Summary Prospectus by Investment Company - Form 497K

	U.S. Global Jets ETF Trading Symbol: JETS Listed on: NYSE Arca Summary Prospectus April 30, 2024 www.usglobaletfs.com

Before you invest, you may want to review the Fund's prospectus and statement of additional information ("SAI"), which contain more information about the Fund and its risks. The current prospectus and SAI dated April 30, 2024, are incorporated by reference into this Summary Prospectus. You can find the Fund's prospectus, reports to shareholders, and other information about the Fund online at https://www.usglobaletfs.com/fund/jets-etf/. You can also get this information at no cost by calling 1-800-617-0004 or by sending an e-mail request to [email protected].

Investment Objective

The U.S. Global Jets ETF (the "Fund") seeks to track the performance, before fees and expenses, of the U.S. Global Jets Index (the "Index").

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	0.60%
Distribution and/or Service (12b-1) Fees	None
Other Expenses	0.00%
Total Annual Fund Operating Expenses	0.60%

Expense 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
$61	$192	$335	$750

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund's performance. For the fiscal year ended December 31, 2023, the Fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategy

The Fund uses a "passive management" (or indexing) approach to track the performance, before fees and expenses, of the Index. The Index is composed of the exchange-listed common stock (or depositary receipts) of U.S. and international passenger airlines, aircraft manufacturers, airports, terminal services companies, and airline-related internet media and services companies (e.g., websites for purchasing airline tickets), each as determined by independent industry listings (collectively, "Airline Companies"). The Index may include small-, mid-, and large-capitalization companies.

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U.S. Global Jets Index

The Index tracks the performance of Airline Companies across the globe with an emphasis on domestic passenger airlines. The universe of Airline Companies is screened for investibility (e.g., must be listed on a securities exchange), a minimum market capitalization of $100 million, and liquidity (minimum average daily value traded). U.S. Global Investors, Inc., the Fund's investment adviser (the "Adviser"), generally expects the Index to include 50 Airline Companies. The Index is rebalanced and reconstituted quarterly in March, June, September, and December.

At the time of each reconstitution of the Index, each of the four largest U.S. passenger airline companies, as measured primarily by their market capitalization and average dollar value traded and, to a lesser extent, their passenger load factor, receives a 10 percent weighting allocation of the Index. Each of the next eight largest U.S. or Canadian passenger airline companies receives a 3 percent weighting allocation of the Index.

The remaining Airline Companies meeting the Index criteria are then scored based on multiple fundamental factors. Their score is primarily driven by their cash flow return on invested capital (CFROIC) and average dollar value traded with additional inputs based on sales per share growth, gross margins, and sales yield. Each of the eight U.S. or Canadian companies with the highest composite scores receives a 2 percent weighting allocation of the Index, each of the 10 non-U.S. companies with the next highest composite scores receives a 1 percent weighting allocation of the Index, and each of the 20 non-U.S. companies with the next highest composite scores receives a 0.5 percent weighting allocation of the Index.

The Index was developed by U.S. Global Indices, LLC (the "Index Provider"), a wholly-owned subsidiary of the Adviser, in 2015 in anticipation of the commencement of operations of the Fund and is constructed using an objective, rules-based methodology.

The Index calculation agent is Indxx, LLC, which is not affiliated with the Fund, the Adviser, the Index Provider, or the Fund's distributor. The Index calculation agent provides information to the Fund about the constituents of the Index and does not provide investment advice with respect to the desirability of investing in, purchasing or selling securities.

The Fund's Investment Strategy

The Fund attempts to invest all, or substantially all, of its assets in the component securities that make up the Index. Under normal circumstances, at least 80 percent of the Fund's total assets (exclusive of any collateral held from securities lending) will be invested in the component securities of the Index and investments that have economic characteristics that are substantially identical to the economic characteristics of such component securities (e.g., depositary receipts).

The Fund will generally use a "replication" strategy to achieve its investment objective, meaning it generally will invest in all of the component securities of the Index in approximately the same proportion as in the Index. However, the Fund may use a "representative sampling" strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole, when the Adviser believes it is in the best interests of the Fund (e.g., when replicating the Index involves practical difficulties or substantial costs, an Index constituent becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations that apply to the Fund but not to the Index).

The Fund generally may invest in securities or other investments not included in the Index, but which the Adviser believes will help the Fund track the Index. For example, the Fund may invest in securities that are not components of the Index to reflect various corporate actions and other changes to the Index (such as reconstitutions, additions, and deletions).

To the extent the Index concentrates (i.e., holds more than 25 percent of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. The Adviser expects that the Index, and consequently the Fund, will generally be concentrated in the securities of passenger airline companies.

Principal Investment Risks

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 Funds."

•Airline Companies Risk.Airline Companies may be adversely affected by a downturn in economic conditions that can result in decreased demand for air travel. Airline Companies may also be significantly affected by changes in fuel prices, which may be very volatile, the imposition of tariffs, and/or changes in labor relations and insurance costs. Airline Companies may also be highly dependent on aircraft or related equipment from a small number of suppliers, and consequently, issues affecting the availability, reliability, safety, or longevity of such aircraft or equipment (e.g., the

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inability of a supplier to meet aircraft demand or the grounding of an aircraft due to safety concerns) may have a significant effect on the operations and profitability of Airline Companies.

