ATHA Energy Finds High-Grade Uranium Mineralization

• ATHA Energy's maiden drill hole at the KU Discovery Target successfully intersected shallow high-grade uranium mineralization with maximum radioactivity reaching 18,490 CPS and total composite mineralization of 7.1 meters.
• The company extended mineralization at the established Lac 50 Deposit by approximately 100 meters down-dip, demonstrating the deposit remains open and unconstrained both along strike and at depth.
• Initial drilling results validate ATHA's exploration thesis that the 31-kilometer RIB-Nine Iron corridor within the Angikuni Basin represents a direct analog to the prolific Athabasca Basin for uranium discoveries.
• The 2025 Angilak Exploration Program encompasses approximately 10,000 meters of diamond drilling, targeting both deposit expansion and regional exploration across the company's 100%-owned Nunavut property.
• ATHA Energy maintains a strategically diversified uranium portfolio including three post-discovery projects and over 7 million acres of prospective exploration land in two of the world's premier uranium basins.

ATHA Energy Corp (TSXV:SASK) operates as a Canadian mineral exploration company focused on uranium asset acquisition, exploration, and development within the clean energy transition framework. The company maintains a strategically balanced portfolio featuring three 100%-owned post-discovery uranium projects: the Angilak Project in Nunavut, CMB Discoveries in Labrador, and the newly discovered basement-hosted GMZ high-grade uranium discovery in the Athabasca Basin.

The company's extensive land position encompasses over 7 million acres across two of the world's most prominent uranium discovery basins, positioning ATHA among the largest land holders in these critical regions. Additionally, ATHA holds a 10% carried interest in key Athabasca Basin exploration projects operated by established uranium developers NexGen Energy Ltd. and IsoEnergy Ltd.

For investors evaluating ATHA Energy, the company's recent drilling results at Angilak demonstrate both technical execution capabilities and the geological potential of its flagship asset, occurring within a strengthening uranium market environment driven by nuclear energy renaissance fundamentals.

KU Discovery Target Breakthrough

Maiden Drill Hole Intersects High-Grade Mineralization

The KU Discovery Target represents ATHA's first exploration venture into the Angikuni Basin, located approximately 3 kilometers from the northern margin where historical trench sampling previously returned grades up to 30.7% U₃O₈. The maiden drill hole, designated KU-DD-001, successfully targeted stacked gravity and structural anomalies, delivering significant results that validate the company's regional exploration model.

The hole intersected total composite mineralization of 7.1 meters, including a continuous shallow zone between 84.95 and 87.45 meters containing 0.7 meters of high-grade mineralization with maximum radioactivity reaching 18,490 counts per second (CPS). This discovery confirms the presence of multiple mineralized zones throughout the 599-meter drill hole depth.

In the news release, CEO Troy Boisjoli commented on the significance of these results:

"The results from our first two diamond drill holes completed as part of the 2025 Angilak Exploration Program highlight two things. First, the robust metal endowment at the Angilak Uranium Project, and second, the successful systematic exploration approach of our world class technical team."

Geological Validation and Structural Controls

The geological interpretation of KU-DD-001 reveals favorable structural conditions for unconformity-related uranium mineralization. VP Exploration Cliff Revering provided technical context:

"Our first hole in the KU target area not only intersected a significant mineralized structural corridor, but also a large graphitic fault breccia zone displaying substantial vertical displacement of the basin unconformity -- geological conditions which are extremely favorable for deposition of unconformity-related uranium mineralization."

ATHA's May 2025 ground gravity and electromagnetic survey identified a substantial geophysical anomaly measuring 2 kilometers long by 500 meters wide at the KU target. Concurrent geological structural analysis by SRK Consulting highlighted numerous interpreted northwest-southeast trending faults intersected by east-west cross-cutting fault systems. The gravity survey confirmed these identified anomalies align with modeled fault structures and historical high-grade surface mineralization.

Lac 50 Deposit Extension Success

Down-Dip Mineralization Expansion

At the established Lac 50 Deposit, drill hole J4R-DD-091 targeted the J4/Ray zones along the Lac 50 Trend, achieving successful mineralization extension approximately 100 meters down-dip from previously known limits. This result demonstrates the deposit's continued expansion potential and reinforces ATHA's resource growth strategy.

The hole intersected 3.8 meters of composite mineralization, including 0.4 meters exceeding 10,000 CPS with maximum readings reaching 14,826 CPS. These results indicate robust mineralization continuity within the deposit's structural framework and support continued exploration investment.

Resource Expansion Implications

The successful down-dip extension at Lac 50 carries significant implications for resource expansion potential. The results demonstrate the deposit remains open and unconstrained both along strike and at depth, providing multiple vectors for future drilling campaigns and potential resource additions.

Revering commented on the broader exploration implications:

"Our thesis of the Angikuni Basin being an emerging uranium district and highly prospective for discovery of additional uranium deposits continues to unfold."

This perspective suggests ATHA views the current results as validation of a larger district-scale opportunity rather than isolated discoveries.

Strategic Exploration Framework

Basin Analog Thesis Validation

ATHA's exploration strategy centers on the thesis that the Angikuni Basin represents a direct analog to the world-renowned Athabasca Basin, which hosts numerous high-grade uranium deposits including some of the world's richest uranium mines. The successful KU Discovery Target results provide initial validation of this geological model.

Boisjoli reinforced this strategic positioning:

"The discovery of a new zone of mineralization on a maiden drill hole in a new area and the continued expansion at the Lac 50 Deposit is truly remarkable. Both confirm the Company's exploration thesis, substantially derisking the numerous prospective regional targets, providing a roadmap for executing on successful discoveries."

Regional Target Portfolio

The 31-kilometer RIB-Nine Iron corridor represents ATHA's primary regional exploration focus, with the KU Discovery Target serving as the initial proof-of-concept for mineralization potential under Angikuni Basin cover. The company's systematic approach combines geophysical surveys, structural analysis, and targeted drilling to advance priority targets across this extensive corridor.

The 2025 Angilak Exploration Program maintains dual objectives: expanding the mineralized envelope at the established Lac 50 Deposit while systematically testing regional targets along the RIB-Nine Iron Corridor. This balanced approach provides both near-term resource growth potential and longer-term discovery opportunities.

Conclusion for Investors

Nuclear Renaissance Fundamentals

ATHA's exploration success occurs within a strengthening uranium market environment driven by global nuclear energy expansion initiatives. Boisjoli positioned the company within this broader context:

"All this at a time when the macro thesis for uranium as the fuel for the New Nuclear Renaissance is top of mind for the world. ATHA Energy and our Angilak Project is well positioned to be a critical player in this cycle."

The uranium market has experienced significant strengthening over recent years as governments worldwide announce nuclear energy expansion plans to meet carbon reduction commitments while maintaining energy security. This fundamental shift creates a favorable environment for uranium exploration companies with quality assets and technical capabilities.

Investment Outlook

ATHA Energy's recent drilling results at Angilak provide investors with several key considerations. The successful maiden drill hole at KU Discovery Target demonstrates the company's ability to generate new discoveries through systematic exploration, while the Lac 50 extension results indicate established deposits retain expansion potential.

The company's extensive land position across premier uranium basins provides substantial exploration upside potential, while the diversified project portfolio offers multiple development pathways. The strengthening uranium market fundamentals create a favorable environment for advancing quality uranium assets toward development.

For investors evaluating ATHA Energy, the combination of technical execution demonstrated through recent drilling success, substantial land holdings in premier uranium districts, and favorable market timing presents a compelling exploration and development opportunity within the uranium sector's current cycle.