DATED JUNE 8, 2023 SUBJECT TO COMPLETION

On November 13, 2022, TLG Acquisition One Corp., a Delaware corporation (“TLG”), and Eagle Merger Corp., a Delaware corporation and wholly-owned subsidiary of TLG (“Merger Sub”), entered into a Merger Agreement (as amended by the First Amendment to Merger Agreement dated December 23, 2022, the Second Amendment to Merger Agreement dated March 22, 2023, the Third Amendment to Merger Agreement dated June 8, 2023 and as it may be further amended, supplemented or otherwise modified from time to time in accordance with its terms, the “Merger Agreement”) with Electriq Power, Inc., a Delaware corporation (“Electriq”). If the transactions contemplated by the Merger Agreement are completed, Merger Sub will merge with and into Electriq, with Electriq surviving such merger as a wholly-owned subsidiary of TLG (the “Merger”). Upon consummation of the Merger and the other transactions contemplated by the Merger Agreement (together with the Merger, the “Business Combination”), the separate corporate existence of Electriq will cease and the holders of Electriq common stock, preferred stock, options, warrants and other convertible securities (collectively, the “Electriq equityholders”) will become equityholders of TLG, which will change its name to “Electriq Power Holdings, Inc.” in connection with the Business Combination. We refer to TLG after the consummation of the Business Combination as “New Electriq.”

As part of the Merger, Electriq equityholders will receive aggregate merger consideration (the “merger consideration”), consisting of 27,500,000 shares of TLG’s common stock, par value $0.0001 per share (“TLG common stock”), at an assumed value of $10.00 per share, plus (i) 3,391,250 additional shares of TLG common stock, being equal to the quotient obtained by dividing (x) the amount of equity raised by Electriq in any equity, debt or similar investments obtained by Electriq prior to closing of the Merger in connection with a private capital raise, by (y) $8.00 and (ii) 1,356,500 shares of TLG’s Series A Cumulative Redeemable Preferred Stock, par value $0.0001 per share (“TLG preferred stock” or “New Electriq preferred stock”), being equal to the number of shares of Electriq’s Series B Cumulative Redeemable Preferred Stock, par value $0.0001 per share (the “Electriq cumulative preferred stock”), outstanding immediately prior to the closing of the Merger multiplied by the Exchange Ratio (as defined in the Merger Agreement). The TLG preferred stock will have a cumulative dividend, payable in kind, of 15% per share, plus any accrued and unpaid dividends on each such share, and will be subject to mandatory redemption on the third anniversary of the original issue date of such shares, payable either in cash or in TLG common stock, at the option of the holder. As part of the merger consideration, holders of Electriq’s warrants and options not exercised prior to the Merger will receive replacement warrants and options, respectively, to purchase shares of TLG common stock based on the value of the merger consideration per share of Electriq common stock. See the section entitled “The Business Combination” on page 228 of the attached joint proxy statement/consent solicitation statement/prospectus for further information on the consideration being paid to the Electriq equityholders in the Merger.

On June 8, 2023, certain investors entered into subscription agreements with Electriq to purchase shares of Electriq common stock for $17.0 million (the “Pre-Closing Financings”), including (i) $10.0 million from John Michael Lawrie, the Chief Executive Officer of TLG and Chairman of the TLG board of directors, (ii) $4.5 million from an affiliate of an existing Electriq stockholder (the “Additional Investor”) and (iii) $2.5 million in the aggregate from funds managed by GBIF Management Ltd. (“Greensoil”) and another Electriq stockholder (collectively, the “Pre-Closing Electriq Investors”). In addition, on June 8, 2023, certain noteholders of Electriq entered into subscription

agreements with Electriq pursuant to which such investors converted approximately $10.1 million of Electriq notes, including accrued interest (excluding the Lawrie Notes), into shares of Electriq common stock plus additional shares of Electriq common stock and Electriq cumulative preferred stock as an incentive (the “Pre-Closing Loan Conversion”).

In connection with the Pre-Closing Financings and Pre-Closing Loan Conversion, Mr. Lawrie, the Additional Investor, the Pre-Closing Electriq Investors and the Electriq noteholders will receive shares of Electriq common stock and shares of Electriq cumulative preferred stock as an incentive for their investment (the “Electriq Incentive”). Upon conversion in the Merger, the shares of Electriq common stock and Electriq cumulative preferred stock received in the Electriq Incentive will convert into shares of TLG common stock and shares of TLG preferred stock. Please see the section entitled “Summary of the Joint Proxy Statement/Consent Solicitation Statement/Prospectus—Recent Developments—Pre-Closing Financings and Loan Conversion” for further information.

