscal year and the market value of our stock held by non-affiliates is less than $700 million.

If we are a smaller reporting company at the time we cease to be an EGC, we may continue to rely on exemptions from certain disclosure requirements that are available to smaller reporting companies. Specifically, as a smaller reporting company we may choose to present only the two most recent fiscal years of audited financial statements in our Annual Report on Form 10-K and, similar to EGCs, smaller reporting companies have reduced disclosure obligations regarding executive compensation.

Other than as disclosed in Note 2 to our audited consolidated financial statements appearing elsewhere in this Annual Report on Form 10-K, we do not expect that any recently issued accounting standards will have a material impact on our financial statements or will otherwise apply to our operations.

We are exposed to market risk related to changes in interest rates. Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of U.S. interest rates, particularly because our cash equivalents and investments are,

or may be, in the form of money market funds or marketable debt securities and are, or may be, invested in U.S. Treasury and U.S. government agency obligations. However, because of the short-term nature of the investments in our portfolio, an immediate one percentage point change in market interest rates would not have a material impact on the fair market value of our investment portfolio or on our financial position or results of operations.

We are not currently exposed to significant market risk related to changes in foreign currency exchange rates; however, we have contracted with and may continue to contract with foreign vendors that are located in Europe. Our operations may be subject to fluctuations in foreign currency exchange rates in the future.

Inflation generally affects us by increasing our cost of labor. We do not believe that inflation had a material effect on our business, financial condition or results of operations during the years ended December 31, 2021 or 2020.

We have audited the accompanying consolidated balance sheets of Oncorus, Inc. (the Company) as of December 31, 2021 and 2020, the related consolidated statements of operations and comprehensive loss, redeemable convertible preferred stock and stockholders’ equity (deficit) and cash flows for each of the years then ended, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company at December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the years then ended, in conformity with U.S. generally accepted accounting principles.

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part

of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

The accompanying notes are an integral part of these consolidated financial statements.

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit)

The accompanying notes are an integral part of these consolidated financial statements.

2. Summary of Significant Accounting Policies

Basis of Presentation

These consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“GAAP”). Any reference in these notes to applicable guidance is meant to refer to the authoritative United States generally accepted accounting principles as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) of the FASB.

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COVID-19 Pandemic

With the ongoing COVID-19 global pandemic, the Company has implemented business continuity plans designed to address and mitigate the impact of the COVID-19 pandemic on its employees and its business, including its preclinical studies, its ongoing clinical trial, and its regulatory filings. The Company has taken measures to secure its research and development activities, while work in its laboratories and facilities has been re-organized to reduce risks of COVID-19 transmission. Given the global impact and the other risks and uncertainties associated with the pandemic, the Company’s business, financial condition and results of operations could be materially adversely affected. The Company continues to closely monitor the COVID-19 pandemic and evolve its business continuity plans, clinical development plans and response strategy to mitigate any potential impact. As of the date of issuance of these financial statements, the Company is not aware of any specific event or circumstance that would require the Company to update its estimates, assumptions and judgments or revise the carrying value of its assets or liabilities. Actual results could differ from those estimates, and any such differences may be material to the Company’s financial statements.

Going Concern

At each reporting period, the Company evaluates whether there are conditions or events that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the financial statements are issued. The Company is required to make certain additional disclosures if it concludes substantial doubt exists and it is not alleviated by the Company’s plans or when its plans alleviate substantial doubt about the Company’s ability to continue as a going concern.

Principles of Consolidation

The accompanying consolidated financial statements of the Company include the accounts of its wholly owned subsidiary, Oncorus Securities Corporation. All intercompany transactions have been eliminated in consolidation. The Company has one operating segment.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. On an ongoing basis, the Company’s management evaluates its estimates, which include, but are not limited to, the estimated fair value of the Company’s common stock prior to its IPO and share-based awards utilized for stock-based compensation purposes, the Company’s Series B tranche rights (see Note 7), accrued expenses and amounts of expenses during the reported period, and determination of an incremental borrowing rate for any identified leases for which an implicit discount rate is not easily determinable. The Company bases its estimates on historical experience and other market-specific or other relevant assumptions that it believes to be reasonable under the circumstances. Actual results may differ from those estimates or assumptions.

Concentration of Credit Risk and of Significant Suppliers

Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and short-term investments. The Company has all of its cash at one financial institution that management believes to be of high credit quality, in amounts that exceed federally insured limits. The Company invests its excess cash, in line with its investment policy, primarily in money market funds and high credit quality debt instruments .

The Company is dependent upon a third-party contract manufacturer and third-party contract research organizations for the performance of portions of its testing for pre-clinical and clinical studies. The Company believes that its relationships with these organizations are satisfactory, and that alternative suppliers of these services are available in the event of the loss of one or more of these suppliers.

Research and Development Expenses

Research and development expenses are expensed as incurred. Research and development expenses consist of costs incurred to discover, research and develop drug candidates, including compensation-related expenses for research and development personnel, including stock-based compensation expense, preclinical and clinical activities, costs of manufacturing, overhead expenses including facilities and laboratory expenses, materials and supplies, amounts paid to consultants and outside service providers, and depreciation and amortization.

Upfront and annual license payments related to acquired technologies or technology licenses which have not yet reached technological feasibility and have no alternative future use are also included in research and development expense for the period in which they are incurred.

General and Administrative Expenses

General and administrative expenses consist primarily of compensation-related expenses, including stock-based compensation expense, for personnel in executive, finance and accounting, business development, operations and administrative functions. General and administrative expenses also include fees for legal, consulting, accounting and audit services as well as insurance, outside service providers, direct and allocated facility- and office-related costs, and depreciation and amortization.

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Interest Income on Investments

Interest income is separately presented on the consolidated statements of operations and comprehensive loss and consists of interest on cash and cash equivalents and investments.

Cash and Cash Equivalents

The primary objectives for the Company’s investment portfolio are the preservation of capital and maintenance of liquidity. The Company considers highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. At December 31, 2021 and 2020, cash and cash equivalents include bank demand deposits and money market funds that invest primarily in U.S. government-backed securities and treasuries. Cash equivalents are stated at cost, which is substantially equivalent to fair value.

Restricted cash

The Company maintains a balance in a segregated bank account in connection with a letter of credit for the benefit of the landlord in connection with an operating lease. As of December 31, 2021, restricted cash consisted of $3.4 million held for the benefit of the landlord. This amount has been classified as part of non-current assets on the Company's consolidated balance sheets.

The Company includes its restricted cash balance in the cash, cash equivalents and restricted cash reconciliation of operating, investing and financing activities in the consolidated statements of cash flows. The following table provides a reconciliation of cash, cash equivalents and restricted cash in the consolidated balance sheets that sum to the total of the same such amounts shown in the consolidated statements of cash flows:


	DECEMBER 31,
	2021		2020
	(in thousands)
Cash and cash equivalents	$	100,752	$	130,305
Restricted cash		3,437		2,877
Total cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows	$	104,189	$	133,182

Investments

Short-term investments consist of commercial paper, corporate bonds, asset-backed securities, and U.S. Treasury securities with original maturities greater than three months. The Company may sell investments at any time for use in current operations even if the investments have not yet reached maturity. As a result, the Company classifies its investments, including securities with maturities beyond twelve months, as current assets. As of December 31, 2021, all investments are classified as available-for-sale securities, which are recorded at fair value. Unrealized holding gains and losses on available-for-sale securities are reported as a net amount in accumulated other comprehensive income or loss in stockholders’ equity until realized. Purchase premiums and discounts are amortized to interest income over the terms of the related securities. Realized gains and losses and declines in fair value that are deemed to be other than temporary are reflected in the statements of operations and comprehensive loss using the specific-identification method. The Company periodically reviews all available-for-sale securities for other than temporary declines in fair value below the cost basis whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The Company also evaluates whether it has plans or is required to sell short-term investments before recovery of their amortized cost bases. For the year ended December 31, 2021, the Company has not identified any other than temporary declines in fair value of its short-term investments.

