IsoEnergy Ltd. Announces Filing of Prospectus Supplement for Upsized Prospectus Offering of Common Shares

The shelf prospectus supplement, the corresponding base shelf prospectus and any amendment to the documents are accessible through SEDAR+

THIS NEWS RELEASE IS INTENDED FOR DISTRIBUTION IN CANADA ONLY AND IS NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR DISSEMINATION IN THE UNITED STATES

All monetary amounts are expressed in Canadian Dollars, unless otherwise indicated.

Toronto, February 18, 2025 – IsoEnergy Ltd. (TSX:ISO, OTCQX:ISENF) (the “Company” or “IsoEnergy”) is pleased to announce that, further to its news releases dated February 13, 2025, it has filed a prospectus supplement (the “Prospectus Supplement”) to its short form base shelf prospectus filed on September 5, 2024 (the “Shelf Prospectus”) with the securities regulatory authorities in each of the provinces and territories of Canada other than Quebec to qualify the distribution of 4,642,000 common shares that will qualify as “flow-through shares” (within the meaning of subsection 66(15) of the Income Tax Act (Canada)) and will be sold on a flow-through basis (the “PFT Shares”) at a price of C$3.75 per PFT Share for gross proceeds of approximately C$17,400,000  (the “Offering”).

Access to the Prospectus Supplement, the corresponding Shelf Prospectus and any amendment thereto in connection with the Offering is provided in accordance with securities legislation relating to procedures for providing access to a shelf prospectus supplement, a base shelf prospectus and any amendment thereto. The Shelf Prospectus and the Prospectus Supplement are accessible on SEDAR+ (www.sedarplus.ca) under IsoEnergy’s issuer profile.

An electronic or paper copy of the Prospectus Supplement, the corresponding Shelf Prospectus and any amendment thereto may be obtained, without charge, from ProspectusCanada@stifel.com by providing the contact with an email address or address, as applicable. The Shelf Prospectus and Prospectus Supplement contain important, detailed information about the Company, the Offering and the PFT Shares. Prospective investors should read the Shelf Prospectus and Prospectus Supplement before making an investment decision.

Concurrently with the Offering, the Company intends to complete a non-brokered private placement (the “Concurrent Private Placement”) of 2,500,000 common shares (“Shares”) (which for greater certainty will not quality as “flow-through shares”) at a price of C$2.50 per Share with NexGen Energy Ltd. (“NexGen”) for aggregate gross proceeds of C$6,250,000. The Concurrent Private Placement is being completed to enable NexGen to maintain its pro rata ownership interest in the Company at approximately 31.8% after giving effect to the Offering. The Shares to be issued pursuant to the Concurrent Private Placement will be subject to a restricted hold period of four months and one day following the closing of the Concurrent Private Placement. No commission or other fee is payable to the underwriters of the Offering in connection with the sale of Shares pursuant to the Concurrent Private Placement. The net proceeds from the Concurrent Private Placement are expected to be used for working capital purposes.

The Offering and the Concurrent Private Placement are scheduled to close on or about February 28, 2025 and are subject to certain conditions including, but not limited to, the receipt of all necessary approvals including conditional approval from the Toronto Stock Exchange (the “Exchange”) and the securities regulatory authorities.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state in which such offer, solicitation or sale would be unlawful. The securities being offered have not been, nor will they be, registered under the U.S. Securities Act and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the U.S. Securities Act, and application state securities laws.

About IsoEnergy Ltd.

IsoEnergy (TSX: ISO) (OTCQX: ISENF) is a leading, globally diversified uranium company with substantial current and historical mineral resources in top uranium mining jurisdictions of Canada, the U.S. and Australia at varying stages of development, providing near-, medium- and long-term leverage to rising uranium prices. IsoEnergy is currently advancing its Larocque East project in Canada’s Athabasca basin, which is home to the Hurricane deposit, boasting the world’s highest-grade indicated uranium mineral resource.

IsoEnergy also holds a portfolio of permitted past-producing, conventional uranium and vanadium mines in Utah with a toll milling arrangement in place with Energy Fuels. These mines are currently on standby, ready for rapid restart as market conditions permit, positioning IsoEnergy as a near-term uranium producer.

For further information, please contact:

IsoEnergy Ltd.
Philip Williams, CEO and Director
(833) 572-2333
info@isoenergy.ca
www.isoenergy.ca

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