On June 8, 2023 and                     , 2023, certain investors entered into subscription agreements with TLG to purchase 650,000 shares of TLG common stock for $6.5 million (the “Closing Financings”), including (i) $5.0 million from Mr. Lawrie for 500,000 shares of TLG common stock and (ii) $1.5 million from                      for 150,000 shares of TLG common stock. In connection with the Closing Financings, Mr. Lawrie and                      will receive, as an incentive for their investment, 250,000 shares and 75,000 shares, respectively, of TLG preferred stock at closing of the Merger. In addition, Mr. Lawrie entered into a subscription agreement to purchase up to 300,000 shares of TLG common stock at $10.00 per share for up to $3.0 million (the “Post-Closing Lawrie Investment”). To the extent Mr. Lawrie is required to purchase any shares of TLG common stock pursuant to the Post-Closing Lawrie Investment, Mr. Lawrie will receive up to 150,000 shares of TLG preferred stock as an incentive (one (1) share of TLG preferred stock for every two (2) shares of TLG common stock Mr. Lawrie purchases pursuant to the Post-Closing Lawrie Investment). The Post-Closing Lawrie Investment is only required to be funded 90 days after closing of the Merger to the extent the total funded in the Pre-Closing Financings, the Closing Financings, any amounts remaining in the trust account at closing of the Merger and any additional amounts raised by TLG from any other sources is less than $28.0 million in the aggregate. Please see the section entitled “Summary of the Joint Proxy Statement/Consent Solicitation Statement/Prospectus—Recent Developments—Closing Financings and Working Capital Loan Conversion” for further information.

In addition, Mr. Lawrie signed an agreement on June 8, 2023 to convert his two secured convertible promissory notes (the “Lawrie Notes”) in the aggregate amount of $8.5 million into 1,062,500 shares of TLG common stock and 425,000 shares of TLG preferred stock (the “Lawrie Notes Conversion” and, together with the Pre-Closing Financings, the Pre-Closing Loan Conversion, the Closing Financings, the Post-Closing Lawrie Investment and the Working Capital Loan Conversion (defined below) the “Financing Transactions”). The Lawrie Notes Conversion is subject to the closing of the Merger.

On June 8, 2023, Sponsor agreed at the closing of the Merger to (i) relinquish and cancel, for no consideration, an additional 3,270,652 shares of its TLG Class F common stock and all of the 4,666,667 private placement warrants that it received in connection with TLG’s initial public offering (the “Sponsor IPO Private Placement Warrants”) and (ii) convert approximately $8.3 million of working capital loans into approximately 830,300 shares of TLG common stock and 415,150 shares of TLG preferred stock (the “Working Capital Loan Conversion”). The remaining $1.5 million of working capital loans will be converted into 1,000,000 warrants with terms identical to the terms of the Sponsor IPO Private Placement Warrants (the “Working Capital Private Placement Warrants”). Please see the section entitled “Summary of the Joint Proxy Statement/Consent Solicitation Statement/Prospectus—Recent Developments—Closing Financings and Working Capital Loan Conversion” for further information.

Immediately after the effective time of the Merger, the Electriq equityholders (other than Mr. Lawrie) will hold approximately 68.3% of the issued and outstanding TLG common stock, the current stockholders of TLG (including the persons who currently hold shares of TLG Class F common stock and the shares of TLG common stock Mr. Lawrie will receive at the closing of the Merger) will hold approximately 30.7% of the issued and outstanding TLG common stock and the other financing stockholders described in clause (iv) below will hold approximately 1.0% of the issued and outstanding TLG common stock, which pro forma ownership (i) assumes

no holder of TLG common stock issued in TLG’s initial public offering (“Public Shares”) exercises such holder’s Redemption Rights (as defined below) in connection with the Merger, (ii) does not take into account the TLG common stock issuable upon the exercise of the warrants issued in TLG’s initial public offering (the “Public Warrants”), the private placement warrants issued to RBC Capital Markets, LLC in connection with TLG’s initial public offering and the Working Capital Private Placement Warrants, (iii) assumes the exercise of all Electriq warrants and options prior to the closing of the Merger, whether vested or unvested, (iv) assumes TLG raises $3.0 million of additional equity financing through the issuance of 300,000 shares of TLG common stock and 150,000 shares of TLG preferred stock, (v) assumes no shares are issued pursuant to the Post-Closing Lawrie Investment, (vi) assumes the Financing Transactions are consummated and (vii) does not reflect the potential dilutive effect of the TLG preferred stock.

Assuming 3,974,203 of the Public Shares are redeemed for cash (or approximately 50.0% of the outstanding Public Shares as of the date of this joint proxy statement/consent solicitation statement/prospectus), such percentages will be approximately 75.2%, 23.7% and 1.1%, respectively. Assuming 7,804,727 of the Public Shares are redeemed for cash such that the trust account will contain approximately $1.5 million upon consummation of the Business Combination (or 98.2% of the outstanding Public Shares as of the date of this joint proxy statement/consent solicitation statement/prospectus), such percentages will be approximately 83.2%, 15.5% and 1.3%, respectively.

