Atha talks up drill hole at Angilak uranium project

Mr. Troy Boisjoli reports ATHA ENERGY MAKES MAJOR NEW DISCOVERY ALONG THE RIB CORRIDOR; DRILLS BEST EXPLORATION HOLE TO DATE AT THE ANGILAK URANIUM PROJECT INTERSECTING 26.3 M OF COMPOSITE URANIUM MINERALIZATION Atha Energy Corp. has released additional drilling results from the 2025 Angilak exploration program at its 100-per-cent-owned Angilak uranium project in Nunavut, Canada. The results are from an additional three diamond drill holes: RIBN-DD-001, RIBS-DD-001 and RIBW-DD-003, all of which targeted east-west and north-south crosscutting structures along the Mineralized Rib Corridor (MRC). Highlights Major new discovery within the Mineralized Rib Corridor (MRC), the Rib North discovery, located approximately 1.4 kilometres along strike from the nearest drill hole at the Rib East discovery. The first hole at Rib North, RIBN-DD-001, represents the most robust mineralized intersection to date within the MRC, and one of the most significant intersections within the Angilak uranium project. Drill hole RIBN-DD-001 intersected 26.3 metres of total composite uranium mineralization including 1.9 m of high grade, over 10 zones from 345.55 m to 460.05 m. The hole intersected 13.6 m of continuous mineralization (from 426.25 m to 439.85 m) including 1.7 m of high-grade mineralization with maximum radioactivity of 55,730 counts per second (CPS). Mineralization was initially intersected directly above the unconformity (located at 356.7 m), extending into graphitic basement rock. The widest intersections are basement hosted vein style uranium mineralization, associated with strong hematite alteration, graphitic structures and overprinting silicification -- similar in style and widths observed in Athabasca basement hosted deposits. Uranium mineralization along the eastern limb of the MRC has now been intersected over a potential 4.4-kilometre strike length, extending from Rib South to Rib North. Along the parallel western limb of the MRC, the company has intersected mineralization over an additional approximately 4.0 km with drill hole RIBW-DD-003, located approximately 1.5 km to the north of RIBW-DD-002 (see Sept. 18, 2025, news release). Troy Boisjoli, chief executive officer, commented: "The newest drill hole results from the Rib North discovery, situated along the Mineralized Rib Corridor (MRC), represent a distinct achievement, not only for the 2025 Angilak exploration program, but for the company as a whole. They demonstrate that the Angilak uranium project has the potential to host thick, high-grade, basement-hosted uranium mineralization on scale similar to what is found in the Athabasca basin. From my previous experience working in both exploration and production across the Athabasca basin, I am keenly aware of the geological characteristics of basement hosted style uranium deposits. Atha's first hole at the Rib North discovery, RIBN-DD-001, displays similar grades and thicknesses as other discovery holes from major basement deposits. When coupling the results from Rib North with the cumulative discoveries made across the 12 km long MRC, the evidence is stacking up that the MRC has the potential to host discoveries like those found along the Patterson Lake Corridor. Angilak has the makings of Canada's newest uranium jurisdiction, and this comes on the heels of the recent announcement by the U.S. government for the need to increase their strategic reserves beyond the current 14-month stockpile -- the U.S.'s current annual demand is approximately 50 million pounds U3O8. The company couldn't be more excited about the trajectory of success at our Angilak uranium project and the entire uranium sector as whole." Cliff Revering, vice-president, exploration, added: "We continue to see compelling evidence of the immense potential within the Rib regional target area. Our team has now discovered uranium mineralization across a 12 km graphitic structural corridor, and the results from the first Rib North drill hole, located over 1.4 km away from the nearest drilling, demonstrate impressive scale and continuity. These results highlight how our technical team is successfully translating a robust targeting strategy into meaningful new discoveries and set us up for a very exciting year ahead. Our thesis that the Angikuni basin is an emerging new uranium district with substantial scale potential is steadily being validated." The MRC is now defined by over 12 km of stacked conductors based on the EM inversion model. The eastern limb of the MRC now has mineralization traced over a potential 4.4 km strike length, extending from Rib South, across Rib East to Rib North. Mineralization along the parallel, western limb of the MRC, extends from the Historic Rib discovery through to the Rib West discovery, tracing mineralization over a potential 4.0 km