Property and Equipment, Net

Property and equipment are recorded at cost. Expenditures for major renewals or betterments that extend the useful lives of property and equipment are capitalized; expenditures for maintenance and repairs are charged to expense as incurred. Depreciation expense is recognized on a straight-line basis over the estimated useful lives of the related assets. Property and equipment are depreciated as follows:


ASSET TYPE		ESTIMATED USEFUL LIFE
Computer equipment and software		3-5 years
Furniture and fixtures		5 years
Laboratory equipment		5 years
Leasehold improvements		Shorter of lease term or estimated useful life

Upon retirement or sale, the cost and related accumulated depreciation of assets disposed of are removed from the accounts, and any resulting gain or loss is included in the Company's consolidated statements of operations as a component of other income (expense).

Impairment of Long-Lived Assets

Long-lived assets consist of property and equipment. Long-lived assets to be held and used are tested for recoverability whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable. Factors that

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the Company considers in deciding when to perform an impairment review include significant underperformance of the business in relation to expectations, significant negative industry or economic trends, and significant changes or planned changes in the use of the long-lived assets. If an impairment review were to be performed to evaluate a long-lived asset for recoverability, the Company would compare forecasts of undiscounted cash flows expected to result from the use and eventual disposition of the long-lived asset to its carrying value. An impairment loss would be recognized if estimated undiscounted future cash flows expected to result from the use of an asset are less than its carrying amount. The impairment loss would be based on the excess of the carrying value of the impaired asset over its fair value, determined based on discounted cash flows. For the years ended December 31, 2021 and 2020, the Company has not recorded any impairment losses on long-lived assets.

Fair Value Measurements

Certain assets and liabilities of the Company are carried at fair value under GAAP. Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three levels of the fair value hierarchy, of which the first two are considered observable and the last is considered unobservable:

Level 1—Valuations based on quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

Level 2—Valuations based on quoted prices for similar assets or liabilities in markets that are not active or for which all significant inputs are observable, either directly or indirectly, such as quoted market prices, interest rates, and yield curves.

Level 3—Valuations that require inputs that reflect the Company’s own assumptions that are both significant to the fair value measurement and unobservable.

To the extent a valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair values requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized as Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The Company believes that the carrying amounts of prepaid expenses, other current assets, accounts payable, and accrued expenses approximate their fair values due to the short-term nature of those instruments.

Research Contract Costs and Accruals

The Company has entered into various research service arrangements under which vendors perform various services. The Company records accrued expenses for estimated costs incurred under the arrangements. When evaluating the adequacy of the accrued expenses, the Company analyzes the progress of the studies, trials or other services performed, including invoices received and contracted costs. Judgments and estimates are made in determining the accrued expense balances at the end of each reporting period.

Operating Leases

At the inception of an arrangement, the Company determines whether the arrangement is or contains a lease based on specific facts and circumstances, the existence of an identified asset(s), if any, and the Company’s control over the use of the identified asset(s), if applicable. The lease liability is measured at the present value of future lease payments, discounted using the discount rate as of the lease commencement date. Future lease payments may include payments that depend on an index or a rate (such as the consumer price index or other market index). The Company initially measures payments based on an index or rate by using the applicable rate at lease commencement and subsequent changes in such rates are recognized as variable lease costs. Variable payments that do not depend on a rate or index are not included in the lease liability and are recognized as they are incurred. The Company’s contracts typically do not have variable payments based on index or rate. The Company’s contracts that include a lease component generally include additional services that are transferred to the lessee (e.g., common-area maintenance services), which are non-lease components. Contracts typically also include other costs and fees that do not provide a separate service to the lessee, such as costs paid by the lessee to reimburse the lessor for administrative costs or payment for the lessor’s costs for property taxes, insurance related to the leased asset, and other lessor costs. The Company elected the practical expedient to account for the lease and its associated non-lease components as a single lease component for its real estate leases, including the office, lab, and its manufacturing space.

When readily determinable, the discount rate used to calculate the lease liability is the rate implicit in the lease. As the Company's leases typically do not provide an implicit rate, the Company uses its incremental borrowing rate based on the lease term and economic environment at the lease commencement date. The lease term used to calculate the lease liability includes options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. With limited exceptions, the nature of the Company's facility leases is such that there are no economic or other conditions that would indicate that it is reasonably certain at lease commencement that the Company will exercise options to extend the term.

The Company recognizes a corresponding lease right of use (“ROU”) asset, initially measured as the amount of lease liability, adjusted for any initial lease costs or lease payments made before or at the commencement of the lease, and reduced by any lease incentives. In some instances, as construction related to leasehold improvements is performed over the life of the lease, the right-of-use asset and lease liability will be adjusted on a prospective basis to reflect any payments relating to the lease incentives.

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The Company’s leases consist of only operating leases. Operating leases are recognized on the balance sheet as ROU lease assets, lease liabilities current and lease liabilities non-current. Fixed rents are included in the calculation of the lease balances while certain variable costs paid for certain operating and pass-through costs are excluded. Lease expense is recognized over the expected lease term on a straight-line basis. For leases with a term of one year or less, or short-term leases, the Company has elected to not recognize the lease liability for these arrangements and the lease payments are recognized in the consolidated statements of operations and comprehensive loss.

Patent Costs

The Company expenses patent costs as incurred and records such costs within general and administrative expenses.

Comprehensive Loss

Comprehensive loss includes net loss as well as other changes in stockholders’ equity that result from transactions and economic events other than those with stockholders.

Classification and Measurement of Series A-1 and Series B Redeemable Convertible Preferred Stock

Prior to the IPO, the Company classified its Series A-1 and Series B outside of permanent equity because the shares of Series A-1 and Series B contained certain redemption features that resulted in the Series A-1 and Series B being redeemable (i) at the option of the holder or (ii) upon the occurrence of events that were not solely within the control of the Company. As a result of these redemption provisions, the Series A-1 and Series B were recorded outside of permanent equity and were subject to subsequent measurement under the guidance provided under ASC 480-10-S99. While the Series A-1 and Series B were not currently redeemable, the Series A-1 and Series B were probable of becoming redeemable, and the Company elected to recognize changes in the redemption amount over the period from the date of issuance to the earliest possible redemption date. Changes in the redemption amount were recognized as a deemed dividend and presented as a reduction to income attributable to common stockholders.

Income Taxes

The Company accounts for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the consolidated financial statements or in the Company’s income tax returns. Deferred taxes are determined based on the difference between the consolidated financial statement and tax bases of assets and liabilities using enacted tax rates in effect in the years in which the differences are expected to reverse. Changes in deferred tax assets and liabilities are recorded in the provision for income taxes in the Company's consolidated statements of operations and comprehensive loss. The Company assesses the likelihood that its deferred tax assets will be realized and, to the extent it believes, based upon the weight of available evidence, that it is more likely than not that all or a portion of the deferred tax assets will not be realized, a valuation allowance is established through a charge to income tax expense. The potential for recovery of deferred tax assets is evaluated by analyzing carryback capacity in periods with taxable income, reversal of existing taxable temporary differences and estimating the future taxable profits expected and considering prudent and feasible tax planning strategies.

The Company accounts for uncertainty in income taxes recognized in the consolidated financial statements by applying a two-step process to determine the amount of tax benefit to be recognized. First, the tax position must be evaluated to determine the likelihood that it will be sustained upon external examination by the taxing authorities. If the tax position is deemed more-likely-than-not to be sustained, the tax position is then assessed to determine the amount of benefit to recognize in the financial statements. The amount of the benefit that may be recognized is the largest amount that has a greater than 50% likelihood of being realized upon ultimate settlement. The provision for income taxes includes the effects of any resulting tax reserves, or unrecognized tax benefits, that are considered appropriate as well as the related net interest and penalties. The Company recognizes any interest and penalties related to uncertain tax positions in income tax expense.

Stock-Based Compensation

The Company measures all stock options and other stock-based awards granted based on the fair value of the award on the date of the grant and recognizes stock-based compensation expense for those awards over the requisite service period, which is generally the vesting period of the respective award. The Company has elected to recognize forfeitures as they occur. The reversal of compensation cost previously recognized for an award that is forfeited because of a failure to satisfy a service or performance condition is recognized in the period of the forfeiture. Generally, the Company issues stock options and restricted stock awards with only service-based vesting conditions and records the expense for these awards using the straight-line method over the requisite service period. For performance-based awards that are awarded, the Company applies the graded-vesting method to the awards once achievement of the performance conditions is considered probable.

