ISOU News & Events

IsoEnergy provides the following update regarding wildfire activity in the vicinity of its Larocque East project in northern Saskatchewan. A wildfire, believed to have been caused by lightning, is currently burning in the vicinity of the Project. While the fire is not currently posing a direct threat to the Project site, the Saskatchewan Public Safety Agency has advised that conditions are too dangerous for exploration work to proceed. As advised by the SPSA, IsoEnergy has completed an orderly evacuation of most of its field personnel from the Project and has temporarily suspended exploration activities. Based on current guidance from the SPSA, personnel could remain away from the Project for up to one week, subject to changing wildfire conditions. Three contractors remain at the camp to operate pumps and sprinkler systems as a precautionary measure to help protect site infrastructure. Should the wildfire pose a direct threat to the camp, these personnel will be evacuated immediately in accordance with established safety protocols. The safety of the company's employees and contractors remains its highest priority. The company confirms that all personnel have been accounted for and no injuries have been reported. As part of the evacuation, crews have implemented precautionary measures to help protect the camp, drill core storage and equipment where it is safe to do so. The company is also working closely with the SPSA and is seeking confirmation regarding measures to protect Project infrastructure while access to the site remains restricted. IsoEnergy continues to monitor the situation in coordination with the SPSA and will provide further updates as warranted. Exploration activities will resume once authorities determine it is safe to return to site. Based on current productivity and a typical summer drill season, a one-week evacuation should not impact the company's ability to complete the current 8,000 metre drill program.

IsoEnergy announced the commencement of its 2026 summer exploration program on the Larocque East project, which hosts the high-grade Hurricane deposit in the eastern Athabasca Basin, Canada. The program is planned to comprise approximately 8,000 m of diamond drilling across up to 20 drill holes, focused on following up high-grade winter 2026 results. Hurricane hosts a current Mineral Resource of 48.6 Mlb U3O8 at 34.5% U3O8 Indicated, and 2.7 Mlb U3O8 at 2.2% U3O8 Inferred. Winter 2026 drilling returned 4.21% UO over 3.5 m, including 11.61% UO over 1.0 m, with additional intercepts of 2.75% UO over 0.5 m and 1.75% UO over 0.5 m, approximately 525 m east of the resource envelope. Summer drilling is designed to test the South Trend which intersected high grade mineralization along the J-L fault corridor. In addition to Larocque East, IsoEnergy has 14 prospective early-stage projects in the eastern Athabasca Basin on which a pipeline of drill targets is being developed.

IsoEnergy is pleased to announce that it has entered into an equity distribution agreement with Virtu Canada Corp. and Virtu Americas LLC. Pursuant to the Distribution Agreement, the company may distribute up to C$50M of common shares in the capital of the company, from time to time through the Agents. This ATM Program replaces the company's previous at-the-market equity program announced on June 2, 2025, which has since been terminated.