AltShares Trust

ADVISED BY WATER ISLAND CAPITAL

SEPTEMBER 28 • 2023 | ALTSHARES TRUST SUMMARY PROSPECTUS

ALTSHARES MERGER ARBITRAGE ETF

(NYSE Arca, Inc. Symbol: ARB)

Before you invest, you may want to review the Fund's prospectus, which contains more information about the Fund and its risks. You can find the Fund's prospectus, reports to shareholders and other information about the Fund online at www.altsharesetfs.com/arb. You can also get this information at no cost by calling the Fund at (855) 955-1607 or by sending an e-mail request to the SEC at publicinfo@sec.gov. The Fund's prospectus and statement of additional information, both dated September 28, 2023, as supplemented from time to time, are incorporated by reference into this Summary Prospectus.

AltShares Trust

ADVISED BY WATER ISLAND CAPITAL

ALTSHARES MERGER ARBITRAGE ETF

Investment Objective

AltShares Merger Arbitrage ETF (the "Fund") seeks to provide investment results that closely correspond, before fees and expenses, to the performance of its underlying index, the Water Island Merger Arbitrage USD Hedged Index (the "Underlying Index").

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold, and sell Shares of the Fund. 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 Fee					0.75	%
Distribution and/or Service (12b-1) Fees(1)​					None
Other Expenses					0.01	%
Dividend on Short Positions and Interest Expense on Short Positions and/or Borrowings					0.01	%
All Remaining Other Expenses					None
Acquired Fund Fees and Expenses					0.01	%
Total Annual Fund Operating Expenses					0.77	%

⁽¹⁾​  Pursuant to a Rule 12b-1 Distribution and Service Plan (the "Plan"), the Fund may bear a Rule 12b-1 fee not to exceed 0.25% per year of the Fund's average daily net assets. However, no such fee is currently paid by the Fund, and the Board of Trustees has not currently approved the commencement of any payments under the Plan.

Example

The following 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 for the time periods indicated. The example also assumes that the Fund provides a return of 5% each year and that the Fund's expenses are equal to the Total Annual Operating Expenses each year. The example does not reflect any brokerage commissions that you may pay on purchases and sales of Shares. Although your actual costs may be higher or lower, based on these assumptions, whether you do or do not redeem your Shares, your costs would be:

One Year				Three Years				Five Years				10 Years
$	79			$	246			$	428			$	954

Portfolio Turnover

The Fund may pay transaction costs, including 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. Transaction costs, which are not reflected in the annual fund operating expenses or in the example above, affect the Fund's performance. For the fiscal year ended May 31, 2023, the Fund's portfolio turnover rate was 449% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to track the performance of the Underlying Index, which is designed to reflect a global merger arbitrage strategy. The most common approach to merger arbitrage, and the approach the Underlying Index (and by extension the Fund) reflects, is to seek to capture the difference (the "spread") between the price at which the stock of a target company in a publicly announced merger, takeover, tender offer, or leveraged buy-out (the "Target") trades after the announcement of the acquisition and the price the acquiring company (the "Acquirer") has agreed to pay for the stock of the Target.

The Underlying Index is rebalanced and reconstituted twice per month. The Fund reconstitutes and rebalances on the same schedule as the Underlying Index. The Fund's investment adviser, Water Island Capital, LLC (the "Adviser"), generally expects the Underlying Index to include between 30-50 Targets at each reconstitution. To gain exposure to the Underlying Index, the Fund will establish long positions in shares of the Target stocks. When the terms of a transaction call for the exchange of an Acquirer's common stock, the Underlying Index, as a result of the index methodology, will include short exposure in the Acquirer's stock at the deal's exchange ratio. This short exposure is designed to lock in the current deal spread, and to hedge against the risk of a decline in the deal value as a result of a decline in the value of the Acquirer's stock. The Fund may invest in derivatives, such as swaps, to obtain exposure to long and short constituents of the Underlying Index.

The Underlying Index is comprised of securities of United States ("U.S.") and foreign companies of any market capitalization, which may from time to time include small and medium capitalization companies. The Underlying Index is calculated in U.S. dollars. The Underlying Index hedges against fluctuations in the relative value of foreign currencies against the U.S. dollar. The Fund uses forward currency or futures contracts to effectuate these hedges in the Underlying Index. The amount of forward and futures contracts held by the Fund is based on the aggregate exposure of the Fund to each currency.