The Company classifies stock-based compensation expense in its consolidated statements of operations and comprehensive loss in the same manner in which the award recipient’s payroll costs are classified or in which the award recipients’ service payments are classified.

The fair value of each stock option grant is estimated on the date of grant using the Black-Scholes option pricing model, which requires inputs based on certain subjective assumptions, including the fair value of the Company’s common stock, expected stock price volatility, the expected term of the stock option, the risk-free interest rate for a period that approximates the expected term of the

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stock option, and the Company’s expected dividend yield. The closing sale price per share of the Company’s common stock as reported on The Nasdaq Global Market on the date of grant is used to determine the fair value, which is then used to establish the exercise price per share of share-based awards to purchase common stock. As there was no public market for its common stock prior to October 2, 2020, which was the first day of trading upon completion of its IPO, the Company estimates its expected share price volatility based on the historical volatility of publicly-traded peer companies and expects to continue to do so until such time as it has adequate historical data regarding the volatility of its own traded share price. The expected term of the Company’s stock options has been determined utilizing the “simplified” method for awards that qualify as “plain vanilla” stock options. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. Expected dividend yield is based on the fact that the Company has never paid cash dividends on common stock and does not expect to pay any cash dividends in the foreseeable future.

The fair value of each restricted common stock award is estimated on the date of grant based on the fair value of the Company’s common stock on that same date.

Net Loss Per Share

Net loss per share attributable to common stockholders is calculated using the two-class method, which is an earnings allocation formula that determines net loss per share for the holders of the Company’s common shares and participating securities. Prior to the IPO, the Company’s Series A-1 and Series B contained participating rights in any dividend paid by the Company and were therefore participating securities. Net loss attributable to common stockholders and participating securities is allocated to each share on an as-converted basis as if all of the earnings for the period had been distributed. However, the participating securities did not include a contractual obligation to share in the losses of the Company and were not included in the calculation of net loss per share in the periods that had a net loss. In addition, common stock equivalent shares (whether or not participating) are excluded from the computation of diluted earnings per share in periods in which they have an anti-dilutive effect on net loss per share.

Basic net loss per share is computed by dividing the net loss by the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed using the more dilutive of (a) the two-class method or (b) the if-converted method and treasury stock method, as applicable. In periods in which the Company reports a net loss attributable to common stockholders, diluted net loss per share attributable to common stockholders is the same as basic net loss per share attributable to common stockholders since dilutive common shares are not assumed to have been issued if their effect is anti-dilutive. Diluted net loss per share is equivalent to basic net loss per share for the years presented herein because common stock equivalent shares from the Series A-1, Series B, restricted stock, stock option awards and outstanding warrants to purchase common stock (see Notes 9 and 14) were anti-dilutive.

Deferred Offering Costs

The Company capitalizes certain legal, professional, accounting and other third-party fees that are directly associated with in-process equity issuances as deferred offering costs until such equity issuances are consummated. After consummation of the equity issuance, these costs are recorded as a reduction in the capitalized amount associated with the equity issuance. Should the equity issuance be delayed or abandoned, the deferred offering costs will be expensed immediately as a charge to operating expenses in the consolidated statement of operations and comprehensive loss.

Recently Issued Accounting Pronouncements

In November 2021, the FASB issued ASU No. 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities About Government Assistance, which seeks to increase transparency on governmental assistance in entities' financial reporting. This guidance is effective for all business entities for fiscal years beginning after December 15, 2021. Early adoption is permitted. The Company does not believe that the adoption of this standard will have a material impact on its consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Additionally, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, in April 2019 and ASU 2019-05, Financial Instruments — Credit Losses (Topic 326) — Targeted Transition Relief, in May 2019. The amendments affect loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. In November 2019, the FASB issued ASU 2019-10, which defers the effective date of ASU 2016-13 for smaller reporting companies to fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Company is currently evaluating the impact of the adoption of ASU No. 2016-13 on the consolidated financial statements.

Other pronouncements issued by the FASB or other authoritative accounting standards group with future effective dates are either not applicable or not significant to our consolidated financial statements.

3. Cash Equivalents and Investments

The following tables summarize the amortized cost and fair value of our cash equivalents and investments (in thousands):


	DECEMBER 31, 2021
	AMORTIZED COST BASIS		GROSS UNREALIZED GAINS		GROSS UNREALIZED LOSSES			ESTIMATED FAIR VALUE
Cash Equivalents
Money market funds	$	98,900	$	—	$	—		$	98,900
Total Cash Equivalents	$	98,900	$	—	$	—		$	98,900

Investments
Commercial paper	$	11,084	$	—	$	—		$	11,084
Asset-backed securities		2,020		—		(2	)		2,018
U.S. treasury securities		4,812		—		(8	)		4,804
Corporate bonds		5,271		—		(4	)		5,267
Total Investments	$	23,187	$	—	$	(14	)	$	23,173


	DECEMBER 31, 2020
	AMORTIZED COST BASIS		GROSS UNREALIZED GAINS		GROSS UNREALIZED LOSSES		ESTIMATED FAIR VALUE
Cash Equivalents
Money market funds	$	126,056	$	—	$	—	$	126,056
Total Cash Equivalents	$	126,056	$	—	$	—	$	126,056

The Company had no Investments as of December 31, 2020.

As of December 31, 2021, the Company held four investments with unrealized losses. All investments in an unrealized loss position were in this position for less than 12 months. The Company evaluated its securities for potential other-than-temporary impairment and considered the decline in market value to be primarily attributable to current economic and market conditions. Additionally, the Company does not intend to sell the securities in an unrealized loss position and does not expect it will be required to sell the securities before recovery of the unamortized cost basis. Given the Company's intent and ability to hold such securities until recovery, and the lack of a significant change in credit risk for these investments, the Company does not consider these investments to be impaired as of December 31, 2021.

There were no realized gains or losses recognized on investments for the year ended December 31, 2021. Interest on investments is recognized as interest income in the consolidated statements of operations and comprehensive loss.

All investments held as of December 31, 2021, were classified as available-for-sale securities and had contractual maturities of less than two years.

4. Fair Value Measurements

The following table presents information about the Company’s financial assets measured at fair value on a recurring basis (in thousands):


	FAIR VALUE MEASUREMENTS AS OF DECEMBER 31, 2021
	LEVEL 1		LEVEL 2		LEVEL 3		TOTAL
Assets:
Money market funds	$	98,900	$	—	$	—	$	98,900
U.S. treasury securities		4,804		—		—		4,804
Commercial paper		—		11,084		—		11,084
Asset-backed securities		—		2,018		—		2,018
Corporate bonds		—		5,267		—		5,267
Total Assets	$	103,704	$	18,369	$	—	$	122,073

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	FAIR VALUE MEASUREMENTS AS OF DECEMBER 31, 2020
	LEVEL 1		LEVEL 2		LEVEL 3		TOTAL
Assets:
Money market funds	$	126,056	$	—	$	—	$	126,056
Total Assets	$	126,056	$	—	$	—	$	126,056

The Company classifies its money market funds and U.S. treasury securities as Level 1 assets since it measures fair value using quoted prices in active markets for identical assets. The Level 2 assets include commercial paper, asset-backed securities, and corporate bonds and are valued based on quoted prices for similar assets in active markets and inputs other than quoted prices that are derived from observable market data. The Company did not hold any Level 3 assets during the periods presented.

The Company evaluates transfers between levels at the end of each reporting period. There were no transfers between Level 1 and Level 2 assets during the periods presented.

As of December 31, 2021, other long-term liabilities of $0.2 million represents the value of unmet conditions associated with a governmental grant received in 2021. The Company anticipates meeting these conditions between 2024 and 2026 and, upon satisfaction, will reduce these liabilities with a corresponding reduction to research and development expenses.

