Prospectus by Investment Company (Form 497)

REX-OSPREY^TM ETH + STAKING ETF (ESK)

REX-OSPREY^TM SOL + STAKING ETF (SSK)

(each, a "Fund" and collectively, the "Funds")

Each a series of

ETF Opportunities Trust

Supplement dated July 11, 2025

to the Statement of Additional Information ("SAI")

dated June 27, 2025

as supplemented from time to time

The changes described below are being made to the SAI.

ADDITIONAL INFORMATION ABOUT PURCHASES AND SALES

Effective July 14, 2025, the second paragraph in the Procedures for Creation of Creation Units section is deleted and replaced with the following information:

The Distributor will process orders to purchase Creation Units received by 10:30 a.m. New York time on the trade date ("Closing Time"), as long as they are in proper form. If an order to purchase Creation Units is received in proper form by Closing Time, then it will be processed that day. Purchase orders received in proper form after Closing Time will be processed on the following Business Day and will be priced at the NAV determined on that day. Custom orders must be received by the Transfer Agent no later than 10:30 a.m. New York time on the trade date. In the case of an In Kind Creation, a custom order may be placed by an Authorized Participant in the event that the Trust permits the substitution of an amount of cash to be added to the Cash Component to replace any Deposit Security which may not be available in sufficient quantity for delivery or which may not be eligible for trading by such Authorized Participant or the investor for which it is acting or other relevant reason. The date on which an order to create Creation Units (or an order to redeem Creation Units, as discussed below) is placed is referred to as the "Transmittal Date." Orders must be transmitted by an Authorized Participant by telephone or other transmission method acceptable to the Distributor pursuant to procedures set forth in the Participant Agreement, as described below in the sections entitled "Placement of Creation Orders Using the Clearing Process" and "Placement of Creation Orders Outside the Clearing Process."

Effective July 14, 2025, the first and second paragraph in the Placement of Creation Orders Outside the Clearing Process section is deleted and replaced with the following information:

All Fund Deposits and/or Cash Component, as applicable, made outside the Clearing Process must be delivered through a DTC Participant that has executed a Participant Agreement. A DTC Participant who wishes to place an order creating Creation Units to be effected outside the Clearing Process does not need to be a Participating Party, but such orders must state that the DTC Participant is not using the Clearing Process and that the creation of Creation Units will instead be effected through a transfer of cash and securities directly through DTC. The Fund Deposit transfer must be ordered by the DTC Participant on the Transmittal Date in a timely fashion so as to ensure the delivery of the requisite number of Deposit Securities through DTC to the account of the Fund by no later than 10:30 a.m. New York time on the next Business Day following the Transmittal Date ("DTC Cut-Off-Time").

All questions as to the amount of an All Cash Amount, the number of Deposit Securities to be delivered, or the amount of a Cash Component, and the validity, form and eligibility (including time of receipt) for the deposit of any tendered securities, will be determined by the Trust, whose determination shall be final and binding. The amount of cash equal to the Cash Component (including All Cash Amounts) must be transferred directly to the Custodian through the Federal Reserve Bank wire transfer system in a timely manner so as to be received by the Custodian no later than 10:30 a.m. New York time on the next Business Day following the Transmittal Date. An order to create Creation Units outside the Clearing Process is deemed received by the Distributor on the Transmittal Date if (1) such order is received by the Transfer Agent not later than the Closing Time on such Transmittal Date and (2) all other procedures set forth in the Participant Agreement are properly followed. However, if the Custodian does not receive both the requisite Deposit Securities and the Cash Component or the All Cash Amount by 10:30 a.m. on the next Business Day following the Transmittal Date, such order will be canceled. Upon written notice to the Distributor, such canceled order may be resubmitted the following Business Day using the Fund Deposits and/or Cash Components as newly constituted to reflect the then-current Deposit Securities and Cash Component, or the All Cash Amount, as applicable. The delivery of Creation Units so created will occur no later than the third Business Day following the day on which the purchase order is deemed received by the Distributor.

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For more information regarding this supplement please call 1-844-802-4004.

This Supplement and the existing SAI provide relevant information for all shareholders and should be retained for future reference. The SAI has been filed with the U.S. Securities and Exchange Commission, is incorporated by reference, and can be obtained without charge by calling the Fund toll-free at 844-802-4004.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.