NexGen Energy Ltd. (TSX: NXE) (NYSE: NXE) is pleased to announce that it has closed its previously announced bought deal financing. Pursuant to the Offering, the Company issued 33,400,000 common shares of the Company at a price of $4.50 per Common Share for gross proceeds of approximately $150 million. NexGen has granted the Underwriters (as defined below) a 30-day option to purchase up to an additional 5,010,000 Common Shares.

The Offering was completed through a syndicate of underwriters led by BMO Nesbitt Burns Inc. and Canaccord Genuity Corp., and including Eight Capital, Raymond James Ltd., TD Securities Inc., Cormark Securities Inc., Haywood Securities Inc., Sprott Capital Partners LP, and PI Financial Corp.

The Company intends to use the net proceeds from the Offering for general corporate purposes, including the continued development of the Rook I Project and general working capital

The Company filed a preliminary short form prospectus on February 25, 2021 and an amended and restated preliminary short form prospectus on February 26, 2021. The Company filed a final short form prospectus on March 8, 2021. The Prospectuses were filed with the securities regulatory authorities in each of the provinces of Canada, except Quebec. The Prospectuses were also filed with the U.S. Securities and Exchange Commission as part of the Company’s Registration Statement on Form F-10 (File No. 333-253512) in accordance with the Multijurisdictional Disclosure System established between Canada and the United States.

Copies of the Prospectuses can be found on SEDAR at www.sedar.com and a copy of the registration statement can be found on EDGAR at www.sec.gov. Copies of such documents may also be obtained from any of the following sources: BMO Nesbitt Burns Inc., Attn: Equity Syndicate, telephone: 800-414-3627 or by email at bmoprospectus@bmo.com and Canaccord Genuity Corp., Attn: ECM, telephone: 416­687-5284 or by email at ecm@cgf.com. This news release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the Common Shares in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of that jurisdiction.

About NexGen

NexGen is a British Columbia corporation with a focus on the acquisition, exploration and development of Canadian uranium projects. NexGen has a highly experienced team of uranium industry professionals with a successful track record in the discovery of uranium deposits and in developing projects through discovery to production. NexGen owns a portfolio of prospective uranium exploration assets in the Athabasca Basin, Saskatchewan, Canada, including a 100% interest in Rook I, location of the Arrow Deposit discovered in February 2014 which is in development.