In September 2020, the Company achieved the second tranche milestones which related to the clinical development of its lead product candidate, ONCR-177. Upon achievement of the milestones, the Series B investors became obligated to purchase additional shares of Series B in a second tranche closing and the Company issued an aggregate of 41,690,117 shares of Series B at $0.8597 per share, for gross proceeds to the Company of $35.8 million. Upon closing of the second tranche, the Company considered whether there was any potential beneficial conversion feature, concluding that there was not, as the effective conversion price of the Series B was in excess of the fair value of the Company’s common stock.

9. Common Stock

Each share of common stock is entitled to one vote. The holders of shares of common stock are entitled to receive dividends, if and when declared by the Board of Directors. Prior to the IPO, the voting, dividend, and liquidation rights of the holders of common stock were subject to, and qualified by, the rights, powers, and preferences of the holders of Series B and Series A-1.

Upon the closing of the IPO, the Company changed its authorized capital stock to include 100,000,000 shares designated as common stock with a par value of $0.0001 per share.

Restricted Stock

The Company issued restricted stock to its founders and certain officers of the Company. In general, the shares of restricted stock vest over a four-year period, with 25% of the shares vesting after one year, followed by monthly vesting over the remaining three years. A summary of non-vested restricted stock during the year ended December 31, 2021 is as follows:


	AMOUNT			WEIGHTED- AVERAGE GRANT DATE FAIR VALUE
Balance at December 31, 2020		17,234		$	1.57
Repurchases		—			—
Issuances		—			—
Vested		(17,234	)		1.57
Balance at December 31, 2021		—

Common Stock Warrants

The Company has issued common stock warrants that allow for the holders to purchase an aggregate of 71,544 shares of common stock at $1.21 per share. As of December 31, 2021, all of the common stock warrants were fully exercisable. The common stock warrants expire in 2031.

Reserved Shares

The Company has reserved shares of common stock for the conversion or exercise of the following securities:


	DECEMBER 31, 2021		DECEMBER 31, 2020
Exercise of common stock warrants		71,544		71,544
Exercise of options to purchase common stock		3,681,793		2,790,746
Vesting of restricted stock		—		17,234
Shares available for issuance under equity incentive plans		2,132,067		2,123,440
Total		5,885,404		5,002,964

10. Equity Incentive Plans

The Company adopted the 2016 Equity Incentive Plan (the “2016 Plan”) on March 31, 2016. The Plan, as amended, provided for the granting of stock options, restricted stock awards, restricted stock units, stock appreciation rights and other stock awards to employees, directors and non-employees. All option awards were granted with an exercise price equal to or greater than the market price of the Company's stock at the date of grant. Option awards generally vest over three to four years. Certain option awards provide for accelerated vesting if there is a change in control as defined in the 2016 Plan. The provisions of the 2016 Plan allow for early exercises for options that have not yet vested. Early exercises have historically been for a de minimis number of shares.

On September 23, 2020, the Company adopted the 2020 Equity Incentive Plan (the “2020 Plan”), which became effective upon the execution of the underwriting agreement related to the IPO and serves as the successor to the 2016 Plan. The 2020 Plan authorizes the award of stock options, restricted stock awards, stock appreciation rights, restricted stock units, cash awards, performance awards, and stock bonus awards. The number of shares reserved for issuance under the 2020 Plan will increase automatically on January 1 of each fiscal year, starting on January 1, 2021 and ending on and including January 1, 2030, by the number of shares equal to 5% of the aggregate number of outstanding shares of common stock as of the immediately preceding December 31, or a lesser number of shares as may be determined by the board of directors (or an authorized committee thereof). On January 1, 2021, the number of shares reserved for issuance under the 2020 Plan automatically increased by 1,130,896 shares of common stock. At December 31, 2021, there were 2,132,067 shares of common stock available for issuance under the 2020 Plan. On January 1, 2022, the plan automatically increased by 1,292,458 shares of common stock.

On September 23, 2020, the Company adopted the 2020 Employee Stock Purchase Plan (the “ESPP”), which became effective upon the execution of the underwriting agreement related to the IPO. The Company has initially reserved 280,000 shares of common stock

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for sale under the ESPP. The aggregate number of shares reserved for sale under the ESPP will increase automatically on January 1 of each fiscal year starting on January 1, 2021 and ending on and including January 1, 2030, by the number of shares equal to the lesser of (a) 1% of the total number of shares of common stock outstanding on the last day of the fiscal year prior to the date of such automatic increase and (b) 560,000 shares, provided that prior to the date of any such increase, the board of directors may determine a less number of shares for such increase. There was no automatic increase in the number of shares of common stock reserved for sale under the ESPP in 2021. In December 2021, the board of directors determined that there would be no automatic increase in the number of shares of common stock reserved for sale under the ESPP on January 1, 2022.

The fair value of each stock option award is estimated on the date of grant using the Black-Scholes option-pricing model using the range of assumptions for the years ended December 31, 2021 and 2020 as noted in the following table:


	YEARS ENDED DECEMBER 31,
	2021	2020
Expected volatility	81.4%-88.3%	78.7%-86.3%
Expected dividends	0.0%	0.0%
Expected term (in years)	5.3-10	6.1-10
Risk-free rate	0.5%-1.6%	0.4%-1.2%

Total stock-based compensation expense (including both stock option awards and restricted stock) was as follows:


	YEARS ENDED DECEMBER 31,
	2021		2020
	(in thousands)
General and administrative	$	4,240	$	964
Research and development		2,333		774
Total stock-based compensation	$	6,573	$	1,738

Total stock-based compensation expense by award type was as follows:


	YEARS ENDED DECEMBER 31,
	2021		2020
	(in thousands)
Restricted stock	$	25	$	33
Stock options		6,548		1,705
Total stock-based compensation	$	6,573	$	1,738

In December 2020, the Company granted an employee an option to purchase 113,000 shares of the Company’s common stock with an exercise price per share equal to the fair value of the Company’s common stock on the date of grant. This grant is included in the outstanding options in the summary table below. The option grant includes three separate tranches (each tranche representing one-third of the total grant) that will each vest four years from the date of grant. This option grant and its tranches are subject to accelerated vesting in the event that the Company achieves certain defined milestones related to the Company’s manufacturing efforts. As of December 31, 2021, the Company determined that the requisite service period of this award is four years and recognized $0.6 million of stock-based compensation expense for the year ended December 31, 2021. Accelerated vesting was not considered to be probable for any tranche of this award at December 31, 2021.

A summary of stock option activity for the year ended December 31, 2021 is presented below:


	SHARES			WEIGHTED- AVERAGE EXERCISE PRICE		WEIGHTED- AVERAGE REMAINING CONTRACTUAL TERM (YEARS)		AGGREGATE INTRINSIC VALUE (IN THOUSANDS)
Outstanding at December 31, 2020		2,790,746		$	8.13
Granted		1,258,759		$	15.41
Exercised		(231,222	)	$	2.47
Canceled, expired, or forfeited		(136,490	)	$	11.72
Outstanding at December 31, 2021		3,681,793		$	10.84	8.11		$	2,875
Vested and expected to vest at December 31, 2021		3,681,793		$	10.84	8.11		$	2,875
Exercisable at December 31, 2021		1,407,937		$	5.71		7.06	$	2,377

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The weighted average grant date fair value of options granted to employees, directors and non-employee consultants during the years ended December 31, 2021 and 2020 was $11.05 and $12.88, respectively. The total intrinsic value of stock options exercised was $2.4 million and $0.9 million for the years ended December 31, 2021 and 2020, respectively. Total unrecognized stock-based compensation expense related to stock options amounted to $19.8 million at December 31, 2021 and is expected to be recognized over a weighted-average period of 2.62 years.

The total fair value of restricted shares vested during each of the years ended December 31, 2021 and 2020 was less than $0.1 million.

