ck0001540305-20230331

Filed Pursuant to Rule 497(e)

File No. 333-179562; 811-22668

Supplement dated

July 14, 2023

to the

AlphaMark Actively Managed Small Cap ETF (SMCP)

(the “Fund”)

Supplement to the Summary Prospectus and Prospectus,

each dated July 31, 2022, as previously supplemented


THIS SUPPLEMENT CONTAINS IMPORTANT INFORMATION ABOUT CHANGES TO THE FUND’S FEES AND EXPENSES, PRINCIPAL INVESTMENT STRATEGIES, AND PRINCIPAL RISKS AS DESCRIBED BELOW.

The Fund’s investment adviser has recommended changes to the Fund’s investment strategies. The Fund currently invests primarily in ETFs (“Underlying ETFs”) that invest in equity securities of small cap companies listed on a U.S. or international exchange (including in emerging markets). Effective on or about July 31, 2023, the Fund will begin invest directly in equity securities listed on a U.S. exchange.

Changes to the Fees and Expenses of the Fund

Effective on or about July 31, 2023, the sections entitled “Fees and Expenses of the Fund” and “Expense Example” of the Summary Prospectus and summary sections entitled “Fees and Expenses of the Fund” and “Expense Example” of the Prospectus will be replaced with the following:

Fees and Expenses of the Fund

The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the Fund (“Shares”). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.


Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees			0.90%
Distribution and/or Service (12b-1) Fees			None
Other Expenses			0.00%
Total Annual Fund Operating Expenses1			0.90%

1 Effective on or about July 31, 2023, the Fund no longer invests in Underlying ETFs and therefore will not be subject to acquired fund fees and expenses, which are the indirect costs of investing in other investment companies. Total Annual Fund Operating Expenses has been restated to reflect current fees and expenses.

Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then continue to hold or redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:


1 Year	3 Years	5 Years	10 Years
$92	$287	$498	$1,108

Filed Pursuant to Rule 497(e)

File No. 333-179562; 811-22668

Changes to the Principal Investment Strategies and Principal Risks of Investing in the Fund

Effective on or about July 31, 2023, the section entitled “Principal Investment Strategies of the Fund” of the Summary Prospectus and summary section entitled “Principal Investment Strategies of the Fund” of the Prospectus will be deleted in its entirety and replaced with the following:

Principal Investment Strategies of the Fund

The Fund is actively managed and invests primarily in equity securities of small cap companies listed on a U.S. exchange and selected by AlphaMark Advisors, LLC, the Fund’s investment adviser (the “Adviser”). Under normal circumstances, the Fund will invest at least 80% of its net assets (plus any borrowings for investment purposes) directly or indirectly in small cap companies. The Fund defines “small cap” companies as companies with a total market capitalization of less than $7 billion at the time of purchase.

The Fund defines “equity securities” to include common and preferred stock, American Depositary Receipts (“ADRs”), and real estate investment trusts (“REITs”).

The Adviser seeks to invest in companies with a proven history of consistent growth, sustainable earnings momentum and the ability to produce a reliable stream of cash flow during all economic cycles. The Adviser uses a “bottom-up” internal stock screening process designed to identify companies that produce reliable cash flow streams and are priced at a level that provides for growth opportunity.

In selecting securities for the Fund, the Adviser considers a company’s debt-to-capital ratio and 3-year average EBITDA margin. The Adviser also considers public analysts’ earnings estimates, seeking to invest in companies with high, positive percentage changes in earnings estimates. The Adviser seeks to invest in companies that are the most undervalued based on these fundamental factors. The Fund maintains a portfolio of approximately 100 companies, each with a maximum weighting of 1.5% at the time of purchase.

When evaluating a security for sale, the Adviser considers the same factors it uses in evaluating a security for purchase and generally sells a security when the Adviser believes the security has become overvalued or when the Adviser believes such securities no longer meet its investment criteria.

