With licensed wellfield and toll processing capacity of up to 2.0 million pounds of U3O8 equivalent, Ur-Energy's Shirley Basin mine is the Company's second uranium in-situ recovery ("ISR") operation in Wyoming. As previously announced, initial mining operations commenced at the mine in April 2026. Final authorization to advance to full operations was received from the State of Wyoming Department of Environmental Quality in late June 2026.

Shirley Basin is being run as a satellite mine of the Company's Lost Creek hub operation. Lost Creek, which is home to the largest operating ISR mine in the U.S., has a proven and tested facility that has processed and shipped more than 3.5 million pounds of U3O8 to the conversion facility for delivery to the Company's customers. This hub-and-spoke model is the basis of Ur-Energy's growth platform in Wyoming. It avoids duplicative infrastructure, improves capital efficiency, and can be scaled at an accelerated pace.

Now that shipments from Shirley Basin to Lost Creek have commenced, the Company will execute on its strategy for ramp-up to full commercial levels, while continuing to advance its other organic growth opportunities in the district.

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