Mr. Leigh Curyer reports

NEXGEN TO HOST Q2 2026 CONFERENCE CALL

NexGen Energy Ltd. will host its second quarter 2026 conference call on Thursday, Aug. 6, 2026, at 8 a.m. Eastern Time.

During the call, NexGen's founder and chief executive officer, Leigh Curyer, chief commercial officer, Travis McPherson, chief financial officer, Ryan Podrasky, and project director, Chris Copley, will provide an update on the advancement of its 100-per-cent-owned Rook I project. This will include an update on construction activities completed to date, anticipated milestones through year-end and major procurement awards. Management will also discuss uranium sales contracting and market conditions, together with continued exploration success at Patterson Corridor East, followed by a live question-and-answer session.

The company encourages participants to join by the live webcast, which will include images of the latest major construction progress at the Rook I site.

Access details

Date:  Thursday, Aug. 6, 2026

Time:  8 a.m. Eastern Time

A live webcast will be available.

Participants wishing to join by telephone may use the following dial-in numbers and advise the operator they are joining the "NexGen Energy Ltd. 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 by either of the links will be automatically connected to the NexGen conference call.

Prior to the call, the company will file its second quarter 2026 financial statements and management's discussion and analysis on Tuesday, Aug. 4, 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 and 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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