ISOENERGY AND PUREPOINT INTERSECT UP TO 8.1% U3O8 AT DORADO PROJECT

Executive Summary

• IsoEnergy Ltd. and Purepoint Uranium announced partial assay results from the 2025 summer drill program at their Dorado JV, highlighting a high‑grade intercept of 0.4 m @ 8.1 % U₃O₈ in hole PG25‑07A.
• The program completed 5,030 m across 11 holes before wildfires forced an early shutdown; additional drilling at Serin and Turaco targets provided valuable geophysical calibration data.
• Follow‑up drilling is planned for early 2026 pending final assay results and geological interpretation, indicating continued upside potential for the Dorado Project.

Key Details

• Hole PG25‑07A (Nova discovery zone) – 2.1 m @ 1.62 % U₃O₈ overall; includes:
• 0.4 m @ 8.13 % U₃O₈ (core width)
• 4.9 m @ 0.52 % U₃O₈, with sub‑intervals of 0.3 m @ 2.47 % and 0.4 m @ 2.92 % U₃O₈.
• Additional reported intervals (previously announced):
• PG25‑04: 0.6 m @ 0.96 % U₃O₈; 0.4 m @ 0.15 % U₃O₈.
• PG25‑05: 1.0 m @ 2.19 % U₃O₈; includes 0.3 m @ 5.38 % U₃O₈ and 0.3 m @ 0.10 % U₃O₈.
• Turaco Grid – Two holes (TUR25‑01, TUR25‑02) totalling 832 m; no anomalous radioactivity encountered; highest downhole gamma count 578 cps, used for geophysical model calibration.
• Serin Grid – Two holes (SL25‑10, SL25‑11) totalling 1,032 m; SL25‑11 intersected a 6‑m chloritized pegmatite with up to 1,200 cps gamma, providing structural insight despite no uranium mineralization.
• Program Scope: Planned 5,400 m summer drill program curtailed at 5,030 m due to regional wildfires limiting helicopter access and creating hazardous field conditions.
• Future Work: Full assay suite pending; detailed geochemical and structural interpretation to guide a 2026 follow‑up drilling campaign focused on expanding the Nova zone and testing additional corridors across Dorado.
• Qualified Persons: Dr. Dan Brisbin (IsoEnergy VP Exploration) and Scott Frostad (Purepoint VP Exploration) reviewed and approved technical information per NI 43‑101.

Notable Quotes

“Eight percent uranium is an excellent grade from the centre of the very strong radioactive interval drilled by hole 7A,” – Chris Frostad, President & CEO, Purepoint Uranium.
“These assays reinforce the strength of this newly discovered system and provide a solid anchor point as we continue to test the mineralized structure in all directions.” – Chris Frostad.