The Underlying Index may also include an allocation to cash-like instruments, such as money market and similar cash management funds and ultra short-term bond exchange-traded funds ("ETFs"). In addition, when a transaction closes, any allocation in the Underlying Index to the securities of the Target and/or Acquirer will be reallocated to such instruments. The Underlying Index generally only allocates to cash when there are an insufficient number of Targets for inclusion in the Underlying Index and when a transaction represented by a Target in the Underlying Index has been consummated or abandoned. Accordingly, cash allocations in the Underlying Index and Fund are generally removed as part of each Underlying Index reconstitution, though cash allocations may continue to be included if there are an insufficient number of Targets.

Under normal market conditions, the Fund will invest at least 80% of its net assets (including borrowings for investment purposes) in the constituents of the Underlying Index and in financial instruments with economic characteristics similar to such constituents, such as swaps on such constituents. Although the Fund expects to replicate (or hold all components of) the Underlying Index, the Fund reserves the right to use representative sampling to track the Underlying Index. The Fund may invest up to 20% of its net assets in instruments that are not included in the Underlying Index, but that the Adviser believes will help the Fund track the Underlying Index. The Fund may also invest in financial instruments, including swap agreements, futures contracts, ETFs, and options on securities or equity securities indices. With respect to derivatives, the Fund will invest principally in swaps and forward contracts on foreign currencies. The Fund will invest in other funds, such as money market and similar cash management funds and ultra short-term bond ETFs, only to reflect cash allocations by the Underlying Index.

The Fund is non-diversified. To the extent the Underlying Index is concentrated in a particular industry, the Fund is expected to be concentrated in that industry. As of August 31, 2023, the Underlying Index included 42 long positions and 7 short positions in companies with market capitalizations of between $207 million and $429 billion.

The Underlying Index was developed by Water Island Indices LLC (the "Index Provider"), an affiliate of the Adviser. The Index Calculation Agent is Solactive AG, which is not affiliated with the Index Provider, the Fund, or the Adviser. The Index Calculation Agent provides information to the Fund about the constituents of the Underlying Index and does not provide investment advice with respect to the desirability of investing in, purchasing or selling securities.

Principal Risks

As with all funds, investing in the Fund entails risks that could cause the Fund and the Fund's investors to lose money. The principal risks of investing in the Fund are as follows:

Merger Arbitrage Risk: The principal risk associated with the Fund's merger arbitrage investment strategy is that the proposed reorganizations in which the Fund invests may not be completed or may be completed on less favorable terms than originally anticipated, in which case the Fund may realize losses.

Passive Investment Risk: The Fund is not actively managed, does not seek to "beat" the Underlying Index, and does not take temporary defensive positions when markets decline. Therefore, the Fund may not sell a security due to current or projected underperformance of a security, industry, or sector.

Short Sale Risk: The Fund may obtain short exposure by borrowing a security to sell or by trading a derivative instrument, such as a future, forward or swap. The Fund will suffer a loss if it sells a security short and the value of the security rises rather than falls. There is no theoretical ceiling to the price of a shorted security. Therefore, securities sold short have unlimited risk. Short sales also expose the Fund to the risk that it will be required to buy the security sold short (also known as "covering" the short position) at a time when the security has appreciated in value, thus resulting in a loss to the Fund. The Fund's investment performance may also suffer if it is required to close out a short position earlier than it had intended. In addition, the Fund may be subject to expenses related to short sales that are not typically associated with investing in securities directly, such as costs of borrowing. When the Fund sells a security short, it must maintain cash or high-grade securities equal to the margin requirement. As a result, the Fund may maintain high levels of cash or other liquid assets (such as U.S. Treasury bills, money market instruments, certificates of deposit, high quality commercial paper, and long equity positions). The need to maintain cash or other liquid assets could limit the Fund's ability to pursue other opportunities as they arise. Short exposure generally introduces more risk to the Fund than long positions. It is also possible that the Fund's long positions will decline in value at the same time that the value of its short positions increase, thereby increasing potential losses to the Fund.

Market Risk: The value of the Fund's investments, and the net asset value ("NAV") of the Fund, will fluctuate over time, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an entire industry, or the market as a whole. Securities markets may experience short-term or even extended periods of heightened volatility and turmoil. These events could have an adverse effect on the value of the Fund's investments, and investors could lose money due to this price fluctuation. The value of a security may decline due to factors that are specifically related to a particular company, as well as general market conditions, such as real or perceived adverse economic or political conditions, inflation rates, changes in interest rates, or adverse investor sentiment. Geopolitical risks, including terrorism and war, and environmental and public health risks (such as natural disasters, epidemics and pandemics), may add to instability in world economies and markets generally. This uncertainty could lead to corporate events such as mergers, acquisitions, and restructurings breaking. The extent and duration of such market disruptions cannot be predicted, but could magnify the impact of other risks to the Fund, could have a significant adverse impact on the Fund and its investments, and could result in increased volatility of the Fund's NAV.

