Stallion Uranium Intersects Elevated Radioactivity and Alteration at Coyote; Continues Expanded Drill Program, Mobilizes Geophysical Survey

About this update from Stallion Uranium Corp.

VANCOUVER, British Columbia, June 30, 2026 (GLOBE NEWSWIRE) -- Stallion Uranium Corp. (the "Company" or "Stallion") (TSX-V: STUD; OTCQB: STLNF; FSE: B76) is pleased to provide an update on drilling activities at its Coyote target, part of the Moonlite project in the Southwest Athabasca Basin, Saskatchewan, Canada in partnership with Atha Energy Corp. ("Atha Energy") (TSX-V: SASK). The Company also announces the mobilization of an expanded high-resolution ground Time Domain Electromagnetic (TDEM) along Coyote target corridor and over the current drilling target. Drilling Update: Stallion has continued to make strong progress at the Moonlite Project since its last drilling update on April 28, 2026. At that time, approximately 1,900 metres of the planned 4,000-metre drill program had been completed. Positive results from the initial drill holes prompted the Company to expand the Phase 1 program at the Coyote target to 5,500 metres. To date, approximately 3,527 metres have been completed, with drilling continuing to advance as planned. The early results are promising: elevated radioactivity (>300 cps) was intersected in all of the first three completed holes on the main Coyote target. Every hole has also revealed substantial hydrothermal alteration and strong structural features within the sandstone and underlying basement rocks. Darren Slugoski, Vice President Exploration, said, "Encountering consistent alteration and structural complexity across every drill hole is a strong positive signal in the Athabasca Basin. We're seeing the classic signatures of uranium systems; sandstone bleaching, clay alteration, brecciation, and faulting, which frequently act as conduits and depositional sites for uranium fluids. These real-time observations are sharpening our targeting as the program advances." Figure 1: Plan Map; Current 2026 Drilling Program The discovery of a graphitic fault zone alongside pronounced structural complexity and alteration provides robust confirmation of the Company's integrated geophysical model. These findings highlight a structurally active and hydrothermally altered corridor at Coyote, consistent with a fertile uranium system. These intersections, particularly the graphitic fault zone within a broader zone of structural complexity and alteration validate the Company's geophysical model and underscore the presence of a well-developed hydrot...

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