TLG and Electriq cannot complete the Business Combination unless (i) TLG’s stockholders approve the Merger Agreement and the transactions contemplated thereby, including the issuance of TLG common stock and TLG preferred stock to be issued as part of the merger consideration pursuant to the Business Combination, and (ii) Electriq’s stockholders consent to adoption and approval of the Merger Agreement and the transactions contemplated thereby. TLG is sending you this joint proxy statement/consent solicitation statement/prospectus to ask you to vote in favor of these and the other matters described in this joint proxy statement/consent solicitation statement/prospectus.

This joint proxy statement/consent solicitation statement/prospectus provides you with detailed information about the proposed Business Combination. It also contains or references information about TLG and Electriq and certain related matters. You are encouraged to read this joint proxy statement/consent solicitation statement/prospectus carefully. In particular, you should read the “Risk Factors” section beginning on page 38 for a discussion of the risks you should consider in evaluating the proposed Business Combination and how it will affect you.

Pursuant to TLG’s Existing Charter, TLG will provide holders of its Class A common stock with the opportunity to redeem their Public Shares for cash equal to their pro rata share of the aggregate amount on deposit in the Trust Account, which holds certain proceeds of the TLG IPO, as of two business days prior to the consummation of the transactions contemplated by the Business Combination Proposal (including interest earned on the funds held in the Trust Account and not previously released to TLG to pay its taxes). For illustrative purposes, based on funds in the Trust Account of approximately $            million on the TLG Record Date, the estimated per share redemption price would have been approximately $            , excluding additional interest earned on the funds held in the Trust Account and not previously released to TLG to pay taxes. Public stockholders may elect to redeem their shares even if they vote for the Business Combination Proposal. A holder of Public Shares, together with any of his, her or its affiliates or any other person with whom he, she or it is acting in concert or as a “group” (as defined in Section 13(d)(3) of the Exchange Act), will be restricted from seeking Redemption Rights with respect to more than 15% of the Public Shares without the consent of TLG. Accordingly, all Public Shares in excess of 15% held by a public stockholder, together with any affiliate of such holder or any other person with whom such holder is acting in concert or as a “group,” will not be redeemed for cash without the consent of TLG. Sponsor and the other holders of Class F common stock have agreed to waive their Redemption Rights in connection with the consummation of the Merger with respect to any shares of TLG common stock they may hold.

TLG’s stockholders should be aware that effective as of April 10, 2023, Truist Securities, Inc. (“Truist”) resigned from, and ceased or refused to act in, every capacity and relationship in which it was previously described in the joint proxy statement/consent solicitation statement/prospectus. Truist also waived its entitlement to its financial advisory fee of approximately $3.3 million and has also disclaimed responsibility for any part of the joint proxy statement/consent solicitation statement/prospectus. Effective as of May 10, 2023, RBC Capital Markets, LLC (“RBC), the sole underwriter of TLG’s initial public offering, resigned from, and ceased or refused to act in, every capacity and relationship in which it was previously described in the joint proxy statement/consent solicitation statement/prospectus and waived its entitlement to the deferred underwriting fee of $14.0 million. The primary services rendered by Truist in connection with the Business Combination included serving as financial advisor to the TLG Board, structuring agent in connection with the financings related to the Business Combination, supporting the preparation of the investor presentations at the direction of TLG’s management and providing general advisory services in the context of proposed targets of TLG. RBC had not been formally retained in connection with the Business Combination. TLG stockholders should be aware that the resignation of Truist and the waiver of the deferred underwriting fee by RBC may be an indication that they do not want to be associated with the disclosure in the joint proxy statement/consent solicitation statement/prospectus or the transactions contemplated thereby, and TLG stockholders should not place any reliance on the participation of these banks prior to such resignation and fee waiver in the transactions contemplated in the joint proxy statement/consent solicitation statement/prospectus. Please see the section entitled “Summary of the Joint Proxy Statement/Consent Solicitation Statement/Prospectus—Recent Developments” for additional information.

On November 13, 2022, TLG Acquisition One Corp., a Delaware Corporation (“TLG”), and Eagle Merger Corp., a Delaware corporation and wholly-owned subsidiary of TLG (“Merger Sub”), entered into a Merger Agreement (as amended by the First Amendment to Merger Agreement dated December 23, 2022, the Second Amendment to Merger Agreement dated March 22, 2023, the Third Amendment to Merger Agreement dated June 8, 2023 and as it may be further amended, supplemented or otherwise modified from time to time in accordance with its terms, the “Merger Agreement”) with Electriq Power, Inc., a Delaware corporation (“Electriq”). If the transactions contemplated by the Merger Agreement are completed, Merger Sub will merge with and into Electriq, with Electriq surviving such merger as a wholly-owned subsidiary of TLG (the “Merger”). Upon consummation of the Merger and the other transactions contemplated by the Merger Agreement (together with the Merger, the “Business Combination”), the separate corporate existence of Electriq will cease and the holders of Electriq common stock, preferred stock, options, warrants and other convertible securities (collectively, the “Electriq equityholders”) will become equityholders of TLG, which will change its name to “Electriq Power Holdings, Inc.” in connection with the Business Combination. We refer to TLG after the consummation of the Business Combination as “New Electriq.”

