Mr. Peter Smith reports

RUSH ANNOUNCES FILING OF TECHNICAL REPORT FOR THE COPPER MOUNTAIN URANIUM PROJECT IN WYOMING

The MSA Group Pty. Ltd. has completed a technical report, having an effective date of March 31, 2026, and a report date of April 17, 2026, for Rush Rare Metals Corp.'s Copper Mountain uranium project in Fremont county, Wyoming. The technical report was prepared in accordance with National Instrument 43-101, Standards of Disclosure for Mineral Projects, and is available under the company's SEDAR+ profile.

The Copper Mountain uranium project comprises 966 unpatented federal mining lode claims and a number of state and private mineral leases, covering a total area of approximately 7,426 hectares (18,351 acres). The claims are not all contiguous but collectively define a large and highly prospective uranium district.

Peter Smith, Rush's chief executive officer, said: "Congratulations to MSA for an outstanding achievement. Since our original Copper Mountain 43-101 report was completed in 2023, there have been an enormous number of highly significant advancements which all needed to be accounted for, not to mention that the size of the claim area itself has grown many fold. Much credit belongs to the team at Myriad Uranium Corp., who have done a remarkable job advancing the project. Revelations through analysis of extensive found historical data, new drilling, assays showing that actual grades often exceed probe values and recent highly positive geophysical results, all point to truly massive potential. Given their very impressive record advancing Copper Mountain thus far, we look forward to Myriad's next steps with great excitement."

Qualified person

The scientific or technical information in this news release respecting the Copper Mountain uranium project is derived from the technical report and has been approved by George van der Walt, PrSciNat, FGSSA, the author of the technical report.

About Rush Rare Metals Corp.

Rush Rare Metals is a mineral exploration company focused on its Boxi property, located in the province of Quebec, Canada. Rush also owns the Copper Mountain project, located in Wyoming, USA, which it has optioned to Myriad Uranium. Rush currently has a 100-per-cent interest in the Boxi property and a 25-per-cent interest in the Copper Mountain project.

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