• NexGen highlighted the Rook I uranium project in Saskatchewan as a potential ~20% contributor to global supply from a single mine.
• Construction clearance cited from Canada’s nuclear regulator on March 5, 2026; major construction scheduled to start in summer 2026.
• Mine plan referenced from the 2021 feasibility study, targeting about 30 million lbs of U3O8 per year in years 1-5.
• Arrow deposit outlined with probable reserves of 239.6 million lbs at 2.37% U3O8; measured and indicated resources total 256.7 million lbs.
• Contracting update cited 10 million lbs of sales commitments with major utilities, structured with market-related pricing mechanisms.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. NexGen Energy Ltd. published the original content used to generate this news brief on June 04, 2026, and is solely responsible for the information contained therein.