The joint proxy statement/consent solicitation statement/prospectus describes the proposed Business Combination and the actions to be taken in connection with the Business Combination and provides additional information about the parties involved. Please give this information your careful attention. A copy of the Merger Agreement, the First Amendment to Merger Agreement, the Second Amendment to Merger Agreement and the Third Amendment to Merger Agreement are attached to the joint proxy statement/consent solicitation statement/prospectus as Annex A, Annex A-1, Annex A-2 and Annex A-3, respectively.

The Electriq Board has considered the Business Combination and the terms of the Merger Agreement and has determined unanimously that the Business Combination and the Merger Agreement are advisable, fair to and in the best interests of Electriq and Electriq’s stockholders and recommends that Electriq’s stockholders adopt the Merger Agreement and approve the Business Combination by submitting a written consent. As described in the joint proxy statement/consent solicitation statement/prospectus, certain stockholders of Electriq, whose ownership interests collectively represent the outstanding shares of Electriq common stock and Electriq non-cumulative preferred stock sufficient to approve the Business Combination on behalf of Electriq, are parties to the Support Agreement with TLG whereby such stockholders agreed to vote all of their shares of Electriq common stock and Electriq pre-2023 preferred stock in favor of approving the Business Combination and other proposed transactions contemplated by the Merger Agreement.

“Closing Financings” are to the purchase of an aggregate of 650,000 shares of TLG common stock for $6.5 million at Closing, including (i) $5.0 million from Mr. Lawrie for 500,000 shares of TLG common stock, together with 250,000 shares of TLG preferred stock as an incentive, and (ii) $1.5 million from                      for 150,000 shares of TLG common stock, together with 75,000 shares of TLG preferred stock as an incentive;

“Completion Window” are to the period beginning on the closing date of the TLG IPO and ending on the 24-month anniversary of such date during which TLG seeks to complete an initial business combination (as such period may be extended pursuant to one additional monthly Extension to August 1, 2023), pursuant to the terms of its Existing Charter;

“Electriq convertible securities” are to the Electriq options, the Electriq convertible instruments, the Lawrie Note and the Electriq warrants, other than the Electriq cumulative preferred stock;

“Electriq cumulative preferred stock” are to shares of the Series B Cumulative Redeemable Preferred Stock of Electriq, par value $0.0001 per share;

“Electriq pre-2023 preferred stock” are to shares of the Seed Preferred of Electriq, par value $0.0001 per share, the Seed-1 Preferred of Electriq, par value $0.0001 per share, and the Seed-2 Preferred of Electriq, par value $0.0001 per share;

“Electriq preferred stock” are to shares of Electriq cumulative preferred stock and Electriq pre-2023 preferred stock;

“Electriq warrants” are to the warrants to purchase Electriq common stock, whether vested or not vested, that are issued and outstanding immediately prior to the Effective Time, which will be assumed by New Electriq upon consummation of the Merger;

“Exchange Ratio” are to a fraction (a) the numerator of which is the merger consideration and (b) the denominator of which is the Total Company Shares Outstanding;

“Financing Transactions” are to the Pre-Closing Financings, the Pre-Closing Loan Conversion, the Closing Financings, the Lawrie Notes Conversion, the Post-Closing Lawrie Investment and the Working Capital Loan Conversion;

“Greensoil” are to GBIF Management Ltd., which manages funds which are the owners of a majority of the shares of Electriq pre-2023 preferred stock;

“Lawrie Notes” are to certain secured convertible promissory notes to be issued by Electriq in favor of John Michael Lawrie, as contemplated by that certain Amended and Restated Securities Purchase Agreement, dated December 23, 2022, as amended on March 22, 2023, between Electriq and John Michael Lawrie;

“Lawrie Notes Capital Raise” are to the sale by Electriq to John Michael Lawrie of the Lawrie Notes;

“Lawrie Notes Conversion” are to the conversion of the Lawrie Notes into 1,062,500 shares of TLG common stock and 425,000 shares of TLG preferred stock, which is subject to the Closing;

“New Electriq preferred stock” are to shares Series A Cumulative Redeemable Preferred Stock, par value $0.0001 per share, of New Electriq after the Merger;

“New Electriq Private Placement Warrants” are to (i) the 2,000,000 Private Placement Warrants issued to RBC Capital Markets, LLC in a private placement simultaneously with the closing of the TLG IPO after the assumption of such warrants by New Electriq at the Effective Time together with (ii) the 1,000,000 Private Placement Warrants to be issued to Sponsor in connection with the Working Capital Loan Conversion;

“Post-Closing Lawrie Investment” are to the purchase by Mr. Lawrie of up to 300,000 shares of TLG common stock at $10.00 per share, together with up to 150,000 shares of TLG preferred stock as an incentive, for up to $3.0 million, which is only required to be funded 90 days after closing of the Merger to the extent the total funded in the Pre-Closing Financings, the Closing Financings plus any amounts remaining in the Trust Account at closing of the Merger and any additional amounts raised by TLG from any other sources is less than $28.0 million in the aggregate;

