Heliostar files NI 43-101 report for Cerro del Gallo
Heliostar Files Regulatory Report for Cerro del Gallo, a Routine Step After December's PFS

The news release dated 2026-01-26 announces the filing of a NI 43-101 Prefeasibility Study (PFS) Technical Report for the Cerro del Gallo project on SEDAR+ and the company's website. The report, effective December 11, 2025, was prepared by Kappes, Cassiday & Associates. This filing fulfills regulatory disclosure requirements following the initial PFS results announcement on December 11, 2025.
This news has no material impact. The filing is an administrative, routine step required by securities regulations after the material PFS results were disseminated over a month prior. No new technical or financial information is provided.
Heliostar Metals is a gold producer with a multi-asset portfolio in Mexico. The company operates two open-pit, heap leach mines: La Colorada (Sonora) and San Agustin (Durango). Its flagship development project is the Ana Paula underground gold project in Guerrero, which hosts a high-grade resource (5.4 g/t Au). A Positive Preliminary Economic Assessment (PEA) released in November 2025 outlined a potential 101,000 oz/year operation with low all-in sustaining costs (US$1,011/oz). The company aims to grow into a mid-tier producer targeting 500,000 ounces of annual production by the end of the decade.