AltShares Trust

ADVISED BY WATER ISLAND CAPITAL

ALTSHARES MERGER ARBITRAGE ETF

High Portfolio Turnover Risk: The Fund's strategy is expected to involve buying and selling portfolio securities frequently to rebalance the Fund's investment exposures, which may increase brokerage commission costs and reduce performance. High portfolio turnover also exposes shareholders to a higher current realization of short-term gains, which could cause higher taxes.

Hedging Risk: Instruments used to hedge against an opposite position may offset losses, but they also may offset gains. Hedges may not be perfect or may not work as expected, adversely affecting performance.

Concentration Risk: If a large percentage of mergers or other corporate events taking place within the U.S. are within one industry over a given period of time, the Underlying Index may be concentrated in an industry or group of industries or sectors. Because the Fund's assets are expected to be concentrated in an industry or group of industries or sectors to the same extent as the Underlying Index, the Fund is subject to loss due to adverse occurrences affecting that industry or group of industries or sectors. During such a period of concentration, the Fund may be subject to greater volatility than a fund that is more broadly diversified.

Sector Risk: The securities of companies in the same or related businesses ("sectors"), if comprising a significant portion of the Fund's portfolio, may in some circumstances react negatively to market conditions, interest rates and economic, regulatory or financial developments, and may adversely affect the value of the Fund's portfolio, to a greater extent than if such securities comprised a lesser portion of the Fund's portfolio or if the Fund's portfolio was diversified across a greater number of sectors. Some sectors have particular risks that may not affect other sectors.

Equity 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. Preferred stocks are subject to the risk that the dividend on the stock may be changed or omitted by the issuer, and that participation in the growth of an issuer may be limited.

Derivatives Risk: A derivative instrument (such as a forward contract, option (both written and purchased), or swap contract) typically involves leverage and provides exposure to potential gain or loss from a change in the market price of the underlying asset (or a basket of assets or an index) in a notional amount that exceeds the amount of cash or assets required to establish or maintain the derivative instrument. Adverse changes in the value or price of the underlying asset (or basket of assets or index), which the Fund may not directly own, can result in a loss to the Fund substantially greater than the amount invested in the derivative itself. The use of derivative instruments also exposes the Fund to additional risks and transaction costs.

Swap Risk: The Fund may enter into total return swaps to gain investment exposure to the underlying security or securities in a more efficient or economically attractive manner than direct ownership. In a standard "swap" transaction, two parties agree to exchange the returns (or differentials in rates of return) earned or realized on particular predetermined investments or instruments. Certain categories of swap agreements often have terms of greater than seven days and may be considered illiquid. Moreover, the Fund bears the risk of loss of the amount expected to be received under a swap agreement in the event of the default or bankruptcy of a swap agreement counterparty. New and additional government regulation of the swap market could result in higher Fund costs and expenses and could adversely affect the Fund's ability, among other things, to terminate existing swap agreements or to realize amounts to be received under such agreements.

Foreign Securities Risk: The securities of foreign issuers may be less liquid and more volatile than securities of comparable U.S. issuers. Transaction costs may be higher in foreign countries than in the U.S. The U.S. dollar value of foreign securities traded in foreign currencies (and any dividends and interest earned) held by the Fund may be affected favorably or unfavorably by changes in foreign currency exchange rates. Foreign governments and economies often are less stable and foreign companies may not be subject to the same regulatory requirements and accounting, auditing, and financial reporting standards of U.S. companies. As a consequence, there may be less publicly available information about such companies, which may negatively affect the value of foreign securities held by the Fund.

Currency Risk: Fluctuations in exchange rates between the U.S. dollar and foreign currencies may negatively affect an investment in the Fund. Adverse changes in exchange rates may erode or reverse any gains produced by foreign currency-denominated investments and may widen any losses. The return of the forward currency contracts and currency futures contracts utilized for currency hedging may not perfectly offset the actual fluctuations of the foreign currencies relative to the U.S. dollar and may prevent the Fund from realizing gains from an increase in the value of the currency. In addition to currency risk, currency forward/futures contracts may be susceptible to credit risk and other risks. Further, in order to minimize transaction costs, or for other reasons, the Fund's exposure to non-U.S. currencies may not be hedged.