“Pre-Closing Financings” are to the purchase of an aggregate of shares of Electriq common stock for $17.0 million, together with shares of Electriq cumulative preferred stock as an incentive, including (i) $10.0 million from Mr. Lawrie, (ii) $4.5 million from an affiliate of an existing Electriq stockholder (the “Additional Investor”), and (iii) $2.5 million in the aggregate from funds managed by Greensoil, and another Electriq stockholder (collectively, the “Pre-Closing Electriq Investors”);

“Pre-Closing Loan Conversion” are to the conversion of approximately $10.1 million of Electriq notes, including accrued interest (excluding the Lawrie Notes), to shares of Electriq common stock plus additional shares of Electriq common stock and Electriq cumulative preferred stock as an incentive;

“Private Capital Raise” are to any equity investments obtained by Electriq prior to Closing in connection with a private capital raise;

“Private Placement Warrants” are to (i) the 4,666,667 warrants to purchase shares of Class A common stock issued to Sponsor in a private placement simultaneously with the closing of the TLG IPO, which will be

relinquished and cancelled for no consideration at the Effective Time, (ii) 2,000,000 warrants to purchase shares of Class A common stock issued to RBC Capital Markets, LLC in a private placement simultaneously with the closing of the TLG IPO, which will be assumed by New Electriq at the Effective Time, and (iii) 1,000,000 warrants to purchase shares of TLG Class A common stock to be issued to Sponsor in connection with the Working Capital Loan Conversion, which will be assumed by New Electriq at the Effective Time;

“RBC” are to RBC Capital Markets, LLC;

“Retained Sponsor Shares” are to 1,090,217 shares of TLG Class F common stock that will not be relinquished by Sponsor prior to the Closing, which will convert into 1,090,217 shares of New Electriq common stock at Closing;

“TLG capital stock” are to the TLG common stock and the TLG preferred stock;

“TLG preferred stock” are to the shares Series A Cumulative Redeemable Preferred Stock, par value $0.0001 per share, of New Electriq after the Merger, which will have substantially the same features as the Electriq cumulative preferred stock;

“Total Company Shares Outstanding” are to, without duplication, as of immediately before the Effective Time, the sum of (a) the number of issued and outstanding shares of Electriq common stock (after giving effect to the conversion of Electriq pre-2023 preferred stock and the conversion of all Electriq SAFEs and any Electriq stock options and Electriq warrants that are converted to Electriq common stock prior to the Closing), (b) treating all outstanding Electriq convertible securities as fully vested (as applicable) and as if the Electriq convertible securities (other than the Lawrie Notes) had been converted, exchanged or exercised in full as of the Effective Time (calculated using the treasury stock method of accounting);

“Units” are to the units sold in the TLG IPO (whether they were purchased in the TLG IPO or thereafter in the open market) with each unit consisting of one Public Share and one-third of one Public Warrant;

“Warrants” are to the Public Warrants and the Private Placement Warrants, collectively; and

“Working Capital Loan Conversion” are to the conversion of approximately $9.8 million of working capital loans, comprised of (i) approximately $8.3 million of working capital loans at Closing into approximately 830,300 shares of TLG common stock and 415,150 shares of TLG preferred stock as an incentive and (ii) approximately $1.5 million of working capital loans for 1,000,000 Private Placement Warrants.

TLG will hold the Special Meeting to, among other things, obtain the approvals required for the Business Combination, and you are receiving this joint proxy statement/consent solicitation statement/prospectus in connection with such meeting. See “The Merger Agreement” beginning on page 279. In addition, a copy of the Merger Agreement, the First Amendment to Merger Agreement, the Second Amendment to Merger Agreement and the Third Amendment to Merger Agreement are attached to this joint proxy statement/consent solicitation statement/prospectus as Annex A, Annex A-1, Annex A-2 and Annex A-3, respectively. We urge you to read this joint proxy statement/consent solicitation statement/prospectus carefully, including the Annexes and the other documents referred to herein, in their entirety.

The primary services rendered by Truist in connection with the Business Combination included serving as financial advisor to the TLG Board, structuring agent in connection with the financings related to the Business Combination, supporting the preparation of the investor presentations at the direction of TLG’s management and providing general advisory services in the context of proposed targets of TLG. RBC had not been formally retained in connection with the Business Combination. Truist and RBC waived their entitlement to certain fees which would be owed upon completion of the Business Combination, which were comprised of approximately $3.3 million for Truist, as a financial advisory fee, and $14.0 million for RBC, as a deferred underwriting fee. Such fee waivers for services already rendered are unusual. As a result of their resignation and the waiver of fees, the transaction fees payable by TLG at the consummation of the Business Combination will be reduced by an aggregate of approximately $17.3 million. RBC received underwriting fees in connection with the TLG IPO, but neither Truist nor RBC has received or will receive any fees in connection with the Business Combination, notwithstanding that their services have been largely complete and, as such, their fee waivers could be characterized as gratuitous upon completion of the Business Combination.

