Investor Presentaiton

Major uranium asset in Australia's highest-grade uranium province The Alligator Rivers Uranium Province, NT (ARUP) 8 700 000mN 200 000mE Vimy Resources Angularli 25.9Mlbs @ 1.29% U₂O² | +500 Million Pounds U3Og endowment (mined and current Resources 1,2) Close analogue to uranium deposits in the Athabasca Basin in Canada, incl.: Arrow (NexGen Energy Ltd) and Hurricane (IsoEnergy Ltd) Significant gold province "forgotten in time3,4" - unexplored DevEx's Nabarlek Project (100%) Centred on the historical Nabarlek Uranium Mine Production History: 24 Mlbs @ 1.84% U3O¹ DevEx holds a dominant ground position of +4,700km² Granted Tenure: Mining Lease and three exploration tenements Recent compilation and assessment of 50 years of exploration data Jabiluka (U,O,, Au) Nabarlek 24 Mlbs @ 1.84% U₂O, (Historical Production) 307 Mlbs UO, @ 0.55% U,O,2 1 Ranger (U,O) 269 Mlbs U₂O' 130 Mlbs @0.11% U₂OB Jabiluka Highway Koongara (U,o₁) Kakadu National Park Jabiru Strategically located in a well established uranium mining jurisdiction See Slide 17 for References. 8 500,000mN 50km U40 6m @ 7.6%U,O Caramal 400 000mE Maningrida Road Coronation Hill U₂O + Au + PGE ○ Prospect Gold Deposit Uranium Deposit EL Applications Granted EL's and ML Cainozoic Cover McArthur Basin Sandstone & Volcanics Pine Creek Basin/Cahill Fm Granite Outcrop Production History 2 Mineral Resource (JORC 2012) 012-018 6

View entire presentation