Heliostar (TSXV: HSTR) Drills 8.82 g/t Gold Over 88m Adds Third Rig

Company Update

Heliostar Drills 88 m Grading 8.82 g/t Gold in Resource Conversion Drilling and Adds Third Drill Rig at Ana Paula

By: Newsfile • October 06, 2025 at 06:30 AM EDT

Highlights

  • 88.05 m grading 8.82 g/t gold from 88.2 m including 35.5 m grading 13.03 g/t gold from 88.2 m
  • 6.4 m grading 5.16 g/t gold from 39.8 m
  • 14.3 m grading 4.19 g/t gold from 397.7 m
  • 20.5 m grading 4.61 g/t gold from 198.8 m
  • A third drill rig has been added to accelerate the Ana Paula drilling program

Vancouver, British Columbia – Heliostar Metals Ltd. (TSXV: HSTR; OTCQX: HSTXF; FSE: RGG1) (“Heliostar” or the “Company”) is pleased to announce additional results from its ongoing 15,000-metre drill program at the 100%-owned Ana Paula project in Guerrero, Mexico. The program aims to convert inferred ounces to higher-confidence categories, support the Feasibility Study, and test new exploration targets around the deposit.

Charles Funk, CEO, commented: “The drill results from the ongoing Ana Paula program continue to provide exciting results. The infill-focused drilling consistently returns broad, continuous intervals of strong grades as expected and—in some instances—higher-grade material than currently estimated. We intend to make a construction decision for Ana Paula following a Feasibility Study, targeting production of 100,000 ounces per year in 2028. To accelerate the process, a third drill rig has been mobilized to the site.”

Drilling Program Overview

Heliostar has added a third drill rig and completed 24 holes totaling 6,529 metres to date. Drilling is oriented along north-south sections with angled holes to define the east-west orientation of the High Grade Panel. The current drilling direction is rotated approximately 90° from historical intercepts, which has revealed more continuous and higher-grade mineralization.

Figure 1: Plan Map of current drill program at Ana Paula
Figure 1: Plan Map of the current drill program at Ana Paula
Figure 2: Cross-section through hole AP-25-329
Figure 2: Cross-section through hole AP-25-329

Table 1: Significant Drill Intersections

Hole IDFrom (m)To (m)Interval (m)Au (g/t)Purpose
AP-25-32645.347.52.26.29Geotechnical Hole
196.5203.57.02.37
389.0412.023.02.86
AP-25-32736.1537.41.2532.1Resource Hole
97.0118.721.72.75
197.8260.4562.652.73
AP-25-328179.5182.02.512.25Geotechnical Hole
AP-25-3292.014.7512.753.29Resource Hole
88.2176.2588.058.82

Table 2: Drill Hole Details

Hole IDEasting (WGS84 Zone 14N)NorthingElevation (m)Azimuth (°)Inclination (°)Length (m)
AP-25-326410,0551,998,093978.2180-55419.5
AP-25-327410,1051,998,141940.9180-55428.0
AP-25-328410,0861,997,923962.080-55275.5
AP-25-329410,1621,998,070907.9180-60281.0

Quality Assurance / Quality Control

Drill core is PQ size and cut in half, with one half sent to ALS Limited in Zacatecas, Mexico, for preparation and to ALS North Vancouver for analysis. Both facilities are ISO/IEC 17025 certified. Gold assays were conducted via 30-gram fire assay with AAS finish, and overlimits by gravimetric finish. Certified reference and blank samples were systematically inserted.

Qualified Person

Stewart Harris, P.Geo., Exploration Manager, is the Qualified Person as defined by NI 43-101 and has reviewed and approved the scientific and technical content of this release.

About Heliostar Metals Ltd.

Heliostar is a gold mining company with production from operating mines in Mexico, including the La Colorada Mine in Sonora and the San Agustin Mine in Durango. Development projects include Ana Paula in Guerrero, Cerro del Gallo in Guanajuato, San Antonio in Baja Sur, and the Unga project in Alaska, USA.

For Additional Information

Charles Funk — President & CEO
Email: charles.funk@heliostarmetals.com • Phone: +1 844-753-0045

Rob Grey — Investor Relations Manager
Email: rob.grey@heliostarmetals.com • Phone: +1 844-753-0045

Cautionary Statement Regarding Forward-Looking Information

This news release includes “Forward-Looking Statements” within the meaning of the U.S. Private Securities Litigation Reform Act of 1995 and “forward-looking information” under Canadian securities laws. Forward-looking statements involve known and unknown risks, uncertainties, and other factors that could cause actual results to differ materially from those expressed. These include, among others, metal price volatility, permitting delays, financing risks, operational challenges, and political or regulatory uncertainties. The Company undertakes no obligation to update forward-looking information except as required by law.

Past performance is not an indicator of future returns. NIA is not an investment advisor and does not provide investment advice. Always do your own research and make your own investment decisions. NIA has received compensation from HSTR of US$30,000 cash for three months of coverage and could receive up to US$100,000 cash for twelve months of coverage. This message is meant for informational and educational purposes only and does not provide investment advice.