Vancouver, British Columbia--(Newsfile Corp. - October 2, 2025) - NexGen Energy Ltd. (TSX: NXE) (NYSE: NXE) (ASX: NXG) ("NexGen" or the "Company") announced today that it is has entered into an amended and restated underwriting agreement with Aitken Mount Capital Partners Pty Ltd (the "Australian Underwriter") to upsize its previously announced offering and pursuant to which the Australian Underwriter has agreed to fully underwrite an offering of 45,801,527 common shares in the capital of the Company (the "Australian Common Shares"), to be settled in the form of Australian CHESS Depositary Interests, at a price of A$13.10 per share (the "Offering Price"), for gross proceeds of approximately AUD $600 million (the "Australian Offering").

Vancouver, British Columbia--(Newsfile Corp. - October 1, 2025) - NexGen Energy Ltd. (TSX: NXE) (NYSE: NXE) (ASX: NXG) ("NexGen" or the "Company") announced today that it is has launched an equity financing (the "Offering") comprising: an agreement with a syndicate of underwriters (the "North American Underwriters") led by Merrill Lynch Canada Inc. under which the North American Underwriters have agreed to buy on a bought deal basis 33,112,583 common shares in the capital of the Company (the "North American Common Shares") at a price of C$12.08 per North American Common Share (the "Offering Price") for gross proceeds of approximately C$400 million (the "North American Offering"); and an underwriting agreement with Aitken Mount Capital Partners Pty Ltd (the "Australian Underwriter") under which the Australian Underwriter has agreed to fully underwrite an offering of 30,534,351 common shares in the capital of the Company (the "Australian Common Shares"), to be settled in the form of Australian CHESS Depositary Interests, at the Offering Price1 for gross proceeds of approximately AUD $400 million2 (the "Australian Offering").

Energy Fuels and NexGen Energy stand out in the uranium sector, but UUUU's active production and rare earth push give it a near-term edge.