Mr. Leigh Curyer reports

NEXGEN ENERGY TO HOST Q3 CONFERENCE CALL ON ROOK I PROJECT DEVELOPMENTS

NexGen Energy Ltd. will be hosting its third quarter conference call on Wednesday, Nov. 22, 2023, at 10 a.m. Eastern Time.

During the call, NexGen's president and chief executive officer, Leigh Curyer, chief commercial officer, Travis McPherson, and chief financial officer, Benjamin Salter, will provide an update on the company's 100-per-cent-owned Rook I project. The conference call will highlight the latest milestones achieved, notably the recent provincial environmental assessment approval, the status of federal permitting and licensing, progress of project confirmation program, recent financing, as well as current uranium market dynamics. The call will be followed by an interactive Q&A (question-and-answer) session.

Call details:

Date:  Wednesday, Nov. 22, 2023

Time:  10 a.m. Eastern Time

North America toll-free:   1-888-664-6392

A replay will be available on the NexGen website under events and presentations. Further information is available at the company website.

About NexGen Energy Ltd.

NexGen Energy is a Canadian company focused on delivering clean energy fuel for the future. The company's flagship Rook I project is being optimally developed into the largest low-cost producing uranium mine globally, incorporating the most elite standards in environmental and social governance. The Rook I project is supported by a National Instrument 43-101-compliant feasibility study, which outlines the elite environmental performance and industry-leading economics. NexGen is led by a team of experienced uranium and mining industry professionals with expertise across the entire mining life cycle, including exploration, financing, project engineering and construction, operations, and closure. NexGen is leveraging its proven experience to deliver a project that leads the entire mining industry socially, technically and environmentally. The project and prospective portfolio in Northern Saskatchewan will provide generational long-term economic, environmental and social benefits for Saskatchewan, Canada and the world.

NexGen is listed on the Toronto Stock Exchange and the New York Stock Exchange under the ticker symbol NXE, and on the Australian Securities Exchange under the ticker symbol NXG, providing access to global investors to participate in NexGen's mission of solving three major global challenges in decarbonization, energy security and access to power. The company is headquartered in Vancouver, B.C., with its primary operations office in Saskatoon, Sask.

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