ATHA Energy Confirms New High-Grade Discovery at Angilak Project - Rib North, Maiden Hole Returns Assays with 34.7 m of Total Composite Uranium Mineralization, Including 13.6 m Grading 0.53% U3O8, 1.1 m Grading 4.81% U3O8, and Grades Up to 8.16% U3O8

HIGHLIGHTS Assays confirm the Company's maiden drillhole, RIBN-DD-001, at the RIB North Discovery as the best exploration hole drilled to date at the Angilak Uranium Project; RIBN-DD-001 assays returned total composite uranium mineralization1 of 34.7 m encompassing seven zones from 287.0 m to 439.9 m (Figure 4) - surpassing what was reported in the release of preliminary results (September 23rd, 2025, News Release ); The widest continuous intersection in the hole - from 426.3 to 439.9 - returned 13.6 m of c ...