Effective on or about July 31, 2023, the section entitled “Principal Risks of Investing in the Fund” of the Summary Prospectus and summary section entitled “Principal Risks of Investing in the Fund” of the Prospectus will be deleted in its entirety and replaced with the following:

Principal Risks of Investing in the Fund

The principal risks of investing in the Fund are summarized below. The principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a “principal risk” of investing in the Fund, regardless of the order in which it appears. As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s Prospectus titled “Additional Information About the Fund.”

•ADR Risk. ADRs involve risks similar to those associated with investments in foreign securities, such as changes in political or economic conditions of other countries and changes in the exchange rates of foreign currencies. ADRs listed on U.S. exchanges are issued by banks or trust companies, and ADRs entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares.

•Equity Market Risk. The equity securities held directly or indirectly in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held indirectly by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers. In addition, local, regional or global events such as war, including Russia’s invasion of Ukraine, acts of terrorism, spread of infectious diseases or other public health issues (such as the global pandemic caused by the COVID-19 virus), recessions, rising inflation, or other events could have a significant negative impact on the Fund and its investments. Such events may affect certain

Filed Pursuant to Rule 497(e)

File No. 333-179562; 811-22668

geographic regions, countries, sectors and industries more significantly than others. Such events could adversely affect the prices and liquidity of the Fund’s portfolio securities or other instruments and could result in disruptions in the trading markets.

•ETF Risks. The Fund is an ETF, and, as a result of an ETF’s structure, it is exposed to the following risks:

◦Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as Authorized Participants (“APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

◦Costs of Buying or Selling Shares. Due to the costs of buying or selling Shares, including brokerage commissions imposed by brokers and bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

◦Trading. Although Shares are listed for trading on The Nasdaq Stock Market, LLC (the “Exchange”) and may be traded on U.S. exchanges other than the Exchange, there can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.

•Foreign Markets Risk. Investments in ADRs that provide exposure to non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, the value of non-U.S. securities may be subject to risk of decline due to foreign currency fluctuations or to political or economic instability. Investments in ADRs also may be subject to withholding or other taxes and may be indirectly subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

•Management Risk. The Fund is actively managed and may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

•REIT Investment Risk. Investments in REITs involve unique risks. REITs may have limited financial resources, may trade less frequently and in limited volume, and may be more volatile than other securities. REITs may be affected by changes in the value of their underlying properties or mortgages or by defaults by their borrowers or tenants. Furthermore, these entities depend upon specialized management skills, have limited diversification and are, therefore, subject to risks inherent in financing a limited number of projects. In addition, the performance of a U.S. REIT may be affected by changes in the tax laws or by its failure to qualify for tax-free pass-through of income.

•Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.

◦Financial Sector Risk. This sector, which includes banks, insurance companies, and financial service firms, can be significantly affected by changes in interest rates, government regulation, the rate of defaults on corporate, consumer and government debt, the availability and cost of capital, and fallout

Filed Pursuant to Rule 497(e)

File No. 333-179562; 811-22668

from the housing and sub-prime mortgage crisis. Banks, in particular, are subject to volatile interest rates, severe price competition, and extensive government oversight and regulation, which may limit certain economic activities available to banks, impact their fees and overall profitability, and establish capital maintenance requirements. In addition, banks may have concentrated portfolios of loans or investments that make them vulnerable to economic conditions that affect that industry. Insurance companies are subject to similar risks as banks, including adverse economic conditions, changes in interest rates, increased competition and government regulation, but insurance companies are more at risk from changes in tax law, government imposed premium rate caps, and catastrophic events, such as earthquakes, floods, hurricanes and terrorist acts. This sector has experienced significant losses in the recent past, and the impact of higher interest rates, more stringent capital requirements, and of recent or future regulation on any individual financial company, or on the sector as a whole, cannot be predicted. In recent years, cyber attacks and technology malfunctions and failures have become increasingly frequent in the financial sector and have caused significant losses.