strike length. Outside of the currently defined discoveries, the MRC remains open and prospective for additional discoveries across the entire 12 km MRC. MRC Eastern Limb Two additional drill holes were completed, RIBN-DD-001 and RIBS-DD-001, representing two new discoveries at Rib North and Rib South, both situated along the eastern limb of the MRC. At Rib North, situated approximately 1.5 km northeast from the previously announced Rib East discovery, maiden drill hole RIBN-DD-001, represents the best exploration drill hole to date at the Angilak uranium project. RIBN-DD-001 intersected 26.3 m of total composite uranium mineralization, including 1.9 m of high grade, over 10 zones from 345.55 m to 460.05 m. The hole intersected 13.6 m of continuous mineralization (from 426.25 m to 439.85 m) including 1.7 m of high-grade mineralization with maximum radioactivity of 55,730 CPS. Mineralization was first intersected directly above the unconformity located at 356.7 m, extending into graphitic basement rock. The widest intersections are basement hosted, vein style uranium mineralization, associated with strong hematite alteration, graphitic structures and overprinting silicification -- similar in style and widths observed in Athabasca basement-hosted deposits. One drill hole was completed at Rib South, located approximately 2.25 km to the south from the previously announced Rib East discovery. The maiden drill hole, RIBS-DD-001, intersected low-grade mineralization over three zones with total composite mineralization of 2.1 m. MRC Western Limb Along the western limb of the MRC, one additional drill hole, RIBW-DD-003, located approximately 1.5 km from RIBW-DD-002 (see Sept. 18, 2025, news release) has been completed. Drill hole RIBW-DD-003, intersected continuous uranium mineralization over 1.8 m including 0.2 m of high-grade mineralization. The mineralized interval intersected between 234.15 m and 235.98 m had an average radioactivity of 2,635 CPS and a peak of 16,030 CPS. Down hole gamma probe Core samples are submitted to the Saskatchewan Research Council (SRC) geoanalytical laboratories in Saskatoon. The SRC facility is ISO/IEC 17025:2005 accredited by the Standards Council of Canada (scope of accreditation No. 537). The samples are analyzed for a multielement suite using partial and total digestion inductively coupled plasma methods, for boron by Na2O2 fusion, and for uranium by fluorimetry. Disclaimer for historical drilling and outcrop samples Certain noted technical information provided herein has been derived exclusively and without independent verification from the following reports. Such information is historical in nature and is not considered by the company to be current. In each case, the reliability of the historical information is considered reasonable by the company. The historical information provides an indication of the exploration potential of the properties but may not be representative of expected results. Readers should read the entirety of such noted reports to fully understand the nature of the information referenced herein. Samples, including, without limitation, outcrop samples, by their nature, are selective in nature and significant variations may be seen from sample to sample. Accordingly, sample information may not be representative of the true underlying mineralization. References for historic diamond drilling results and surficial sampling Dufresne, M.B. and Schoeman, P. (2024). Technical report on the Angilak project, Kivalliq region, Nunavut. Technical report prepared on behalf of Atha Energy and Labrador Uranium Inc., Jan. 31, 2024. A copy of such report is available on the SEDAR+ profile of the company. Qualified person The scientific and technical information contained in this news release have been reviewed and approved by Cliff Revering, PEng, vice-president, exploration, of Atha, who is a qualified person as defined under National Instrument 43-101 -- Standards of Disclosure for Mineral Projects. About Atha Energy Corp. Atha is a Canadian mineral company engaged in the acquisition, exploration and development of uranium assets in the pursuit of a clean energy future. With a strategically balanced portfolio including three 100-per-cent-owned postdiscovery uranium projects (the Angilak project located in Nunavut, and CMB discoveries in Labrador, and the newly discovered basement hosted GMZ high-grade uranium discovery located in the Athabasca basin). In addition, the company holds the largest cumulative prospective exploration land package (greater than seven million acres) in two of the world's most prominent basins for uranium discoveries -- Atha is well positioned to drive value. Atha also holds a 10-per-cent carried interest in key Athabasca basin exploration projects operated by NexGen Energy Ltd. and IsoEnergy Ltd. We seek Safe Harbor.