Airline Companies operating airline-related internet media and services (e.g., websites for purchasing airline tickets) face intense competition, which may have an adverse effect on profit margins. Such companies may have limited product lines, markets, financial resources, or personnel, and their products may face obsolescence due to rapid technological developments and frequent new product introduction. Such companies may face unpredictable changes in growth rates, competition for the services of qualified personnel, and competition from foreign competitors with lower production costs. Companies operating websites and other media may be heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect the profitability of these companies.

•Concentration Risk. The Index, and consequently the Fund, is expected to concentrate its investments (i.e., hold more than 25% of its total assets) in the securities of passenger airline companies. As a result, the value of the Fund's shares may rise and fall more than the value of shares of a fund that invests in securities of companies in a broader range of industries. In addition, at times, the airline industry may be out of favor and underperform other industries or groups of industries or the market as a whole.

•Currency Exchange Rate Risk. The Fund's assets may include investments denominated in non-U.S. currencies or in securities that provide exposure to such currencies. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the Fund's investment and the value of your Shares. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the value of an investment in the Fund may change quickly and without warning and you may lose money.

•Depositary Receipt Risk.Depositary Receipts 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. Depositary Receipts listed on U.S. exchanges are issued by banks or trust companies and entitle the holder to all dividends and capital gains that are paid out on the underlying foreign shares ("Underlying Shares"). When the Fund invests in Depositary Receipts as a substitute for an investment directly in the Underlying Shares, the Fund is exposed to the risk that the Depositary Receipts may not provide a return that corresponds precisely with that of the Underlying Shares.

•Emerging Markets Risk. The Fund may invest in companies organized in emerging market nations. Investments in securities and instruments traded in developing or emerging markets, or that provide exposure to such securities or markets, can involve additional risks relating to political, economic, or regulatory conditions not associated with investments in U.S. securities and instruments or investments in more developed international markets. Such conditions may impact the ability of the Fund to buy, sell or otherwise transfer securities, adversely affect the trading market and price for Shares and cause the Fund to decline in value. Less information may be available about companies in emerging markets than in developed markets because such emerging markets companies may not be subject to accounting, auditing and financial reporting standards or to other regulatory practices required by U.S. companies.

•Equity Market Risk.The equity securities held 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 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 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.

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◦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, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant. Because securities held by the Fund may trade on foreign exchanges that are closed when the Fund's primary listing exchange is open, the Fund is likely to experience premiums and discounts greater than those of domestic ETFs.

◦Trading.Although Shares are listed for trading on the NYSE Arca, Inc. (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 Securities Risk. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities 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. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be 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.

•Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region outside the United States or lists and trades its shares on a foreign exchange, it is more likely to be impacted by events or conditions affecting that country or region.

•Index Provider Risk.There is no assurance that the Index Provider, or any agents that act on its behalf, will compile the Index accurately, or that the Index will be determined, maintained, constructed, reconstituted, rebalanced, composed, calculated or disseminated accurately. The Adviser relies upon the Index Provider and its agents to compile, determine, maintain, construct, reconstitute, rebalance, compose, calculate (or arrange for an agent to calculate), and disseminate the Index accurately. Any losses or costs associated with errors made by the Index Provider or its agents generally will be borne by the Fund and its shareholders.

•Large-Cap Companies Risk. The Fund may invest in the securities of large-capitalization companies. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

•Mid-Cap Companies Risk. The Fund may invest in the securities of mid-capitalization companies. As a result, the Fund may be more volatile than funds that invest in larger, more established companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than larger capitalization stocks or the stock market as a whole, but they may also be subject to slower growth than small-capitalization companies during times of economic expansion. Mid-capitalization companies may be particularly sensitive to changes in interest rates, government regulation, borrowing costs, and earnings.

•Non-Diversification Risk. The Fund is considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund's volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund's performance. However, the Fund intends to satisfy the diversification requirements for qualifying as a RIC under Subchapter M of the Code.

•Passive Investment Risk. The Fund is not actively managed, and the Adviser would not sell shares of an equity security due to current or projected underperformance of a security, industry or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology.

•Securities Lending Risk.The Fund may engage in securities lending. There are certain risks associated with securities lending, including the risk that the borrower may fail to return the securities on a timely basis or even the loss of rights in the collateral deposited by the borrower, if the borrower should fail financially. The Fund could also lose money in the event of a decline in the value of collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. As a result, the Fund may lose money.

