In February 2023, the Company issued 39,100,000 warrants to purchase 19,550,000 common shares at $1.50 per whole common share for a term of three years.

Because the warrants are priced in U.S. dollars and the functional currency of Ur-Energy Inc., the parent company entity, is Canadian dollars, a derivative financial liability was created. Using Level 2 inputs of the fair value hierarchy under US GAAP, the liability created is measured and recorded at fair value, and adjusted monthly, using the Black-

Scholes model as there is no active market for the warrants. Any gain or loss from the mark-to-market adjustment of the liability is reflected in net income for the period.

Activity with respect to the warrant liabilities is presented in the following table:

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The duration of the outstanding warrants as of March 31, 2025 is presented in the following table:

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The fair value of the warrant liabilities on March 31, 2025, was determined using the Black-Scholes model with the following assumptions:

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