Mr. Leigh Curyer reports

NEXGEN ENERGY TO HOST YEAR END CONFERENCE CALL

NexGen Energy Ltd. will host its year-end and fourth-quarter conference call on Monday, March 11, 2024, at 8:30 a.m. Eastern Time.

During the call, Leigh Curyer, NexGen's president and chief executive officer, Travis McPherson, chief commercial officer, and Benjamin Salter, chief financial officer, will provide an update on the company's 100-per-cent-owned Rook I project, federal permitting and licensing, project development, financing, regional exploration, and current uranium market dynamics.

Call details are as follows

Date:  Monday, March 11, 2024

Time:  8:30 a.m. Eastern Time

RapidConnect:  access on-line

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

Prior to the call, the company will file its year-end and fourth-quarter financial statements and management discussion and analysis on March 7, before market open. These filings will be available for review on the NexGen website, under reports and filings, and on the company's SEDAR+ profile. In addition, a replay will be available on the NexGen website under events and presentations.

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 environmental and social governance standards. The Rook I project is supported by a National Instrument 43-101-compliant feasibility study, which outlines 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's mission is 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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