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Vancouver, British Columbia, October 3, 2025 — Standard Uranium Ltd. (“Standard Uranium” or the “Company”) (TSX-V: STND) (OTCQB: STTDF) (Frankfurt: FWB:9SU0) is pleased to announce a significant expansion to the planned diamond drill program at its flagship Davidson River project (“Davidson River” or the “Project”) in the southwest Athabasca Basin region, northern Saskatchewan (Figure 1). The drill program will now aim to complete between 8,000 to 10,000 meters beginning in May 2026. The Company is also pleased to announce that it has closed an additional tranche (“Tranche 3”) of its non-brokered private placement (the “Private Placement Offering”) for gross proceeds of $503,800.

Davidson River Highlights:

  • Expansion of Drill Program: Due to increased funding, the Company will shift the planned Davidson River drill program to begin in spring 2026. The timeline adjustment will decrease cost per metre through utilizing two diamond drills in favorable weather conditions and therefore enable a more efficient drill program with the completion of additional metres of drilling at high-priority targets.
  • Poised for Discovery: New and refined target areas across the Warrior, Bronco, and Thunderbird conductor corridors are significantly derisked with new high-resolution 3D imaging of basement structures and potential alteration zones, providing key targeting information for spring 2026 drilling.
  • Multiphysics Results: Standard Uranium in partnership with Fleet Space Technologies Canada Corp. (“Fleet Space”) recently executed the first Exosphere Multiphysics survey in the prolific southwest Athabasca Uranium District on the Davidson River project.
  • Drill Ready: The Company has secured all drill permits, has signed Exploration Agreements with our Clearwater River Dene Nation (“CRDN”) partners, has secured all crucial vendors and drilling is now planned for a four-to-six-week drill program in early spring 2026.

Jon Bey, CEO of Standard Uranium commented, “Our shareholders and advisors asked us to complete a larger drill program than we originally had planned for this fall based on the targets we are seeing from the work completed this summer. With the recent financial support of our capital raise, we will be fully funded to complete the 8,000 to 10,000 meters of drilling planned. We are extremely excited to get back to our flagship Davidson River project and get those drills turning once again.