Nexgen Energy (NXE) Corporate presentation summary

Strategic positioning

• Rook I is under construction, with potential production of up to 30M lb of uranium annually; the current mine plan and economics remain based on the 2021 Feasibility Study.

• Potential output is estimated to represent ~20% of global primary supply and over 50% of Western supply, based on 2021 FS production estimates and Centre for International Economics modeling.

• The project combines conventional hard-rock mining, ultra-high grades, expansion potential and projected after-tax cash flow.

• A district-scale land position and active exploration program extend across the southwestern Athabasca Basin in Saskatchewan.

Uranium market outlook

• 88 GW of new nuclear capacity could increase global capacity by >20% by the early 2030s; restarts and uprates add 8 GW and 45–57M lb of annual uranium demand.

• 38 countries have pledged to triple nuclear capacity by 2050, from 380 GW to 1,200 GW; each 1 GW requires ~200 tonnes of uranium annually.

• The WNA upper scenario projects a 335M lb annual primary uranium deficit in 2040, with demand of ~530M lb; mine supply would need to more than triple from current levels.

• Mine development takes 15–20 years from discovery to production; fewer than five projects have been approved since 2011, with newly discovered supply potentially arriving in the 2040s.

• OECD countries rely on foreign sources for 70% of uranium demand; domestic production in the US, UK and Europe is <1%, while >90% of Western supply is tied to below-market long-term contracts.

Rook I asset and construction

• The 2021 FS reports 239.6M lb of probable reserves at 2.37% U3O8, 256.7M lb of measured and indicated resources inclusive of reserves, and 80.7M lb inferred resources.

• Arrow’s hard-rock geology supports conventional underground mining; underground tailings storage is designed to reduce surface tailings exposure to near zero.

• CNSC construction approval was received March 5, 2026, and major construction began in June 2026.

• Completed site work includes a 5,840-ft airstrip, a commissioned 373-bed camp, effluent diffuser installation and active site road networks.

• Q4 2026 work includes major earthworks, surface infrastructure, shaft-sinking foundations, batch plant operations and production and exhaust shaft terrace pads.