Truist claims no remaining role in the Business Combination and disclaimed any responsibility for any portion of this joint proxy statement/consent solicitation statement/prospectus. RBC has also disclaimed any responsibility for any portion of this joint proxy statement/consent solicitation statement/prospectus. Furthermore, TLG and, following completion of the Business Combination, New Electriq, will remain liable for the provisions of the engagement letter with Truist and the underwriting agreement with RBC that survive their resignation, including, for example, with respect to indemnity and contribution.

It is the understanding of both TLG and Electriq that the SEC has received similar resignation letters from investment banks in connection with other business combination transactions involving SPACs. When a financial institution is named in a registration statement, it may presume a level of due diligence and independent analysis on the part of such financial institution ordinarily associated with a professional engagement. The withdrawal of Truist and the waiver of the deferred underwriting fee by RBC indicates that they do not want to be associated with the disclosure or the underlying business analysis related to this transaction, and the resignation of these banks from other business combination transactions involving SPACs indicates that they do not want to be associated with such disclosure or business analysis for any companies undergoing such transactions. Investors should not place any reliance upon the fact that either Truist or RBC previously were involved with the Business Combination.

Because Truist’s financial advisory services on the Business Combination were substantially complete, and RBC never rendered any such financial advisory services on the Business Combination, TLG and Electriq do not believe that these resignations will impact in any way the consummation of the Business Combination and neither TLG nor Electriq expects to hire additional financial advisors in connection with the Business Combination. Nonetheless, it is possible that Truist’s resignation or RBC’s waiver may adversely affect market perception of the Business Combination generally. If market perception of the Business Combination is negatively impacted, an increased number of TLG stockholders may vote against the proposed Business Combination or seek to redeem their shares for cash.

See “Business Combination — Merger Consideration; Conversion of Shares” beginning on page 228 for a more detailed description of the treatment of each security of Electriq in connection with the Merger.

On June 8, 2023 and                     , 2023, certain investors entered into subscription agreement with TLG to purchase an aggregate of 650,000 shares of TLG common stock for $6.5 million, including (i) $5.0 million from Mr. Lawrie for 500,000 shares of TLG common stock and (ii) $1.5 million from                      for 150,000 shares of TLG common stock. In connection with the Closing Financings, Mr. Lawrie and                      will receive 250,000 shares and 75,000 shares, respectively, of TLG preferred stock at Closing. In addition, Mr. Lawrie entered into a subscription agreement to purchase up to 300,000 shares of TLG common stock at $10.00 per share for up to $3.0 million. To the extent Mr. Lawrie is required to purchase any shares of TLG common stock pursuant to the Post-Closing Lawrie Investment, Mr. Lawrie will receive up to 150,000 shares of TLG preferred stock as an incentive (one (1) share of TLG preferred stock for every two (2) shares of TLG common stock Mr. Lawrie purchases pursuant to the Post-Closing Lawrie Investment). The Post-Closing Lawrie Investment is only required to be funded 90 days after Closing to the extent the total funded in the Pre-Closing Financings, the Closing Financings plus any amounts remaining in the trust account at Closing and any additional amounts raised by TLG from any other sources is less than $28.0 million in the aggregate.

On June 8, 2023, certain investors entered into subscription agreements with Electriq to purchase shares of Electriq common stock for $17.0 million (the “Pre-Closing Financings”), including (i) $10.0 million from Mr. Lawrie, the Chief Executive Officer of TLG and Chairman of the TLG board of directors, (ii) $4.5 million from the Additional Investor, and (iii) $2.5 million in the aggregate from funds managed by Greensoil and another Electriq stockholder (collectively, the “Pre-Closing Electriq Investors”). In addition, on June 8, 2023, certain noteholders of Electriq entered into subscription agreements with Electriq pursuant to which such investors converted approximately $10.1 million of Electriq notes, including accrued interest (excluding the Lawrie Notes), into shares of Electriq common stock plus additional shares of Electriq common stock and Electriq cumulative preferred stock as an incentive (the “Pre-Closing Loan Conversion”). In connection with the Pre-Closing Financings and Pre-Closing Loan Conversion, Mr. Lawrie, the Additional Investor, the Pre-Closing Electriq Investors and the Electriq noteholders will receive shares of Electriq common stock and shares of a new series of Electriq preferred stock as an incentive for their investment (the “Electriq Incentive”). Upon conversion in the Merger, the shares of Electriq common stock and Electriq cumulative preferred stock received in the Electriq Incentive will convert into shares of TLG common stock and shares of TLG preferred stock, respectively, in an amount equal to one (1) multiplied by the Exchange Ratio. Please see the section entitled “Summary of the Joint Proxy Statement/Consent Solicitation Statement/Prospectus–Recent Developments–Pre-Closing Financings and Loan Conversion” for further information.

