Kiggavik — uranium project

Non-Athabasca uranium project in Nunavut held indirectly through Denison's 50% ownership of JCU, which holds 33.8118%, giving Denison an effective 16.9059% interest; Orano Canada is the operator. The estimates are as reported by Orano SA in its 2023 Activities Report and converted for grades from %U to %U3O8 and for pounds from tonnes U to pounds U3O8; cut-off grades and the assumptions, parameters and methods used are unknown. Denison is not treating these as current mineral resources.