Counterparty Risk: The Fund may enter into various types of derivative contracts with a counterparty that may be privately negotiated in the over-the-counter market. These contracts involve exposure to credit risk because contract performance depends, in part, on the financial condition of the counterparty. If the creditworthiness of the counterparty declines, the Fund may not receive payments owed under the contract, or such payments may be delayed, and the value of the counterparty agreements can be expected to decline, potentially resulting in losses to the Fund.

ETF Risk: As an ETF, the Fund is subject to the following risks:

Premium-Discount Risk: Shares may trade above or below their NAV. Accordingly, investors may pay more than NAV when purchasing Shares or receive less than NAV when selling Shares.

Secondary Market Trading Risk: Investors buying or selling Shares in the secondary market may pay bid-ask spreads, brokerage commissions or other charges, which may be a significant proportional cost for investors seeking to buy or sell Shares. There can be no assurance that an active or liquid trading market for Shares will develop or be maintained or that the Shares will continue to be listed. In addition, trading in Shares on the Exchange may be halted.

Cash Transactions Risk: The Fund may effect redemptions partly or wholly for cash, rather than through in-kind distributions of securities. Accordingly, the Fund may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds and it may recognize gains on sales of portfolio holdings. As a result, an investment in the Fund may be less tax-efficient than an investment in an ETF that primarily or wholly effects redemptions in-kind. Moreover, cash transactions may have to be carried out over several days if the securities markets are relatively illiquid at the time the Fund must sell securities and may involve considerable brokerage fees and taxes. These brokerage fees and taxes, which will be higher than if the Fund redeemed its shares principally in-kind, may be passed on to Authorized Participants ("APs") in the form of transaction fees. As a result, the spreads between the bid and the offered prices of the Fund's shares may be wider than those of shares of ETFs that primarily or wholly transact in-kind.

International Closed Market Trading Risk: Because certain of the Fund's investments trade in markets that are closed when the Fund and Exchange are open, there are likely to be deviations between the current prices of such investments and the prices at which such investments are marked for purposes of the Fund's NAV. As a result, Shares may appear to trade at a significant discount or premium to NAV. In addition, shareholders may not be able to purchase or redeem their shares of the Fund, or purchase or sell shares of the Fund on the Exchange, on days when the NAV of the Fund could be significantly affected by events in the relevant non-U.S. markets.

Flash Crash Risk: Sharp price declines in securities owned by the Fund may trigger trading halts, which may result in the Fund's shares trading in the market at an increasingly large discount to NAV during part (or all) of a trading day or cause the Fund itself to halt trading.

Authorized Participants Concentration Risk: The Fund may have a limited number of financial institutions that may act as APs. To the extent that those APs exit the business or are unable to process creation and/or redemption orders, Shares may trade at a discount to NAV like closed-end fund shares and may face delisting from the Exchange.

Small and Medium Capitalization Securities Risk: Securities issued by small and medium capitalization companies tend to be less liquid and more volatile than stocks of companies with relatively large market capitalizations. These securities may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, these small and medium sized companies may have limited product lines, markets, and financial resources, and may depend upon a relatively small management group.

Investment Company and ETF Risk: Investing in securities issued by other investment companies, including ETFs, involves risks similar to those of investing directly in the securities and other assets held by the investment company or ETF. The Fund will indirectly bear its pro rata share of the fees and expenses incurred by a fund it invests in, including advisory fees. These expenses are in addition to the advisory and other expenses that the Fund bears directly in connection with its own operations.

Non-Diversification Risk: The Fund is non-diversified, which means that it may invest a relatively high percentage of its assets in a limited number of issuers. As a result, the Fund's performance may be more vulnerable to changes in market value of a single issuer or group of issuers and more susceptible to risks associated with the occurrence of adverse events affecting a particular issuer than a diversified fund.

Tracking Error Risk: Tracking error is the divergence of the Fund's performance from that of the Underlying Index, which may be due to the Fund's use of representative sampling or other differences between the Fund's and Underlying Index's holdings, transaction and operating costs, and security valuation procedures. This risk is heightened during times of market volatility.

Large Shareholder Risk: Certain shareholders, including the Adviser or an affiliate of the Adviser, may own a substantial amount of the Fund's Shares. Redemptions by large shareholders could have a significant negative impact on the Fund and transactions by large shareholders may account for a large percentage of the trading volume on the Exchange and may, therefore, have a material upward or downward effect on the market price of the Shares.