Each person that enters into a subscription agreement to purchase (i) shares of Electriq common stock prior to Closing will receive for every two shares of Electriq common stock purchased, one share of Electriq cumulative preferred stock and 0.5 shares of Electriq common stock and (ii) shares of TLG common stock at $10.00 per share or a non-redemption agreement will receive, at the closing of the Merger, for every two shares of TLG common stock purchased or not redeemed, one share of TLG preferred stock. The shares of Electriq cumulative preferred stock have a 15% dividend and are subject to mandatory redemption after three years, in cash or shares of Electriq common stock, at the election of the investor. Upon redemption the investor will receive up to ten shares of Electriq common stock based upon the accrued value of a share of Electriq cumulative preferred stock divided by the fair market value of a share of Electriq common stock. The shares of TLG preferred stock have a 15% cumulative dividend, payable in kind in shares of TLG preferred stock, and are subject to mandatory redemption after three years, in cash or shares of TLG common stock, at the election of the investor. If the holder of TLG preferred stock elects to receive TLG common stock upon such mandatory redemption, for each share of Electriq preferred stock, the investor will receive up to ten shares of TLG common stock based upon the accrued value of a share of TLG preferred stock divided by the market value of a share of TLG common stock. The TLG Board has determined that these incentives provide certain investors with an effective issuance price per share of TLG common stock equal to $5.71.

Based on this effective issuance price, the exercise price of the Warrants will be adjusted in connection with the Closing. This adjustment is based on a provision of our warrant agreement that requires such adjustment when additional shares of TLG common stock are issued for capital raising purposes in connection with the closing of our initial business combination at a newly issued price of less than $9.20 per share of TLG common stock. The exercise price of our Warrants is required to be adjusted to be equal to 115% of the newly issued price of $5.71 per share. Under our warrant agreement, the exercise price of our Warrants will be adjusted at the closing of the Business Combination from $11.50 per share to $6.57 per share of TLG common stock. Such adjustment could make it more difficult for us to raise capital, cause the market price of New Electriq securities to decline significantly or cause a higher level of redemptions in connection with our Business Combination. Please see the section entitled “Risk Factors—The proposed incentive structure results in the issuance of shares of TLG common stock at an effective price substantially below the redemption price, which could have a negative impact on the value of the TLG common stock after the closing of the Business Combination” and “Risk Factors—Risks Related to TLG and the Business Combination—Securities of companies formed through SPAC mergers such as the Business Combination may experience a material decline in price relative to the share price of the SPAC prior to the Merger and the $10.00 per share value attributed to such shares in calculating the merger consideration.”

Each Financing Person that enters into a subscription agreement to purchase shares of TLG common stock at $10.00 per share or a non-redemption agreement will receive, at the closing of the Merger, for each two (2) shares of TLG common stock purchased or not redeemed, respectively, one (1) share of TLG preferred stock. Please see the section entitled “Risk Factors—Risks Related to TLG and the Business Combination—Securities of companies formed through SPAC mergers such as the Business Combination may experience a material decline in price relative to the share price of the SPAC prior to the Merger and the $10.00 per share value attributed to such shares in calculating the merger consideration.”

In addition, the following table illustrates varying ownership levels in New Electriq common stock immediately following the consummation of the Business Combination based on the varying levels of redemptions by the TLG public stockholders on a fully diluted basis, assuming (i) each holder of New Electriq preferred stock elects to receive TLG common stock rather than cash on mandatory redemption and (ii) full exercise or conversion of (A) the Public Warrants, (B) the Private Placement Warrants (owned by RBC) and (C) the warrants of New Electriq that are expected to be issued to satisfy $1,500,000 of the outstanding Working Capital Loans. The following table does not include the potential dilutive impact of the exercise of the Electriq warrants and options, as the pro forma ownership scenarios presented herein already assume the exercise of all Electriq warrants and options.

(1) are generally not redeemable by us so long as they are held by Sponsor, RBC or their permitted transferees; (2) may be exercised by the holders on a cashless basis so long as they are held by Sponsor, RBC or their permitted transferees; (3) with respect to the Private Placement Warrants held by RBC, will not be exercisable more than five years from the commencement of sales in the TLG IPO in accordance with FINRA Rule 5110(g)(8)(A); and (4) are entitled to registration rights (including the shares of Class A common stock issuable upon exercise of these Warrants).