•Smaller Companies Risk. The equity securities of smaller companies have historically been subject to greater investment risk than securities of larger companies. The prices of equity securities of smaller companies tend to be more volatile and less liquid than the prices of equity securities of larger companies.

Effective on or about July 31, 2023, the sub-section entitled “Additional Information about the Fund — Principal Risks of Investing in the Fund” of the Prospectus will be deleted in its entirety and replaced with the following:

Principal Risks of Investing in the Fund

This section provides additional information regarding the principal risks described in the Fund Summary. As in the Fund Summary, the principal risks below are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk described below is considered a “principal risk” of investing in the Fund, regardless of the order in which it appears. Each of the factors below could have a negative impact on the Fund’s performance and trading prices.

•ADR Risk. The Fund may hold the securities of non-U.S. companies in the form of ADRs. ADRs are negotiable certificates issued by a U.S. financial institution that represent a specified number of shares in a foreign stock and trade on a U.S. national securities exchange, such as the New York Stock Exchange. Sponsored ADRs are issued with the support of the issuer of the foreign stock underlying the ADRs and carry all of the rights of common shares, including voting rights. The underlying securities of the ADRs in the Fund’s portfolio are usually denominated or quoted in currencies other than the U.S. Dollar. As a result, changes in foreign currency exchange rates may affect the value of the Fund’s portfolio. In addition, because the underlying securities of ADRs trade on foreign exchanges at times when the U.S. markets are not open for trading, the value of the securities underlying the ADRs may change materially at times when the U.S. markets are not open for trading, regardless of whether there is an active U.S. market for shares.

•Equity Market Risk. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value as market confidence in and perceptions of their issuers change. These investor perceptions are based on various and unpredictable factors including: expectations regarding government, economic, monetary and fiscal policies; inflation and interest rates; economic expansion or contraction; local, regional or global events such as acts of terrorism or war, including Russia’s invasion of Ukraine; and global or regional political, economic, public health, and banking crises. If you held common stock, or common stock equivalents, of any given issuer, you would generally be exposed to greater risk than if you held preferred stocks and debt obligations of the issuer because common stockholders, or holders of equivalent interests, generally have inferior rights to receive payments from issuers in comparison with the rights of preferred stockholders, bondholders, and other creditors of such issuers.

Beginning in the first quarter of 2020, financial markets in the United States and around the world experienced extreme and, in many cases, unprecedented volatility and severe losses due to the global pandemic caused by COVID-19, a novel coronavirus. The pandemic resulted in a wide range of social and economic disruptions, including closed borders, voluntary or compelled quarantines of large populations, stressed healthcare systems, reduced or prohibited domestic or international travel, and supply chain disruptions affecting the United States and many other countries. Some sectors of the economy and individual issuers experienced particularly large

Filed Pursuant to Rule 497(e)

File No. 333-179562; 811-22668

losses as a result of these disruptions. Although the immediate effects of the COVID-19 pandemic have begun to dissipate, global markets and economies continue to contend with the ongoing and long-term impact of the COVID-19 pandemic and the resultant market volatility and economic disruptions. It is unknown how long circumstances related to the pandemic will persist, whether they will reoccur in the future, whether efforts to support the economy and financial markets will be successful, and what additional implications may follow from the pandemic. The impact of these events and other epidemics or pandemics in the future could adversely affect Fund performance.

