Myriad Uranium and Rush Rare Metals Execute Definitive Merger Agreement Pursuant to Which Myriad Will Acquire Rush

Vancouver, British Columbia--(Newsfile Corp. - February 13, 2026) - Myriad Uranium Corp. (CSE: M) (OTCQB: MYRUF) (FSE: C3Q) ("Myriad" or the "Company") and Rush Rare Metals Corp. (CSE: RSH) ("Rush") are pleased to announce that they have entered into an acquisition agreement and an arrangement agreement dated as of February 13, 2026 (together, the "Definitive Agreement") respecting their previously announced merger transaction (the "Merger") under which Myriad will acquire 100% of the issued and outstanding common shares of Rush (the "Rush Shares") pursuant to a statutory plan of arrangement (the "Arrangement").

Under the Merger, Myriad will acquire all of the Rush Shares by issuing one Myriad common share (each, a "Myriad Share") for every 1.85 Rush Shares issued and outstanding, resulting in an exchange ratio of one (1) Rush Share to 0.5405 Myriad Shares (the "Exchange Ratio"). In addition, all of Rush's convertible securities will be replaced with Myriad convertible securities exercisable for Myriad Shares, with appropriate adjustments made to reflect the Exchange Ratio under the Arrangement.

Myriad CEO Thomas Lamb commented: "Unifying 100% ownership of the Copper Mountain Uranium Project is a clear value catalyst for Myriad which will also simplify decision making and execution, improve capital efficiency and remove the structural discount of split ownership while making the project and Myriad itself easier for investors to value.

Copper Mountain is viewed by a number of sector commentators as a call option on U.S. uranium because of its scale, location, and exceptional history. In the 1970s, Union Pacific and Southern California Edison invested roughly US$125 million in today's dollars, identified multiple deposits, and advanced plans for a large conventional uranium mine before development was halted by the Three Mile Island incident. This historical investment and results strongly support Copper Mountain's potential as a large-scale, strategic, domestic source of uranium.

Since taking the helm and with strong support from Rush, Myriad has rebuilt the project's historic data archive, delivered drilling that confirms and extends earlier work, and completed a district-wide radiometric and magnetic survey, with results to be reported shortly. With uranium markets and U.S. policy now supportive-particularly in top jurisdictions like Wyoming-Copper Mountain has re-emerged as one of the most significant uranium projects in the United States.