Mr. Leigh Curyer reports

NEXGEN TO HOST Q1 2026 CONFERENCE CALL

NexGen Energy Ltd. will host its 2026 first quarter conference call on Thursday, May 7, 2026, at 8 a.m. Eastern Time.

During the call, Leigh Curyer, NexGen's founder and chief executive officer, Travis McPherson, chief commercial officer, Benjamin Salter, chief financial officer, and Chris Copley, project director, will provide an update on the site activities at NexGen's 100-per-cent-owned Rook I project, including the company's 2025 site infrastructure program, construction preparation, pending major contract announcements, timelines and procurement readiness, financing, the continued drilling success at Patterson Corridor East (PCE) and strengthening uranium market dynamics, alongside NexGen's strategy to optimize value through maximizing leverage to future uranium prices.

Call-in details

Date:  Thursday, May 7, 2026

Time:  8 a.m. Eastern Time

Participants should advise the operator that they are joining the NexGen Energy conference call to gain admission to the event.

North America toll-free number:  1-833-752-3734

Australia local toll number:  61-7-3911-1378

Participants accessing the call on-line will be automatically connected to the NexGen Energy conference call.

Prior to the call, the company will file its 2026 first quarter financial statements and management discussion and analysis on Tuesday, May 5, 2026, after the North American markets close. 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 of the call will be available on the NexGen website under Events & Webcasts.

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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