•ETF Risks. The Fund is an ETF, and, as a result of an ETF’s structure, it is exposed to the following risks:

◦APs, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as APs. In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

◦Costs of Buying or Selling Shares. Investors buying or selling Shares in the secondary market will pay brokerage commissions or other charges imposed by brokers, as determined by that broker. Brokerage commissions are often a fixed amount and may be a significant proportional cost for investors seeking to buy or sell relatively small amounts of Shares. In addition, secondary market investors will also incur the cost of the difference between the price at which an investor is willing to buy Shares (the “bid” price) and the price at which an investor is willing to sell Shares (the “ask” price). This difference in bid and ask prices is often referred to as the “spread” or “bid-ask spread.” The bid-ask spread varies over time for Shares based on trading volume and market liquidity, and the spread is generally lower if Shares have more trading volume and market liquidity and higher if Shares have little trading volume and market liquidity. Further, a relatively small investor base in the Fund, asset swings in the Fund, and/or increased market volatility may cause increased bid-ask spreads. Due to the costs of buying or selling Shares, including bid-ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

◦Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility or periods of steep market declines. The market price of Fund shares during the trading day, like the price of any exchange-traded security, includes a “bid-ask” spread charged by the exchange specialist, market makers or other participants that trade the Fund shares. In times of severe market disruption, the bid-ask spread can increase significantly. At those times, Fund shares are most likely to be traded at a discount to NAV, and the discount is likely to be greatest when the price of Fund shares is falling fastest, which may be the time that you most want to sell your Fund shares. The Adviser believes that, under normal market conditions, large market price discounts or premiums to NAV will not be sustained because of arbitrage opportunities.

◦Trading. Although Shares are listed for trading on the Exchange and may be listed or traded on U.S. and non-U.S. stock exchanges other than the Exchange, there can be no assurance that an active trading market for such Shares will develop or be maintained. Trading in Shares may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in Shares inadvisable. In addition, trading in Shares on the Exchange is subject to trading halts caused by extraordinary market volatility pursuant to Exchange “circuit breaker” rules, which temporarily halt trading on the Exchange when a decline in the S&P 500® Index during a single day reaches certain thresholds (e.g., 7%, 13%, and 20%). Additional rules applicable to the Exchange may halt trading in Shares when extraordinary volatility causes sudden, significant swings in the market price of Shares. There can be no assurance that Shares will trade with any volume, or at all, on any stock exchange. In stressed market conditions, the liquidity of Shares may begin to mirror the liquidity of the Fund’s underlying portfolio holdings, which can be significantly less liquid than

Filed Pursuant to Rule 497(e)

File No. 333-179562; 811-22668

Shares, and this could lead to differences between the market price of the Shares and the underlying value of those Shares.

•Foreign Markets Risk. Investments in ADRs that provide exposure to non-U.S. companies involve certain risks that may not be present with investments in U.S. companies. For example, investments in non-U.S. companies may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. There may be less information publicly available about a non-U.S. issuer than a U.S. issuer. Securities of non-U.S. companies may be subject to different accounting, auditing, financial reporting and investor protection standards than those of U.S. companies. Investments tied to non-U.S. companies may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. Because legal systems differ, there is also the possibility that it will be difficult to obtain or enforce legal judgments in certain countries. Since foreign exchanges may be open on days when the Fund does not price their Shares, the value of the securities in the Fund’s portfolios may change on days when shareholders will not be able to purchase or sell Shares. Conversely, Shares may trade on days when foreign exchanges are closed. Each of these factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

•Management Risk. The Fund is actively managed and may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

•REIT Investment Risk. Investments in REITs involve unique risks. REITs may have limited financial resources, may trade less frequently and in limited volume, and may be more volatile than other securities. In addition, to the extent the Fund holds interests in REITs, it is expected that investors in the Fund will bear two layers of asset-based management fees and expenses (directly at the Fund level and indirectly at the REIT level). The risks of investing in REITs include certain risks associated with the direct ownership of real estate and the real estate industry in general. These include risks related to general, regional and local economic conditions; fluctuations in interest rates and property tax rates; shifts in zoning laws, environmental regulations and other governmental action such as the exercise of eminent domain; cash flow dependency; increased operating expenses; lack of availability of mortgage funds; losses due to natural disasters; overbuilding; losses due to casualty or condemnation; changes in property values and rental rates; and other factors.