In addition, we may redeem your Public Warrants commencing 90 days after they become exercisable for $0.10 per Public Warrant upon a minimum of 30 days’ prior written notice of redemption if the last reported sale price of the Class A common stock equals or exceeds $10.00 per share (as adjusted per stock splits, stock dividends, reorganizations, recapitalizations and the like) on the trading day prior to the date on which we send the notice of such redemption to the warrant holders and the Private Placement Warrants are also concurrently exchanged at the same price; provided that holders will be able to exercise their Public Warrants prior to redemption for a number of shares of New Electriq common stock determined based on the redemption date and the fair market value of the New Electriq common stock as described in the prospectus related to the TLG IPO. Any such redemption may have similar consequences to a cash

TLG’s stockholders should be aware that effective as of April 10, 2023, Truist resigned from, and ceased or refused to act in, every capacity and relationship in which it was previously described in this joint proxy statement/consent solicitation statement/prospectus and waived all rights to all fees under its engagement letter with TLG. Effective as of May 10, 2023, RBC, the sole underwriter of the TLG IPO, resigned from, and ceased or refused to act in, every capacity and relationship in which it was previously described in this joint proxy statement/consent solicitation statement/prospectus and waived its entitlement to the deferred underwriting fee of $14.0 million. TLG stockholders should not place any reliance on the participation of these banks prior to such resignation and fee waiver in the transactions contemplated in this joint proxy statement/consent solicitation statement/prospectus. Please see the section entitled “Summary of the Joint Proxy Statement/Consent Solicitation Statement/Prospectus—Recent Developments” for additional information.

TLG’s stockholders should be aware that effective as of April 10, 2023, Truist resigned from, and ceased or refused to act in, every capacity and relationship in which it was previously described in this joint proxy statement/consent solicitation statement/prospectus and waived all rights to all fees under its engagement letter with TLG. Effective as of May 10, 2023, RBC, the sole underwriter of the TLG IPO, resigned from, and ceased or refused to act in, every capacity and relationship in which it was previously described in this joint proxy statement/consent solicitation statement/prospectus and waived its entitlement to the deferred underwriting fee of $14.0 million. The primary services rendered by Truist in connection with the Business Combination included serving as financial advisor to the TLG Board, structuring agent in connection with the financings related to the Business Combination, supporting the preparation of the investor presentations at the direction of TLG’s management and providing general advisory services in the context of proposed targets of TLG. RBC had not been formally retained in connection with the Business Combination. TLG stockholders should be aware that the resignation of Truist and the waiver of the deferred underwriting fee by RBC may be an indication that they do not want to be associated with the disclosure in this joint proxy statement/consent solicitation statement/prospectus or the transactions contemplated thereby, and TLG stockholders should not place any reliance on the participation of these banks prior to such resignation and fee waiver in the transactions contemplated in this joint proxy statement/consent solicitation statement/prospectus. Please see the section entitled “Summary of the Joint Proxy Statement/Consent Solicitation Statement/Prospectus—Recent Developments” for additional information.

On February 1, 2021, TLG completed its initial public offering of Units at a price of $10.00 per Unit, raising total gross proceeds of $400.0 million. Simultaneously with the consummation of the TLG IPO, TLG completed a private placement of warrants to purchase shares of Class A common stock to its Sponsor and RBC Capital Markets, LLC, the underwriter of the TLG IPO, raising total gross proceeds of $10.0 million. Since the TLG IPO, TLG’s activity has been limited to the evaluation of business combination candidates.

On December 19, 2022, TLG obtained stockholder approval to allow the Company to extend the time by which the Company must complete its initial business combination on a monthly basis up to six times from February 1, 2023 to August 1, 2023 by depositing into the Trust Account the lesser of (i) an aggregate of $600,000 or (ii) $0.06 for each issued and outstanding public share that has not been redeemed for each one-month Extension. In connection with the approval of the Extension, the holders of 32,051,595 shares of Class A common stock properly exercised their right to redeem such shares (the “Redemptions”) for a pro rata portion of the funds held in the Trust Account. As a result, approximately $324.4 million (or approximately $10.12 per share) was withdrawn from the Trust Account to pay such holders and approximately $83.0 million remained in the Trust Account as of March 31, 2023. As of the date of this joint proxy statement/consent solicitation statement/prospectus, TLG has 7,948,405 shares of Class A common stock outstanding.

Under TLG’s Existing Charter, the Business Combination may be consummated only if TLG would have at least $5,000,001 of net tangible assets upon consummation of the Business Combination (after giving effect to all redemption requests from holders of Public Shares that properly require redemption of their shares for cash).

For a discussion of U.S. federal income tax considerations for holders of Public Shares with respect to the exercise of the Redemption Rights, see “U.S. Federal Income Tax Considerations—Exercise of the Redemption Rights” beginning on page 310.

Holders of shares of Electriq stock who (i) do not consent to the adoption of the Merger Agreement, (ii) follow the procedures set forth in Section 262 of the DGCL (including making a written demand of appraisal to Electriq within 20 days after the date of mailing of the notice of appraisal rights) and (iii) have not otherwise waived the appraisal rights, will be entitled, under Section 262 of the DGCL, to have their shares appraised by the Delaware Court of Chancery and to receive payment in cash of the “fair value” of the shares, exclusive of any element of value arising from the accomplishment or expectation of the Merger, together with interest, if any, to be paid on the amount determined to be “fair value.” See Section 262 of the DGCL attached as Annex L.

Attention: SPAC Redemption Team

Email: spacredemptions@continentalstock.com