NexGen Energy Ltd.

1. REPORTING ENTITY

NexGen Energy Ltd. ("NexGen" or the "Company") is an exploration and development stage entity engaged in the acquisition, exploration and evaluation and development of uranium properties in Canada. The Company was incorporated pursuant to the provisions of the British Columbia Business Corporations Act on March 8, 2011. The Company's registered records office is located on the 25th Floor, 700 West Georgia Street, Vancouver, B.C., V7Y 1B3.

The Company is listed on the Toronto Stock Exchange (the "TSX") under the symbol "NXE" and is a reporting issuer in each of the provinces and territories of Canada. On July 2, 2021, the Company commenced trading on the Australian Stock Exchange (the "ASX") under the symbol "NXG". On March 4, 2022, the Company up-listed from the NYSE American exchange (the "NYSE American") and began trading on the New York Stock Exchange ("NYSE") under the symbol "NXE".

The Company holds an investment in IsoEnergy Ltd. ("IsoEnergy") which is engaged in the acquisition, exploration and development of uranium properties in Canada, the United States of America and Australia. The Company owns approximately 27.8% of IsoEnergy's outstanding common shares as of June 30, 2026 (December 31, 2025 - 30.0%) and accounts for its investment using the equity method of accounting. IsoEnergy's shares are traded on the TSX and the NYSE American.