Heliostar drills 99.8 m grading 10.9 g/t Au at Ana Paula expansion zone

HIGHLIGHTS: High Grade Panel 99.8 m grading 10.90 g/t gold from 50.5 m 37.0 m grading 6.95 g/t gold from 16.8 m Expansion Zone 49.6 m grading 2.88 g/t gold from 539.4 m, including 9.05 m grading 9.49 g/t gold 16.95 m grading 3.49 g/t gold from 613.2 m North Zone Linkage 21.6 m grading 10.38 g/t gold from 127.0 m, including 6.9 m grading 26.18 g/t gold Expansion Zone remains open to the north, southwest and at depth, with drilling ongoing Feasiblity Study on track for Q2, 2027 with progress update planned for Q3, 2026 Vancouver, British Columbia--(Newsfile Corp. - June 25, 2026) - Heliostar Metals Ltd. (TSXV: HSTR) (OTCQX: HSTXF) (FSE: RGG1) (" Heliostar " or the " Company ") is pleased to announce additional drill results from its 100% owned Ana Paula project in Guerrero, Mexico. Assays in this release are from both the infill drill program on the High Grade Panel and down-dip exploration drilling at the Expansion Zone. Heliostar CEO, Charles Funk, commented, "The Expansion Zone at Ana Paula continues to grow with hits to the north, south and southwest of the last reported 101 metres grading 5.34 g/t gold intercept.

These step-out holes show broad intervals of gold mineralization with high-grade sub-intervals demonstrating this zone is open in multiple directions. Drilling continues at the Expansion Zone. These intercepts immediately beneath the Feasibility Study envelope suggest there is potential for a much bigger prize at Ana Paula." "Infill drilling results for the Feasibility Study continue to return stellar intercepts and point to a 'full cycle' asset with profitability significantly higher than the industry average.

We intend to provide a study, engineering, permitting and overall development progress update for Ana Paula in Q3. We remain on track to deliver the Feasibility Study in Q2, 2027 and to bring the mine into production in the second half of 2028." Drilling Pro