• NexGen outlined construction progress at its Rook I uranium project in Saskatchewan, positioning it as a major new source of uranium supply.
• Federal authorization to build was granted on March 5, 2026; construction began in June 2026.
• Rook I is designed for conventional underground hard-rock mining; output could reach 30 million lbs of U3O8 annually with expansion.
• The Arrow deposit hosts probable reserves of 239.6 million lbs at 2.37% U3O8; measured and indicated resources total 256.7 million lbs.
• Sales commitments total 11.7 million lbs, using market-related pricing mechanisms at delivery from commercial production.

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 August 08, 2026, and is solely responsible for the information contained therein.