Standard Uranium Initiates 2026 Drill Program at the Davidson River Uranium Project, Southwest Athabasca Basin

Executive Summary

• Standard Uranium has commenced its 2026 diamond drilling program at the flagship Davidson River Uranium Project in Saskatchewan's Southwest Athabasca District.
• The helicopter-supported campaign is planned to exceed approximately 8,000 meters across three major structural corridors (Bronco, Thunderbird, and Warrior) over a 12-week period.
• Target prioritization leverages newly integrated ExoSphere Multiphysics surveys (3D ANT, HVSR, ground gravity) combined with historical drilling and machine-learning modeling to focus on high-grade basement-hosted uranium mineralization.

Key Details

• Drilling Commencement: Field crews arrived June 1, 2026, with drilling officially beginning May 29, 2026.
• Program Scope & Duration: ~8,000 meters of helicopter-supported diamond drilling planned over approximately 12 weeks.
• Equipment: Two drill rigs will be deployed to test high-priority targets.
• Target Corridors: Bronco, Thunderbird, and Warrior conductive corridors.
• Geophysical Integration: First-ever ExoSphere Multiphysics surveys completed in partnership with Fleet Space Technologies, integrating 3D Ambient Noise Tomography (ANT), Horizontal-to-Vertical Spectral Ratio (HVSR), and Ground Gravity datasets.
• Targeting Methodology: Multiphysics data integrated with prior drill results, ground gravity, EM conductors, and ALS GoldSpot SmartMatch machine-learning targeting to identify density-low anomalies indicative of hydrothermal alteration.
• Project Land Base: Davidson River occupies 30,737 hectares across ten contiguous mineral claims along structurally favorable trends in the Southwest Athabasca Basin.
• Grade Definition: High-grade uranium mineralization is defined as concentrations greater than 1.0 wt.% U3O8.
• Qualified Person: Sean Hillacre, P.Geo., President and VP Exploration, has reviewed and approved all scientific and technical information per NI 43-101 standards.
• Historical Data Disclaimer: Historical sampling results from previous operators are unverified by the Company or a qualified person and should not be relied upon; future exploration may include verification.

Notable Quotes

• Sean Hillacre, President & VP Exploration: "We are extremely excited to return to drilling our flagship project for the first time since 2022. Our technical team has done an exceptional job advancing the Project over the last several years and armed with our new Multiphysics datasets we are applying a discovery-driven approach to what we believe are the strongest drill targets we have ever had at Davidson River. The combination of new data, refined geological interpretation, and a much higher-confidence targeting approach gives us tremendous enthusiasm heading into this next phase of exploration."