In addition to these risks, residential/diversified REITs and commercial equity REITs may be affected by changes in the value of the underlying property owned by the trusts, while mortgage REITs may be affected by the quality of any credit extended. Further, REITs are dependent upon management skills and generally may not be diversified. REITs are also subject to heavy cash flow dependency, defaults by borrowers and self-liquidation. In addition, REITs could possibly fail to qualify for the beneficial tax treatment available to REITs under the U.S. Internal Revenue Code of 1986, as amended (the “Code”), or to maintain their exemptions from registration under the Investment Company Act of 1940, as amended (the “1940 Act”). The Fund expects that dividends received from a REIT and distributed to Fund shareholders generally will be taxable to the shareholder as ordinary income. The above factors may also adversely affect a borrower’s or a lessee’s ability to meet its obligations to the REIT. In the event of a default by a borrower or lessee, the REIT may experience delays in enforcing its rights as a mortgagee or lessor and may incur substantial costs associated with protecting investments.

•Sector Risk. The Fund’s investing approach may result in an emphasis on certain sectors or sub-sectors of the market at any given time. To the extent the Fund invests more heavily in one sector or sub-sector of the market, it thereby presents a more concentrated risk and its performance will be especially sensitive to developments that significantly affect those sectors or sub-sectors. In addition, the value of Shares may change at different rates compared to the value of shares of a fund with investments in a more diversified mix of sectors and industries. An individual sector or sub-sector of the market may have above-average performance during particular periods, but it may also move up and down more than the broader market. The several industries that constitute a sector may all react in the same way to economic, political or regulatory events. The Fund’s performance could also be affected if the sectors or sub-sectors do not perform as expected. Alternatively, the lack of exposure to one or more sectors or sub-sectors may adversely affect performance.

◦Financial Sector Risk. Companies in the financial sector of an economy, including banks, insurance companies, and financial service firms, are often subject to extensive governmental regulation and

Filed Pursuant to Rule 497(e)

File No. 333-179562; 811-22668

intervention, which may adversely affect the scope of their activities, the prices they can charge and the amount of capital they must maintain. Governmental regulation may change frequently and may have significant adverse consequences for companies in the financial sector, including effects not intended by such regulation. The impact of recent or future regulation in various countries on any individual financial company or on the sector as a whole cannot be predicted.

Certain risks may impact the value of investments in the financial sector more severely than those of investments outside this sector, including the risks associated with companies that operate with substantial financial leverage. Companies in the financial sector may also be adversely affected by increases in interest rates and loan losses, decreases in the availability of money or asset valuations, credit rating downgrades and adverse conditions in other related markets.

Banks, in particular, are subject to volatile interest rates, severe price competition, and extensive government oversight and regulation, which may limit certain economic activities available to banks, impact their fees and overall profitability, and establish capital maintenance requirements. In addition, banks may have concentrated portfolios of loans or investments that make them vulnerable to economic conditions that affect that industry. Insurance companies are subject to similar risks as banks, including adverse economic conditions, changes in interest rates, increased competition and government regulation, but insurance companies are more at risk from changes in tax law and government imposed premium rate caps. Different segments of the insurance industry can be significantly affected by mortality and morbidity rates, environmental clean-up costs and catastrophic events such as earthquakes, floods, hurricanes and terrorist acts.

The financial sector is also a target for cyber attacks and may experience technology malfunctions and disruptions. In recent years, cyber attacks and technology failures have become increasingly frequent and have caused significant losses.

•Small Cap Companies Risk. The securities of small-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large- or mid-capitalization companies. The securities of small-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large- or mid-capitalization stocks or the stock market as a whole. Some small-capitalization companies have limited product lines, markets, and financial and managerial resources and tend to concentrate on fewer geographical markets relative to larger-capitalization companies. There is typically less publicly available information concerning smaller-capitalization companies than for larger, more established companies. Small-capitalization companies also may be particularly sensitive to changes in interest rates, government regulation, borrowing costs and earnings.

Please retain this Supplement with your Summary Prospectus and Prospectus for future reference.