• Vertical extent of high-grade subdomain increased +33% to 550m with a strike length of 210m
• High-grade extension in RK-26-280c1 with cumulative 4.2m of >10,000 cps including 0.6m of >61,000 cps
• Continuity of intense mineralization in RK-26-271c1 with cumulative 12.6m of >10,000 cps including 2.3m of >61,000 cps

NexGen Energy Ltd. announces results from the 2026 winter drill program at Patterson Corridor East (PCE) that highlight significant vertical growth and strong internal continuity of high-grade mineralization. The high-grade subdomain within the mineralized zone of PCE has now grown to 550 m in vertical extent, a 33% increase, with a strike length of 210 m. This expansion was primarily driven by hole RK-26-280c1 which returned cumulative 4.2m of >10,000 cps including 0.6m of >61,000 cps at 834m below surface. Holes RK-26-271c1, RK-26-276, and RK-26-285 also returned strong mineralized intercepts between 600 to 700m below surface, where the system remains open for expansion. Results from RK-26-271c1 include cumulative 12.6m of >10,000 cps including 2.3m of >61,000 cps 80m down plunge of a previously reported high-grade intersection, indicating continuity of intense mineralization. Further, the intersections from RK-26-276 and RK-26-285 add progressive high-grade continuity to the base of this growing subdomain. Drilling 600m to the southeast of PCE along a separate parallel trend has also identified prospective structure and alteration features, suggesting potential repetition of mineralization within the overall PCE system. A 29,200m summer drilling program is scheduled to commence in late May 2026 to further evaluate the extent of the high-grade mineralization.

NexGen is positioned to meet the strong demand for Canadian uranium for many decades into the future, whilst setting a new industry standard in the safe, efficient and reliable delivery of offtake to utility customers around the world.