11. Income Taxes

Total (benefit from) provision for income taxes for the years ended December 31, 2021 and 2020 consisted of the following (in thousands):


	DECEMBER 31,
	2021			2020
Current income tax expense	$	—		$	—

Deferred income tax benefit		19,943			10,994
Valuation allowance for deferred tax assets		(19,943	)		(10,994	)
Deferred income tax expense, net		—			—

Total (benefit from) provision for income taxes	$	—		$	—

A reconciliation of income tax expense (benefit) at the statutory federal income tax rate and income taxes as reflected in the consolidated financial statements is as follows:


	DECEMBER 31,
	2021			2020
Federal income tax benefit at statutory rate		21.0	%		21.0	%
State income tax, net of federal benefit		6.1			4.6
Permanent differences		(0.4	)		(5.6	)
Research and development credit benefit		3.8			2.8
Change in valuation allowance		(30.5	)		(22.8	)
Effective income tax rate	— %			— %

The Company had a net loss for 2021 and 2020 and no income tax benefit has been recorded due to the full valuation allowance for deferred tax assets. The components of the Company’s deferred taxes at December 31, 2021 and 2020 are as follows (in thousands):


	DECEMBER 31,
	2021			2020
Deferred tax assets:
Net operating loss carryforwards (federal and state)	$	41,610		$	27,761
Tax credits (federal and state)		6,967			4,507
Accrued expenses and other liabilities		316			—
Capitalized research and development expenditures		835			835
Intangible assets		322			—
Stock based compensation		1,499			133
Lease liabilities		14,226			11,640
Total deferred tax assets		65,775			44,876
Valuation allowance		(53,139	)		(33,194	)
Net deferred income tax assets		12,636			11,682
Deferred tax liabilities:
Fixed assets		(283	)		(379	)
Right-of-use assets		(12,353	)		(11,303	)
Net deferred tax liabilities		(12,636	)		(11,682	)
Net deferred income taxes	$	—		$	—

The Company has evaluated the positive and negative evidence bearing upon its ability to realize the deferred tax assets. Management has considered the Company’s history of cumulative net losses incurred since inception and its lack of commercialization of any products or generation of any revenue from product sales since inception and has concluded that it is more likely than not that the Company will not realize the benefits of the deferred income tax assets. Accordingly, a full valuation allowance has been established against the net deferred income tax assets for each period presented. Management evaluates the positive and negative evidence at each

115

reporting period. The valuation allowance was $53.1 million as of December 31, 2021 and $33.2 million as of December 31, 2020. The increase in the valuation allowance of approximately $19.9 million in 2021 was primarily a result of net losses generated with no corresponding financial statement benefit.

As of December 31, 2021, the Company had net operating loss carryforwards (“NOLs”) for federal income tax purposes of $153.0 million, of which $18.1 million will begin to expire in 2035, and approximately $134.9 million can be carried forward indefinitely. The Company also has $150.1 million of state net operating losses which expire at various dates through 2041. As of December 31, 2021, the Company also had available research and development tax credit carryforwards for federal and state income tax purposes of $5.1 million and $2.4 million, respectively, which begin to expire in 2035 and 2030, respectively. Utilization of the net operating loss carryforwards and research and development tax credit carryforwards may be subject to a substantial annual limitation under Section 382 and Section 383 of the Internal Revenue Code of 1986 due to ownership changes that have occurred previously or that could occur in the future. These ownership changes may limit the amount of carryforwards that can be utilized annually to offset future taxable income. In general, an ownership change, as defined by Section 382, results from transactions increasing the ownership of certain shareholders or public groups in the stock of a corporation by more than 50% over a three-year period. The Company has not conducted a study to assess whether a change of control has occurred or whether there have been multiple changes of control since inception due to the significant complexity and cost associated with such a study. If the Company has experienced a change of control, as defined by Section 382, at any time since inception, utilization of the NOLs or research and development tax credit carryforwards would be subject to an annual limitation under Section 382, which is determined by first multiplying the value of the Company’s stock at the time of the ownership change by the applicable long-term tax-exempt rate, and then could be subject to additional adjustments, as required. Any limitation may result in expiration of a portion of the NOLs or research and development tax credit carryforwards before utilization. Further, until a study is completed, and any limitation is known, no adjustments have been reflected in the deferred income tax asset for NOL carryforwards or credits.

For the year ended December 31, 2021, the Company generated research credits but has not conducted a study to document the qualified activities. This study may result in an adjustment to the Company’s research and development credit carryforwards; however, until a study is completed and any adjustment is known, no amounts have been recognized as an uncertain tax position. A full valuation allowance has been provided against the Company’s research and development credits and, if an adjustment is required, this adjustment would be offset by an adjustment to the deferred income tax asset established for the research and development credit carryforwards and the valuation allowance.

The Company had no unrecognized tax benefits or related interest and penalties for the years ended December 31, 2021 and 2020.

The Company files tax returns as prescribed by the tax laws of the jurisdictions in which it operates. In the normal course of business, the Company is subject to examination by federal and state jurisdictions, where applicable. There are currently no pending income tax examinations. The Company’s tax years are still open under statute from the year of formation to the present. The Company’s policy is to record interest and penalties related to income taxes as part of its income tax provision.

The Company established a Massachusetts securities corporation in 2019. The securities corporation is taxed on its investment income at the rate of 1.32%. The income tax associated with investment income from the securities corporation was not material to the 2021 income tax provision.

12. Leases

The Company has an operating lease in Cambridge, Massachusetts for its corporate headquarters. The lease will expire in January 2024 and includes an optional extension for an additional three-year period.

The Company also has an operating lease for approximately 33,518 square feet (the “Pod 4 Portion”), and approximately 54,666 square feet (the “Pod 5 Portion”), of a manufacturing facility located in Andover, Massachusetts that expires in December 2036. The Company has two options to extend the term of the lease for a period of ten years each. As of December 31, 2021, the Company had not exercised its options to extend the lease term for either lease and it does not deem it reasonably certain that these options will be exercised. The Company agreed to provide the landlord with a $2.9 million letter of credit as support for its obligations under the Andover facility lease. The lease provides a lease incentive in the form of reimbursable leasehold improvements of approximately $13.2 million. Due to the unpredictability of the payout of leasehold improvement reimbursements, the right-of-use asset will be adjusted on a prospective basis to reflect any payments relating to the lease incentive as construction related to these improvements is performed over the life of the lease. For the year ended December 31, 2021, the Company capitalized $17.0 million of leasehold improvement costs, of which $1.7 million was reimbursed through the lease incentive. The lease payments include fixed base rent payments and variable rents for certain shared facility operating and other costs.

In November 2021, the Company entered into an amendment to its existing lease agreement for manufacturing and office space in Andover, Massachusetts. The amendment increased the existing footprint of the facility by approximately 17,150 square feet ("Pod 3 Portion"). The term of the overall lease remained unchanged and rent payments for the Pod 3 Portion are expected to commence on July 1, 2022. The Company evaluated this amendment and determined that it is a lease modification that resulted in a separate contract

116

that is to be treated as a separate lease from the Pod 4 and Pod 5 Portions. In connection with this amendment, the Company agreed to provide the landlord an increase of $0.5 million to the letter of credit as support for its obligations under the lease, bringing the total amount of the letter of credit to $3.4 million. The letter of credit is recorded as a non-current asset on the consolidated balance sheet as of December 31, 2021. The amendment further provides a lease incentive in the form of reimbursable leasehold improvements specific to the Pod 3 Portion of approximately $1.7 million. The leased premises for the Pod 3 Portion were available as of December 1, 2021, and the Company recognized a right-of-use asset and lease liability of $8.3 million on that date. Similar to the Pod 4 and Pod 5 Portions, due to the unpredictability of the payout of leasehold improvement reimbursements, the right-of-use asset will be adjusted on a prospective basis to reflect any payments related to the lease incentive as construction related to the leasehold improvements is performed.

During the years ended December 31, 2021 and 2020, the Company recognized total rent expense of $5.7 million and $1.0 million, respectively, related to office and lab space under the leases. The amount of variable rent expense and rent for short-term leases for these periods was $2.2 million and $0.6 million, respectively.

