Mr. Thomas Lamb reports

MYRIAD URANIUM COMPLETES ACQUISITION OF RUSH RARE METALS

Myriad Uranium Corp. has completed the acquisition of 100 per cent of the issued and outstanding common shares of Rush Rare Metals Corp. pursuant to a statutory plan of arrangement, as previously announced by Myriad in news releases dated Feb. 13, 2026, and July 13, 2026.

Myriad's chief executive officer, Thomas Lamb, commented: "This merger is a significant value catalyst for Myriad. Full ownership of Copper Mountain gives us a clean, simplified structure and complete control over a uranium project we believe could become America's largest. I want to recognize Pete Smith, whose original vision created both Rush and Myriad, and I'm pleased he'll remain closely involved as an advisor to the company going forward."

Under the arrangement, Myriad issued an aggregate of 24,983,671 Myriad common shares to Rush shareholders, representing approximately one Rush share to 0.5405 Myriad share (the exchange ratio). In addition, all outstanding Rush stock options were replaced with an aggregate of 2,110,120 Myriad stock options, with appropriate adjustments made to reflect the exchange ratio.

The arrangement was approved by the Rush shareholders at an annual general and special meeting held on Aug. 17, 2026. On Aug. 19, 2026, the Supreme Court of British Columbia issued the final order to approve the arrangement. For additional details respecting the arrangement, see Rush's management information circular dated June 23, 2026, a copy of which can be found under Rush's profile on SEDAR+. Following completion of the arrangement, Rush has become a wholly owned subsidiary of Myriad and the Rush shares have been delisted from the Canadian Securities Exchange.

Spinout of Boxi property

As part of the arrangement, Rush shareholders received an aggregate of 11,555,816 common shares (Spinco shares) of a subsidiary of Rush, 1577075 B.C. Ltd. (Spinco), representing one Rush Spinco share for each four Rush shares outstanding. In exchange for the Spinco shares, Rush transferred all of its right, title, and interest in and to its Boxi property in Quebec and has financed $100,000 to support the capitalization of Rush Spinco.

Letter of transmittal

Registered Rush shareholders should send their completed and executed letters of transmittal and their Rush share certificates to the depository, TSX Trust Company, as soon as possible in order to receive their Myriad shares to which they are entitled under the arrangement. Non-registered Rush shareholders who hold shares through a broker or another intermediary should follow the instructions provided to them by their broker or such other intermediary. A copy of the letter of transmittal is available on SEDAR+ under Rush's profile.

Certain directors and officers of Myriad hold securities of Rush which will be exchanged for Myriad securities and Spinco shares under the arrangement, which exchange is considered to be a related party transaction as defined under Multilateral Instrument 61-101. This related party transaction is exempt from the formal valuation and minority shareholder approval requirements of MI 61-101 as the fair market value of the transaction does not exceed 25 per cent of Myriad's market capitalization of the company, as determined in accordance with MI 61-101. In considering and unanimously approving the transaction, there were no materially contrary views, abstentions (except for any abstentions required by corporate law) or material disagreements by any Myriad director.

About Myriad Uranium Corp.

Myriad Uranium holds a 100-per-cent interest in the Copper Mountain uranium project in Wyoming, U.S. Copper Mountain hosts multiple historic uranium deposits and past-producing mines, including the Arrowhead mine (approximately 500,000 pounds U3O8 (triuranium octoxide) produced). Union Pacific conducted extensive exploration and development in the district during the late 1970s, including approximately 2,000 boreholes and advanced mine planning, before the uranium market downturn in 1980. Union Pacific is estimated to have invested approximately $125-million (2026 dollars) in the project, generating significant historical resource estimates.

A news release detailing a comprehensive assessment of Copper Mountain's uranium endowment by Bendix Engineering for the United States Department of Energy published in 1982 can be viewed on-line.

Myriad holds a 10-per-cent free carried interest in the Red basin uranium project, recently sold to 8VC- and Overmatch-backed Subatomic Industries. Red Basin carries significant historical resource estimates from extensive drilling by Occidental Oil in the late 1970s, and also hosts vanadium, which has been designated a strategic and critical mineral by the U.S. government.

Myriad's 100-per-cent-owned Breccia Pipe project in Arizona comprises at least 23 breccia pipes that are prospective for uranium and REEs. One of the pipes, the Wate Pipe, was previously owned and explored by Energy Fuels and is the subject of a historical resource estimate.

Note: A qualified person has not done sufficient work to classify the Copper Mountain, Red basin and Breccia Pipe project historical estimates as current mineral resources or reserves, and Myriad is not treating historical estimates as current resources or reserves. Myriad intends to conduct further work to determine whether the historical estimates can be verified and, if appropriate, supported by current mineral resource estimates.

We seek Safe Harbor.