NexGen Energy Ltd.

PCE Expansion:• Vertical extent of high-grade subdomain has increased by 23% from 335 m to 412 m with 210 m of strike length.• Additional expansion of the mineralized footprint to 700 m vertical extent (from 600 m) and to 620 m strike length (from 600 m).• Additional high-grade subdomain building at 850 m below surface, extending high-grade in this portion of the mineralization and opening it to further growth.2026 Drilling Program Commencement:• 42,000 meters ("m") of diamond drilling at PCE in 2026 to be largest program conducted at the discovery to date building...

RK-25-256 returns 5.5 m at 21.4% U3O8, including 2.5 m at 46.1% U3O8 and including 0.5 m at 74.8% U3O8,Rook I developing a multi-generational portfolio of uranium projects in the southwest Athabasca Basin, Saskatchewan, Canada.Vancouver, British Columbia--(Newsfile Corp. - December 1, 2025) - NexGen Energy Ltd. (TSX: NXE) (NYSE: NXE) (ASX: NXG) ("NexGen" or the "Company") is pleased to announce its highest-grade assay results to date at the Company's 100%-owned Patterson Corridor East ("PCE") with drill hole RK-25-256. Assays returned 5.5 meters ("m") at 21.4% U3O8 between 590.0 and...

Link to Commission Hearing that commenced at 9.00am EST November 19, 2025: hereCommission Hearing presentation video will be available on NexGen's homepage at http://www.nexgenenergy.ca#videoTwo-part public hearings represent the final step in the Federal regulatory process prior to a CNSC approval decisionFinal Commission hearings follow Saskatchewan's Environmental Assessment approval in November 2023Vancouver, British Columbia--(Newsfile Corp. - November 19, 2025) - NexGen Energy Ltd. (TSX: NXE) (NYSE: NXE) (ASX: NXG) ("NexGen" or the "Company") is pleased to be participating...