Other supplemental information related to leases was as follows as of December 31, 2021:


(in thousands)	2021	2020
Weighted average remaining lease term	13.8 years	14.5 years
Weighted average discount rate	8.1%	8.5%
Cash paid for amounts included in the measurement of lease liabilities	$1,777	$1,924

Maturities of operating lease liabilities were as follows as of December 31, 2021 (in thousands):


Year	Amount
2022	$	5,704
2023		6,380
2024		4,995
2025		5,145
2026		5,299
Thereafter		62,572
Total lease payments		90,095
Less imputed interest		(38,023	)
Total lease liabilities	$	52,072

Current portion	$	1,684
Long-term portion	$	50,388

13. Commitments and Contingencies

License and Royalty Agreements

The Company has entered into license and royalty agreements for intellectual property with certain parties. Such arrangements require ongoing payments, including payments upon the achievement of certain development, regulatory and commercial milestones, receipt of sublicense income, as well as royalties on commercial sales. Payments under these arrangements are expensed as incurred.

The Company’s material license and collaboration agreements are summarized below.

Ospedale San Raffaele S.r.l. and Fondazione Telethon

In December 2015, the Company entered into a license agreement with Ospedale San Raffaele S.r.l. and Fondazione Telethon, as amended, for the use of certain patents and technology. The Company made an initial payment of $0.1 million, which amount was recorded as research and development expense. Under the terms of the license, the Company is required to pay an annual maintenance fee, up to $3.9 million in milestone payments for the first indication, up to $5.7 million in milestone payments for each subsequent indication, and a low single digit tiered royalty on net sales of any covered products. The agreement terminates upon the expiration of the last remaining royalty obligation for a licensed product.

University of Pittsburgh

In March 2016, the Company entered into a license agreement, as amended, with University of Pittsburgh for the use of certain patents and technology. The Company made an initial payment of $0.1 million, which amount was recorded as research and development expense. Under the terms of the license, the Company is required to pay an annual maintenance fee and up to $2.6 million in milestone payments through first commercial product sale and a low single digit royalty on net product revenue, subject to annual minimum amounts, through the expiration of the patent claims.

117

Northwestern University

In December 2018, the Company entered into a license agreement with Northwestern University for the use of certain patents and technology. The Company made an initial payment of $0.1 million, which amount was recorded as research and development expense. Under the terms of the license, the Company is required to pay an annual maintenance fee and up to $4.1 million in milestone payments through the first commercial product sale and an annual low single digit royalty on net sales, subject to annual minimum amounts, through the later of ten years from the first commercial sale or the expiration of the patent claims.

WuXi Biologics Ireland Limited

In July 2019, the Company entered into a license agreement with Wuxi Biologics Ireland Limited for the use of certain patents and technology. Under the terms of the license, the Company agreed to an initial license payment of $0.3 million and is required to pay milestone payments for the first product developed, as well as additional products, in addition to royalties on net product revenue. For the first product developed, the Company is required to pay up to $8.0 million in certain clinical milestone payments. For the first three products developed, the Company is also required to pay up to $27.0 million in commercial milestone payments for each product that achieves specified net sales levels along with product approvals in several countries. The Company also agreed to pay tiered royalties on net sales of licensed products ranging in the low-single digits. The obligation to pay royalties under the license agreement expires on a licensed product-by-licensed product and country-by-country basis upon expiry of the last valid claim of the licensed patents that cover such licensed product in such country. In June 2021, the Company satisfied a $0.5 million milestone event related the development of its first product and paid Wuxi Biologics Ireland Limited, which was recorded to research and development expense.

Gaeta Therapeutics Ltd.

In November 2021, the Company entered into a license agreement with Gaeta Therapeutics Ltd. for the use of certain patent rights in connection with usage of a certain transgene, IL-12, with a systemic checkpoint inhibitor and with respect to the development of products that would otherwise infringe on such rights. The Company made an initial payment of $0.2 million, which was recorded as research and development expense in the year ended December 31, 2021. Under the terms of the license, the Company is obligated to make certain milestone payments including a low six-figure payment related to the achievement of a certain patent milestone in the United States, certain clinical and regulatory milestone payments which amount to $7.5 million in the aggregate for a given developed product or indication, and additional annual payments of low single digit millions following regulatory approval of each product. The Company is also obligated to pay tiered royalties on cumulative net sales of all developed products up to $2.5 million in the aggregate for cumulative net sales in excess of certain thresholds of net sales reached, with additional payments in the mid single-digit millions thereafter upon the achievement of additional net sales milestones. The Company achieved the first clinical milestone in December 2021 and paid Gaeta Therapeutics Ltd. $0.5 million, which was recorded to research and development expense.

Related Party License and Royalty Agreements

Certain investors are entitled to receive, in the aggregate, a royalty from the Company equal to 1% of net sales of Company products discovered or developed prior to an IPO by the Company. The royalty obligation expires upon the later of twelve years from the first commercial sale or the expiration of the patent.

The Company entered into a patent assignment agreement with an investor under which that investor would receive $1.0 million upon regulatory approval of a product in the United States and an annual low single-digit royalty on net product revenue. The Company is not currently developing any product candidates using the patent that was assigned to the Company.

In September 2016, the Company entered into a sublicense agreement with an entity affiliated with a stockholder of the Company for the use of certain patents and technology. Under the terms of the license, the Company is required to pay up to $7.6 million in milestone payments through first commercial product sale and an annual mid-single digit royalty on net sales through the expiration of the patent claims. This agreement was terminated in May 2020.

Litigation

The Company is not currently party to any material legal proceedings. At each reporting date, the Company evaluates whether or not a potential loss amount or a potential range of loss is probable and reasonably estimable under the provisions of the authoritative guidance that addresses accounting for contingencies. The Company expenses as incurred the costs related to such legal proceedings.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

Under the supervision and with the participation of our management, including our Chief Financial Officer and our Chief Executive Officer, we evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (Exchange Act)) as of December 31, 2021. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate, to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Based on our management’s evaluation (with the participation of our Chief Executive Officer and our Chief Financial Officer), as of the end of the period covered by this report, our Chief Executive Officer and our Chief Financial Officer have concluded that our disclosure controls and procedures were effective at the reasonable assurance level.

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rule 13a-15(f) under the Exchange Act. Under the supervision and with the participation of senior management, including our Chief Executive Officer and Chief Financial Officer, we evaluated the effectiveness of our internal control over financial reporting based on the framework in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework). Based on the evaluation under that framework and applicable SEC rules, our management concluded that our internal control over financial reporting was effective as of December 31, 2021.

This Annual Report on Form 10-K does not include an attestation report of our registered public accounting firm on our internal control over financial reporting.

There has been no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act) during the quarter ended December 31, 2021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

We will file a definitive Proxy Statement for our 2022 Annual Meeting of Stockholders, or the 2022 Proxy Statement, with the SEC, pursuant to Regulation 14A, not later than 120 days after the end of our fiscal year. Accordingly, certain information required by Part III has been omitted under General Instruction G(3) to Form 10-K. Only those sections of the 2022 Proxy Statement that specifically address the items set forth herein are incorporated by reference.

The information required by Item 10 is incorporated herein by reference to the sections of the 2022 Proxy Statement under the captions “Information Regarding the Board of Directors and Corporate Governance,” “Election of Directors,” and “Information about our Executive Officers.”

The information required by Item 11 is incorporated herein by reference to the sections of the 2022 Proxy Statement under the captions “Executive Compensation” and “Non-Employee Director Compensation.”

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information required by Item 12 is incorporated herein by reference to the sections of the 2022 Proxy Statement under the captions “Security Ownership of Certain Beneficial Owners and Management” and “Securities Authorized for Issuance under Equity Compensation Plans.”

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The information required by Item 13 is incorporated herein by reference to the sections of the 2022 Proxy Statement under the captions “Transactions with Related Persons” and “Independence of the Board of Directors.”

Our independent public accounting firm is Ernst & Young LLP, Boston, Massachusetts (PCAOB Auditor ID: 42).The information required by Item 14 is incorporated herein by reference to the sections of the 2022 Proxy Statement under the caption “Ratification of Selection of Independent Registered Public Accounting Firm.”

(a) (1) Financial Statements. The response to this portion of Item 15 is set forth under Part II, Item 8 above.

(a) (2) Financial statement schedules have been omitted because they are either not required or not applicable or the information is included in the consolidated financial statements or the notes thereto.

