Heliostar Drills Multiple Gold Intercepts over 200 Metres From Pit Edge at San Agustin

HIGHLIGHTS: Corner Expansion Zone 35.1 m grading 0.40 g/t Aueq from 1.5 m 19.8 m grading 0.60 g/t Aueq from 1.5 m 54.9 m grading 0.23 g/t Aueq from 0 m 53.3 m grading 0.27 g/t Aueq from 48.8 m 13.7 m grading 0.81 g/t Aueq from 67.0 m 30.5 m grading 0.64 g/t Aueq from 48.8 m Phase 3 SW Zone 15.2 m grading 0.27 g/t Aueq from 24.4 m 13.7 m grading 0.31 g/t Aueq from 9.1 m 16.8 m grading 0.32 g/t Aueq from 27.4 m MKT Zone 16.8 m grading 0.50 g/t Aueq from 9.1 m 33.5 m grading 0.27 g/t Aueq from 30.5 m Corner Expansion Zone intercepts over 200 metres from reserve edge and remains open Second rig added and program expanded to 15,000-18,000 metres in 2026 Results indicate potential for resource expansion that could extend mine life Vancouver, British Columbia--(Newsfile Corp. - March 17, 2026) - Heliostar Metals Ltd. (TSXV: HSTR) (OTCQX: HSTXF) (FSE: RGG1) ("Heliostar" or the "Company") is pleased to announce the Company's first results from drilling at its 100% owned San Agustin Mine in Durango, Mexico.