Stallion Uranium Intersects Highest Radioactivity to Date at Coyote, Plans to Expand Drill Program to 6,750 Metres

VANCOUVER, British Columbia, Aug. 13, 2026 (GLOBE NEWSWIRE) — Stallion Uranium Corp. (the “Company” or “Stallion”) (TSX-V: STUD ; OTCQB: STLNF ; FSE: B76 ) is pleased to provide an update on its ongoing exploration activities across its Athabasca Basin uranium portfolio in northern Saskatchewan.

Stallion has now completed 4,626 metres of drilling at the Coyote target , including two additional drill holes, ML26-005 and ML26-006A , with the latest drilling intersecting increased radioactivity as the Company continues to advance its understanding of the Coyote system .

Encouraged by the progression of the 2026 drill program and the geological information generated to date, Stallion plans to expand its current 5,500-metre program to approximately 6,750 metres before the end of the exploration season , representing an additional 1,250 metres of planned drilling at Coyote.

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In parallel, Stallion has mobilized a ground gravity survey over its highest-priority target at the Stone Island Project .

Together, the continued advancement of Coyote and progression of Stone Island demonstrate Stallion’s systematic exploration strategy of integrating geology, geophysics and advanced data analysis to progressively identify, validate and drill-test the highest-priority uranium targets across its Athabasca Basin portfolio.

Drilling at Coyote has now reached 4,626 metres , representing approximately 84% of the Company’s previously announced 5,500-metre program .

The latest drilling includes holes ML26-005 and ML26-006A, which intersected increased radioactivity, highlighted by a peak response of 1,416 cps in ML26-005 within a 2.3-metre interval averaging 595 cps . The drilling continues to provide important geological information as Stallion refines its understanding of the structural and alteration systems associated with the Coyote target.

The Company plans to complete the remaining metres of the current program and, based on the geological information generated to date, intends to expand drilling to a total of approximately 6,750 metres before the end of the 2026 exploration season .

The additional drilling will allow Stallion to continue testing and refining priority areas within the Coyote system while incorporating the growing geological and geophysical dataset developed throughout the 2026 program.

Stallion has mobilized crews to conduct a ground gravity survey over a high-priority target at the Company’s Stone Island Project .