The following is a list of Exhibits filed as part of this Annual Report on Form 10-K:

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

KNOW ALL BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Theodore (Ted) Ashburn, M.D., PhD. and John McCabe, and each of them, as his or her true and lawful attorneys-in-fact and agents, with full power of substitution for him or her, and in his or her name in any and all capacities, to sign any and all amendments to this Annual Report on Form 10-K, and to file the same, with exhibits thereto and other documents in connection therewith, with the U.S. Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done therewith, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, and either of them, his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Report has been signed below by the following persons on behalf of the Registrant in the capacities and on the dates indicated.


Delaware		47-3779757
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

50 Hampshire Street, Suite 401 Cambridge, Massachusetts		02139
(Address of principal executive offices)		(Zip Code)


		Page
PART I
Item 1.	Business	1
Item 1A.	Risk Factors	40
Item 1B.	Unresolved Staff Comments	85
Item 2.	Properties	85
Item 3.	Legal Proceedings	86
Item 4.	Mine Safety Disclosures	86

PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	87
Item 6.	[Reserved]	87
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	88
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	97
Item 8.	Financial Statements and Supplementary Data	98
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	119
Item 9A.	Controls and Procedures	119
Item 9B.	Other Information	119
Item 9C.	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections	119

PART III
Item 10.	Directors, Executive Officers and Corporate Governance	120
Item 11.	Executive Compensation	120
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	120
Item 13.	Certain Relationships and Related Transactions, and Director Independence	120
Item 14.	Principal Accounting Fees and Services	120

PART IV
Item 15.	Exhibits and Financial Statement Schedules	121
Item 16	Form 10-K Summary	124


	YEAR ENDED DECEMBER 31,						CHANGE
	2021			2020			$			%
	(in thousands, except percentages)
Operating expenses:
Research and development	$	44,682		$	27,153		$	17,529			65	%
General and administrative		20,136			10,000			10,136			101
Total operating expenses		64,818			37,153			27,665			74
Loss from operations		(64,818	)		(37,153	)		(27,665	)		74
Total other income (expense), net		56			(11,146	)		11,202			(101	)
Net loss	$	(64,762	)	$	(48,299	)	$	(16,463	)		34	%


	YEAR ENDED DECEMBER 31,
	2021		2020		CHANGE
	(in thousands)
Direct external expenses by program:
ONCR-177	$	11,357	$	8,562	$	2,795
ONCR-021		2,668		—		2,668
ONCR-788		831		—		831
Platform development, early-stage research and unallocated expenses:
Employee compensation and related		14,624		8,892		5,732
External research, development and consulting		2,209		3,813		(1,604	)
Laboratory supplies		3,698		2,977		721
Facility-related		6,301		1,388		4,913
Other expenses		2,994		1,521		1,473
Total research and development	$	44,682	$	27,153	$	17,529


	YEAR ENDED DECEMBER 31,
	2021		2020		CHANGE
	(in thousands)
Employee compensation and related expenses	$	8,711	$	3,899	$	4,812
Professional service and consultant fees		8,846		4,494		4,352
Facility-related		529		459		70
Other expenses		2,050		1,148		902
Total general and administrative expenses	$	20,136	$	10,000	$	10,136


☒	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO


	•		the initiation, timing, progress and expected results of our preclinical studies and clinical trials for product candidates from our oncolytic HSV-1 platform, or HSV Platform, including our ongoing Phase 1 clinical trial of ONCR-177 and the reporting of additional clinical data from this trial;


	•		the potential therapeutic benefit of our therapies and their ability to improve upon existing immuno-oncology therapies, including other viral immunotherapies and immune checkpoint inhibitors;


	•		the ability of our HSV Platform to overcome the safety versus potency trade-off and its ability to stimulate multiple arms of the innate and adaptive immune system;


	•		the ability of our selectively self-amplifying vRNA Immunotherapy Platform to avoid the challenges associated with neutralizing antibodies;


	•		our manufacturing capabilities and the buildout of our good manufacturing practices, or GMP, compliant facility and related operational timelines;


	•		the timing of certain regulatory milestones, including the submission of investigational new drug applications, or INDs, and our ability to receive the required regulatory approvals and clearances to successfully market and sell our products in the United States and certain other countries;


	•		impact of the COVID-19 pandemic on our business, operations, strategy, goals and anticipated timelines;


	•		our expectations regarding the potential market size and the rate and degree of market acceptance for any product candidates that we develop;


	•		the commercialization of our product candidates, if approved;


	•		the potential benefits of strategic collaboration agreements and our ability to enter into strategic arrangements;


	•		the effects of competition with respect to our current or future product candidates, as well as innovations by current and future competitors in our industry;


	•		our intellectual property position, including the scope of protection we are able to establish, maintain and enforce for intellectual property rights covering our product candidates;


	•		our financial performance and our ability to effectively manage our anticipated growth;


	•		the sufficiency of our current cash resources and our ability to obtain additional funding for our operations; and


	•		other risks and uncertainties, including those listed under the “Risk Factors” section of this Annual Report.


	•		If the manufacturers upon which we rely fail to produce any product candidates in the volumes that we require on a timely basis, or fail to comply with stringent regulations applicable to biopharmaceutical manufacturers, we may face delays in the development and commercialization of, or be unable to meet demand for, any product candidates, which may have an adverse effect on our business.


AS OF DECEMBER 31, 2021	TOTAL		LESS THAN 1 YEAR		1 TO 3 YEARS		3 TO 5 YEARS		MORE THAN 5 YEARS
Operating lease obligations	$	90,095	$	5,704	$	11,375	$	10,444	$	62,572
Total	$	90,095	$	5,704	$	11,375	$	10,444	$	62,572


	Pages

Report of Independent Registered Public Accounting Firm (PCAOB Auditor ID: 42)	99
Consolidated Balance Sheets as of December 31, 2021 and December 31, 2020	100
Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 2021 and December 31, 2020	101
Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) for the years ended December 31, 2021 and December 31, 2020	102
Consolidated Statements of Cash Flows for the years ended December 31, 2021 and December 31, 2020	103
Notes to Consolidated Financial Statements	104


	SERIES A-1 REDEEMABLE CONVERTIBLE PREFERRED STOCK						SERIES B REDEEMABLE CONVERTIBLE PREFERRED STOCK						COMMON STOCK
	SHARES			AMOUNT			SHARES			AMOUNT			SHARES		AMOUNT		ADDITIONAL PAID-IN CAPITAL			ACCUMULATED OTHER COMPRENSIVE LOSS			ACCUMULATED DEFICIT			TOTAL STOCKHOLDERS’ EQUITY (DEFICIT)
Balance at December 31, 2019		76,499,992		$	63,494			62,535,183		$	53,138			988,700	$	—	$	—		$	—		$	(74,297	)	$	(74,297	)
Issuance of Series B preferred stock		—			—			41,690,117			35,824			—		—		—			—			—			—
Series A-1 and Series B preferred stock dividends and accretion		—			4,830			—			3,696			—		—		(1,298	)		—			(7,229	)		(8,527	)
Settlement of Series B tranche rights		—			—			—			13,132			—		—		—			—			—			—
Conversion of redeemable convertible preferred stock into common stock		(76,499,992	)		(68,324	)		(104,225,300	)		(105,790	)		14,951,554		1		174,113			—			—			174,114
Issuance of common stock in initial public offering, net of $8,569 in offering costs		—			—			—			—			6,557,991		1		89,800			—			—			89,801
Stock-based compensation expense		—			—			—			—			—		—		1,738			—			—			1,738
Vesting of restricted common stock		—			—			—			—			24,368		—		—			—			—			—
Exercise of options to purchase common stock		—			—			—			—			76,435		—		134			—			—			134
Net loss		—			—			—			—			—		—		—			—			(48,299	)		(48,299	)
Balance at December 31, 2020		—		$	—			—		$	—			22,599,048	$	2	$	264,487		$	—		$	(129,825	)	$	134,664
Issuance of common stock in follow-on public offering, net of $4,017 in offering costs		—			—			—			—			3,000,000		1		52,982			—			—			52,983
Stock-based compensation expense		—			—			—			—			—		—		6,573			—			—			6,573
Vesting of restricted common stock		—			—			—			—			17,236		—		—			—			—			—
Exercise of options to purchase common stock		—			—			—			—			231,945		—		578			—			—			578
Other comprehensive loss		—			—			—			—			—		—		—			(14	)		—			(14	)
Net loss		—			—			—			—			—		—		—			—			(64,762	)		(64,762	)
Balance at December 31, 2021		—		$	—			—		$	—			25,848,229	$	3	$	324,620		$	(14	)	$	(194,587	)	$	130,022