•Tax Risk. To qualify for the favorable tax treatment generally available to a RIC, the Fund must satisfy, among other requirements described in the SAI, certain diversification requirements. Given the concentration of the Index in a relatively

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small number of securities, it may not always be possible for the Fund to fully implement a replication strategy or a representative sampling strategy while satisfying these diversification requirements. The Fund's efforts to replicate or represent the Index may cause it inadvertently to fail to satisfy the diversification requirements. If the Fund were to fail to satisfy the diversification requirements, it could be eligible for relief provisions if the failure is due to reasonable cause and not willful neglect and if a penalty tax is paid with respect to each failure to satisfy the applicable requirements. Additionally, relief is provided for certain de minimis failures of the diversification requirements where the Fund corrects the failure within a specified period. If the Fund were to fail to qualify as a RIC for a tax year, and the relief provisions are not available, it would be taxed in the same manner as an ordinary corporation, and distributions to its shareholders would not be deductible by the Fund in computing its taxable income. In such case, its shareholders would be taxed as if they received ordinary dividends, although corporate shareholders could be eligible for the dividends received deduction (subject to certain limitations) and individuals may be able to benefit from the lower tax rates available to qualified dividend income. In addition, the Fund could be required to recognize unrealized gains, pay substantial taxes and interest, and make substantial distributions before requalifying as a RIC.

•Tracking Error Risk.As with all index funds, the performance of the Fund and the Index may differ from each other for a variety of reasons. For example, the Fund incurs operating expenses and portfolio transaction costs not incurred by the Index. In addition, the Fund may not be fully invested in the securities of the Index at all times or may hold securities not included in the Index.

Performance

The following performance information indicates some of the risks of investing in the Fund. The bar chart shows the Fund's performance for calendar years ended December 31. The table illustrates how the Fund's average annual returns for the 1-year, 5-year, and since inception periods compare with those of a broad measure of market performance and the Index. The Fund's past performance, before and after taxes, does not necessarily indicate how it will perform in the future. Updated performance information is available on the Fund's website at www.usglobaletfs.com.

Calendar Year Total Returns

During the period of time shown in the bar chart, the Fund's highest quarterly return was 32.31% for the quarter ended December 31, 2020, and the lowest quarterly return was -53.46% for the quarter ended March 31, 2020.

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Average Annual Total Returns

For the Periods Ended December 31, 2023

U.S. Global Jets ETF	1 Year	5 Years	Since Inception (4/28/2015)
Return Before Taxes	11.51%	-7.01%	-2.54%
Return After Taxes on Distributions	11.51%	-7.12%	-2.69%
Return After Taxes on Distributions and Sale of Fund Shares	6.81%	-5.14%	-1.86%
U.S. Global Jets Index (reflects no deduction for fees, expenses, or taxes)	12.49%	-6.47%	-1.99%
S&P 500 Total Return Index (reflects no deduction for fees, expenses, or taxes)	26.29%	15.69%	11.89%

After-tax returns are calculated using the historical highest individual federal marginal income tax rates during the period covered by the table above and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Shares through tax-deferred arrangements such as an individual retirement account ("IRA") or other tax-advantaged accounts. In certain cases, the figure representing "Return After Taxes on Distributions and Sale of Shares" may be higher than the other return figures for the same period. A higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.

Management

Investment Adviser

U.S. Global Investors, Inc. serves as investment adviser to the Fund.

Portfolio Managers

The Fund is managed by a team consisting of the following individuals: Frank E. Holmes, Chief Executive Officer and Director for the Adviser, has been a portfolio manager of the Fund since its inception in April 2015. Ralph P. Aldis, CFA, a Portfolio Manager for the Adviser, has been a portfolio manager of the Fund since its inception in April 2015.

Purchase and Sale of Shares

Shares are listed on the Exchange, and individual Shares may only be bought and sold in the secondary market through brokers at market prices, rather than NAV. Because Shares trade at market prices rather than NAV, Shares may trade at a price greater than NAV (premium) or less than NAV (discount).

The Fund issues and redeems Shares at NAV only in large blocks known as "Creation Units," which only APs (typically, broker-dealers) may purchase or redeem. The Fund generally issues and redeems Creation Units in exchange for a portfolio of securities and/or a designated amount of U.S. cash.

Investors may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase Shares (bid) and the lowest price a seller is willing to accept for Shares (ask) when buying or selling Shares in the secondary market (the "bid-ask spread"). Recent information about the Fund, including its NAV, market price, premiums and discounts, and bid-ask spreads is available on the Fund's website at www.usglobaletfs.com.

Tax Information

Fund distributions are generally taxable as ordinary income, qualified dividend income, or capital gains (or a combination), unless your investment is in an IRA or other tax-advantaged account. Distributions on investments made through tax-deferred arrangements may be taxed later upon withdrawal of assets from those accounts.

Financial Intermediary Compensation

If you purchase Shares through a broker-dealer or other financial intermediary (such as a bank) (an "Intermediary"), the Adviser or its affiliates may pay Intermediaries for certain activities related to the Fund, including participation in activities that are designed to make Intermediaries more knowledgeable about exchange traded products, including the Fund, or for other activities, such as marketing, educational training or other initiatives related to the sale or promotion of Shares. These payments may create a conflict of interest by influencing the Intermediary and your salesperson to recommend the Fund over another investment. Any such arrangements do not result in increased Fund expenses. Ask your salesperson or visit the Intermediary's website for more information.

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