Atha Energy Completes Mobilization & Commences Diamond Drilling Operations as Part of the 2026 Angilak Exploration Program – Fully Funded and Largest to Date at the Project

HIGHLIGHTS The 2026 Angilak Exploration Program, is fully funded with the February closing of CAD $63 Million financing, making ATHA one of the best capitalized uranium exploration Companies globally; ATHA completed mobilization to Angilak in late April - including the arrival of a third diamond drill rig - and commenced diamond drilling operations on May 1st, 2026; The 2026 Angilak Exploration Program is focused on expansion and discovery of uranium mineralization across the three mineralized corridors (Figure 2), building upon the highly successful 2024 and 2025 campaigns; Over the two previous programs, ATHA has had unparalleled success, intersecting uranium mineralization in 100% of targets tested. During the 2025 campaign - focused on testing regional targets outside of the Lac 50 Deposit Exploration Target3 area, within the Angikuni Basin - the Company made five new regional discoveries, including the Mineralized RIB Corridor with four new showings; 2026 Angilak Exploration Program will be the largest to date at the Angilak Uranium Project, with two primary components: 1.