Harbor AlphaEdge Large Cap Value ETF
Supplement dated September 18, 2026 to the Prospectus, Summary Prospectus, and Statement of Additional Information, dated March 1, 2026 (as amended)
Harbor ETF Trust’s Board of Trustees has determined to liquidate and dissolve Harbor AlphaEdge Large Cap Value ETF (the
“Fund”). After the close of business on October 15, 2026, subject to applicable law, the Fund will no longer accept creation orders. Trading in
the Fund will be halted prior to market open on October 16, 2026. The Fund is currently scheduled to liquidate at the close of business on or about October 22, 2026 (the “Liquidation Date”).
Shareholders may sell their holdings of the Fund on
NYSE Arca, Inc. (“NYSE Arca”) until market close on October 15, 2026 and may incur typical transaction fees from their broker-dealers. At the
time the liquidation of the Fund is complete, shares of the Fund will be redeemed. If you still hold shares on the Liquidation Date, you will receive a
liquidating distribution of cash in the cash portion of your brokerage account equal to the amount of the net asset value of your shares. Shareholders who
receive a liquidating distribution generally will recognize a capital gain or loss equal to the amount received for their shares over their adjusted basis
in such shares if shares are held in a taxable account. The liquidating distribution received by a shareholder, if any, may be in an amount that is greater
or less than the amount a shareholder might receive if they dispose of their shares on NYSE Arca prior to market close on October 15, 2026. The Fund may or may not, depending upon its circumstances, pay one or more dividends or other distributions prior to or along with the redemption payments. Please consult your personal tax advisor about the potential tax consequences.
In order to ready the Fund for liquidation, the Fund’s
portfolio of investments will be transitioned prior to the planned Liquidation Date to one that consists of all or substantially all cash, cash equivalents
and debt securities with remaining maturities of less than one year. As a result, shareholders should no longer expect that the Fund will seek to achieve
its investment objective of of providing investment results that track, before fees and expenses, the performance of the Harbor AlphaEdge Large Cap Value
Index. Furthermore, during the time between market close on October 15, 2026 and the Liquidation Date, shareholders will be unable to dispose of their
shares on NYSE Arca.
Investors Should Retain This Supplement For Future Reference
S0926.P.SP.SAI.AELV
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