AltShares Trust

ADVISED BY WATER ISLAND CAPITAL

ALTSHARES MERGER ARBITRAGE ETF

Performance

The following bar chart and performance table provide some indication of the risks and variability of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual total returns for the past one year and since inception periods compared to the returns of the ICE BofA U.S. 3-Month Treasury Bill Index and Water Island Merger Arbitrage USD Hedged Index. The performance table reflects the performance of the Fund's Shares before and after taxes. The performance shown reflects voluntary fee waivers which had a positive effect on performance and may be discontinued at any time. Without such voluntary fee waivers, performance would have been lower. How the Fund has performed in the past (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated information on the Fund's performance can be obtained by visiting www.altsharesetfs.com/arb.

During the period shown in the bar chart, the highest return for a quarter was 2.26% during the quarter ended June 30, 2021 and the lowest return for a quarter was -1.43% during the quarter ended June 30, 2022. The year-to-date return of the Fund's Shares through June 30, 2023 is -1.32%.

Average Annual Total Returns for Periods Ended December 31, 2022

The table below shows the Fund's average annual total returns compared with those of the ICE BofA U.S. 3-Month Treasury Bill Index and Water Island Merger Arbitrage USD Hedged Index. The table also presents the impact of taxes on the returns of the Fund's Shares. After-tax returns are calculated using the historical highest individual federal marginal income tax rates 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, and after-tax returns shown are not relevant to investors who hold their Fund Shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. Return after taxes on distributions measures the effect of taxable distributions, but assumes the underlying Shares are held for the entire period. Return after taxes on distributions and sale of Fund Shares shows the effect of both taxable distributions and any taxable gain or loss that would be realized if the underlying Shares were purchased at the beginning and sold at the end of the period (for purposes of the calculation, it is assumed that income dividends and capital gain distributions are reinvested at net asset value and that the entire account is redeemed at the end of the period, including reinvested amounts).

Average Annual Total Returns as of 12/31/2022

ALTSHARES MERGER ARBITRAGE ETF				One Year				Since Inception*
Return Before Taxes					2.59	%			3.77	%
Return After Taxes on Distributions					0.91	%			2.69	%
Return After Taxes on Distributions and Sale of Fund Shares					1.53	%			2.44	%
ICE BOFA 3-MONTH TREASURY BILL INDEX (reflects no deduction for fees, expenses, or taxes)**					3.14	%			1.10	%
WATER ISLAND MERGER ARBITRAGE USD HEDGED INDEX (reflects no deduction for fees, expenses, or taxes)					2.39	%			4.40	%

*  The Fund's inception date is May 7, 2020.

**  The ICE BofA U.S. 3-Month Treasury Bill Index tracks the performance of U.S. Treasury Bills publicly issued in the U.S. domestic market with a remaining term to final maturity of less than 3 months. The index is calculated on a total-return basis, is unmanaged and not available for direct investment. The index is not intended to, and does not, parallel the risk or investment style of the Fund's investment strategy.

Investment Adviser

Water Island Capital, LLC serves as the investment adviser ("Adviser") of the Fund.

Portfolio Managers

John Orrico, Eric Becker and Christopher Plunkett have been jointly and primarily responsible for the day-to-day management of the Fund since its inception.

Portfolio Manager				Portfolio Manager Since
Eric Becker				Inception in May 2020
John S. Orrico, CFA, Chief Investment Officer of the Adviser				Inception in May 2020
Christopher Plunkett				Inception in May 2020

Purchase and Sale of Shares

Individual Shares of the Fund may only be bought and sold in secondary market transactions through a broker or dealer at a market price. Because the Shares trade at market prices rather than NAV, Shares may trade at a price greater than NAV (premium) or less than NAV (discount). An investor 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 (i.e., the bid-ask spread).

Tax Information

The Fund's distributions are generally taxable as ordinary income or capital gains, unless you are investing through a tax-exempt or tax-deferred arrangement, such as a 401(k) plan or an individual retirement account, in which case such distributions may be taxable when withdrawn from such account.

Purchases Through Broker-Dealers and Other Financial Intermediaries

If you purchase Shares through a broker-dealer or other financial intermediary, the Adviser or other related companies may pay the intermediary for the sale of Shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend Shares over another investment. Ask your salesperson or visit your financial intermediary's website for more information.