	AS OF DECEMBER 31,
	2021		2020
Accrued research and development costs	$	1,474	$	1,369
Accrued leasehold improvement costs		999		—
Accrued compensation		2,697		1,661
Accrued professional fees		846		568
Other accrued expenses		468		140
Total accrued expenses and other long-term liabilities	$	6,484	$	3,738


	SERIES B TRANCHE RIGHTS
Balance at December 31, 2019	$	1,876
Change in fair value		11,256
Settlement of Series B tranche rights liability		(13,132	)
Balance at December 31, 2020	$	—


EXHIBIT NO.	DESCRIPTION	FORM	FILE NO.	EXHIBIT	FILING DATE

3.1	Amended and Restated Certificate of Incorporation.	8-K	001-39575	3.1	October 6, 2020

3.2	Amended and Restated Bylaws.	8-K	001-39575	3.2	October 6, 2020

4.1	Third Amended and Restated Investors’ Rights Agreement by and among the registrant and certain of its stockholders, dated as of August 5, 2019, as amended November 18, 2019.	S-1	333-248757	4.1	September 11, 2020

4.2	Form of Common Stock Certificate.	S-1/A	333-248757	4.2	September 28, 2020

4.3	Form of Common Stock Warrant Agreement.	S-1	333-248757	4.3	September 11, 2020

4.4	Description of Registrant’s Securities.	10-K	001-39575	4.4	March 10, 2021

10.1	Form of Indemnification Agreement between the registrant and its directors and officers	S-1	333-248757	10.1	September 11, 2020

10.2+	2016 Equity Incentive Plan, as amended.	S-1	333-248757	10.2	September 11, 2020

10.3+	Form of Stock Option Grant Notice and Option Agreement for the 2016 Equity Incentive Plan, as amended.	S-1	333-248757	10.3	September 11, 2020

10.4+	Form of Restricted Stock Grant Notice and Restricted Stock Agreement for the 2016 Equity Incentive Plan, as amended.	S-1	333-248757	10.4	September 11, 2020

10.5+	2020 Equity Incentive Plan.	S-1/A	333-248757	10.5	September 28, 2020

10.6+	Form of Stock Option Grant Notice and Option Agreement for the 2020 Equity Incentive Plan.	S-1/A	333-248757	10.6	September 28, 2020

10.7+	Form of Restricted Stock Unit Grant Notice and Restricted Stock Unit Award Agreement for the 2020 Equity Incentive Plan.	S-8	333-249425	4.9	October 9, 2020

10.8+	2020 Employee Stock Purchase Plan.	S-1/A	333-248757	10.7	September 28, 2020

10.9+	Amended and Restated Employment Agreement by and between the registrant and Mitchell Finer, dated as of August 8, 2018, as amended November 14, 2018 and April 6, 2020.	S-1	333-248757	10.11	September 11, 2020


10.10+*	Letter Agreement by and between the registrant and Mitchell Finer, Ph.D., dated as of January 25, 2022

10.11+	Amended and Restated Employment Agreement by and between the registrant and Theodore (Ted) Ashburn, M.D., PhD., dated as of October 6, 2020.	S-1/A	333-248757	10.20	September 28, 2020

10.12+	Employment Agreement by and between the registrant and Christophe Quéva, dated as of October 6, 2020.	S-1/A	333-248757	10.22	September 28, 2020

10.13+	Employment Agreement by and between the registrant and Steve Harbin, dated as of December 7, 2020	S-1	333-252896	10.12	February 9, 2021

10.14†	License Agreement by and between the registrant, Ospedale San Raffaele S.r.l. and Fondazione Telethon, dated as of December 22, 2015, as amended June 30, 2017	S-1	333-248757	10.12	September 11, 2020

10.15†	Exclusive License Agreement by and between the registrant and the University of Pittsburgh, dated as of March 23, 2016, as amended June 30, 2016, November 4, 2016 and October 29, 2019.	S-1	333-248757	10.13	September 11, 2020

10.16†	Biomaterials License Agreement by and between the registrant and the University of Pittsburgh, dated as of September 28, 2016.	S-1	333-248757	10.14	September 11, 2020

10.17†	Non-Exclusive License Agreement by and between the registrant and The Washington University, dated as of July 7, 2016.	S-1	333-248757	10.15	September 11, 2020

10.18†	License Agreement by and between the registrant and Northwestern University, dated as of December 11, 2018, amended as of September 26, 2019.	S-1	333-248757	10.16	September 11, 2020

10.19†	License Agreement by and between the registrant and WuXi Biologics Ireland Limited, dated as of July 25, 2019.	S-1	333-248757	10.17	September 11, 2020

10.20†	Royalty Transfer Agreement by and among the registrant, MPM Foundation and UBS Foundation, dated as of March 31, 2016.	S-1	333-248757	10.18	September 11, 2020

10.21†*	License Agreement by and between the registrant and Gaeta Therapeutics, Ltd., dated as of November 10, 2021

10.22	Hampshire Street Lease by and between the registrant and BMR-Hampshire LLC, dated as of May 10, 2016, as amended November 17, 2016.	S-1	333-248757	10.19	September 11, 2020

10.23	Lease Agreement by and between IQHQ-4 Corporate, LLC and the Company, dated as of December 29, 2020.	S-1	333-252896	10.21	February 9, 2021


10.24	Amended and Restated First Amendment to Lease Agreement by and between IQHQ-4 Corporate, LLC and the registrant, dated as of October 25, 2021	10-Q	001-39575	10.1	November 3, 2021

10.25*	Second Amendment to Lease Agreement by and between IQHQ-4 Corporate, LLC and the registrant, dated as of November 17, 2021

10.26	Open Market Sale AgreementSM by and between the registrant and Jefferies LLC, dated as of November 19, 2021	8-K	001-39575	10.1	November 19, 2021

23.1*	Consent of Ernst & Young LLP, independent registered public accounting firm.

31.1*	Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2*	Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1^	Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2^	Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS*	Inline XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the inline XBRL document)
101.SCH*	Inline XBRL Taxonomy Extension Schema Document
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104*	Cover Page Interactive Data File (embedded within Inline XBRL document)


*	Filed herewith.
+	Indicates management contract or compensatory plan.
†	Portions of this exhibit have been omitted pursuant to Item 601(b)(10)(iv) of Regulation S-K.
^	This certification is being furnished herewith solely to accompany this Annual Report pursuant to 18 U.S.C. Section 1350, and are not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Registrant, whether made before or after the date hereof, regardless of any general incorporation language in such filing.


	ONCORUS, INC.

Date: March 9, 2022	By:	/s/ Theodore (Ted) Ashburn
		Name: Theodore (Ted) Ashburn, M.D., PhD.
		Title: President, Chief Executive Officer and Director (Principal Executive Officer)



NAME	POSITION	DATE

/s/ Theodore (Ted) Ashburn Theodore (Ted) Ashburn, M.D., PhD.	President, Chief Executive Officer and Director (Principal Executive Officer)	March 9, 2022

/s/ John McCabe John McCabe	Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)	March 9, 2022

/s/ Mitchell Finer Mitchell Finer, Ph.D.	Chairman of the Board of Directors	March 9, 2022

/s/ Scott Canute Scott Canute	Director	March 9, 2022

/s/ Luke Evnin Luke Evnin, Ph.D.	Director	March 9, 2022

/s/ Mary Kay Fenton Mary Kay Fenton	Director	March 9, 2022

/s/ Spencer Nam Spencer Nam	Director	March 9, 2022

/s/ Eric Rubin Eric Rubin, M.D.	Director	March 9, 2022

/s/ Barbara Yanni Barbara Yanni	Director	March 9, 2022