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

Drill Results

595 Burrard Street, Suite 1723, Vancouver BC, V7X 1J1, Canada - Tel +1 844 753 0045

TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1

Heliostar Drills 88 m Grading 8.82 g/t Gold in Resource

Conversion Drilling and Adds Third Drill Rig at Ana Paula

HIGHLIGHTS:

• 88.05 m grading 8.82 g/t gold from 88.2 m including

o 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 the Ana Paula program to accelerate the drilling program

Vancouver, Canada – October 6, 2025 – Heliostar Metals Ltd. (TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1)

(“Heliostar” or the “Company”) is pleased to announce additional results from the current 15,000 metre drill

program at its 100% owned Ana Paula project in Guerrero, Mexico . The program has the primary goal of

converting inferred ounces to higher confidence classifications, as well as supporting the ongoing Feasibility

Study and testing the next exploration targets around the Ana Paula deposit.

Heliostar CEO, Charles Funk, 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 - hitting higher grade material than is currently estimated

in the block model . We intend to make a construction decision for Ana Paula on the back of a Feasibility

Study that will allow us to have the mine in production at 100,000 ounces per year in 2028. Our

comprehensive plan to de -risk the deposit is ongoing and includes collecting additional technical data

beyond assays that will help us design the mine. We are pushing hard toward this goal and, as such, have

mobilized a third drill rig to the site in order to compress the timeline as much as possible. I see Ana Paula

as a foundational asset of the high-quality mid-tier producer we are growing towards.”

Drilling Program

Heliostar has added a third drill to accelerate the drilling pro gram and has completed 24 holes and 6,529

metres drilled to date. Drilling is designed along north-south sections with angled holes to best define the

overall east-west orientation of the High Grade Panel. Heliostar’s drilling approach at Ana Paula has been

to rotate drilling by approximately 90 degrees from the majority of historic intercepts . This change has

been interpreted by the Company to have contributed to demonstrating more continuous and higher-grade

gold mineralization within the High Grade Panel than previous operators recognized.

Where appropriate, the holes are also being used to collect rock strength data, hydrogeologic data and

samples for further metallurgical studies that will directly influence the Ana Paula mine design in the

ongoing Feasibility Study.

Drill Results Summary

Holes AP-25-327 and AP-25-329 are resource conversion holes drilled at the western end and the central

part of the High Grade Panel. Hole AP-25-327 was drilled along the western edge of the polymictic breccia

host unit and still returned a number of attractive intercepts, including 21.7 metres (“m”) grading 2.75

TSX.V: HSTR

OTCQX: HSTXF

595 Burrard Street, Suite 1723, Vancouver BC, V7X 1J1, Canada - Tel +1 844 753 0045

TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1

grams per tonne (“g/t”) gold in the Parallel Panel from 97.0 m and 20.5 m grading at 4.61 g/t gold from

198.8 m in the High Grade Panel.

AP-25-329 is located approximately 95m southeast of AP -25-327. It is the first north -to-south hole on a

new cross-section through the deposit. The hole intercepted the favourable breccia host unit and returned

a wide, high-grade interval of 88.05 m grading 8.82 g/t gold from 88.2 m through the core of the High Grade

Panel. A near -surface 12.75 m intercept of 3.28 g/t gold through the Parallel Panel has the potential to

expand the resource model to the surface.

Figure 1: Plan Map of the current drill program at Ana Paula

Figure 2: Cross-Section through hole AP-25-329

595 Burrard Street, Suite 1723, Vancouver BC, V7X 1J1, Canada - Tel +1 844 753 0045

TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1

Holes AP-25-326 and AP-25-328 are geotechnical holes for mine development planning and returned assay

results in line with expectations, including a hit of 23.0 m grading 2.86 g/t gold from 389.0 m in AP-25-326.

True widths are unknown. Mineralization at Ana Paula occurs as disseminations or vein stockworks with

variable controls including rock porosity, lithology and fault networks.

Drilling continues at the less well- defined western edge of the High Grade Panel , with results from four

additional holes pending from this area. Recently, drilling has been focused on the centre and eastern edge

of the High Grade Panel, with assays from twelve holes pending from this area.

The next Ana Paula drill results are anticipated to be released in early November.

Drilling Results and Coordinates Tables

Hole ID From

(metres)

To

(metres)

Interval

(metres)

Au

(g/t)

Topcut

Au (to

64 g/t)

Hole

Purpose

AP-25-326 45.3 47.5 2.2 6.29 Geotechnical Hole

and 196.5 203.5 7.0 2.37

and 295.0 296.0 1.0 18.8

and 389.0 412.0 23.0 2.86

including 397.7 412.0 14.3 4.19

AP-25-327 36.15 37.4 1.25 32.1 Resource Hole

and 97.0 118.7 21.7 2.75

including 110.5 112.0 1.5 8.36

and 197.8 260.45 62.65 2.73

including 198.8 219.3 20.5 4.61

and 271.0 276.0 5.0 5.63

AP-25-328 179.5 182.0 2.5 12.25 Geotechnical Hole

and 258.15 261.7 3.55 2.72

AP-25-329 2.0 14.75 12.75 3.29 Resource Hole

and 39.8 46.2 6.4 5.17

and 88.2 176.25 88.05 8.82 8.43

and 88.2 123.7 35.5 13.03 12.06

Table 1: Significant Drill Intersections

Drilling Coordinates Table

Hole ID Easting

(WGS84 Zone 14N)

Northing

(WGS84 Zone 14N)

Elevation

(metres)

Azimuth

(°)

Inclination

(°)

Length

(metres)

AP-25-326 410,055 1,998,093 978.2 180 -55 419.5

AP-25-327 410,105 1,998,141 940.9 180 -55 428.0

AP-25-328 410,086 1,997,923 962.0 80 -55 275.5

AP-25-329 410,162 1,998,070 907.9 180 -60 281.0

Table 2: Drill Hole Details

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TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1

Quality Assurance / Quality Control

Drill core is P Q size, and the core is cut in half, with half sent for analysis. Core samples were shipped to

ALS Limited in Zacatecas, Zacatecas, Mexico, for sample preparation and for analysis at the ALS laboratory

in North Vancouver. The Zacatecas and North Vancouver ALS facilities are ISO/IEC 17025 certified. Gold

was assayed by 30 -gram fire assay with atomic absorption spectroscopy finish , and overlimits were

analyzed by 30-gram fire assay with gravimetric finish.

Control samples comprising certified reference and blank samples were systematically inserted into the

sample stream and analyzed as part of the Company’s quality assurance / quality control protocol.

Statement of Qualified Person

Stewart Harris, P.Geo., a Qualified Person, as such term is defined by National Instrument 43 -101 –

Standards of Disclosure for Mineral Projects, has reviewed the scientific and technical information that

forms the basis for this news release and has appro ved the disclosure herein. Mr . Harris is employed as

Exploration Manager of the Company.

About Heliostar Metals Ltd.

Heliostar is a gold mining company with production from operating mines in Mexico. This includes the La

Colorada Mine in Sonora and the San Agustin Mine in Durango. The Company also has a strong portfolio of

development projects in Mexico and the USA. These include the Ana Paula project in Guerrero, the Cerro

del Gallo project in Guanajuato, the San Antonio project in Baja Sur and the Unga project in Alaska, USA.

FOR ADDITIONAL INFORMATION, PLEASE CONTACT:

Charles Funk

President and Chief Executive Officer

Heliostar Metals Limited

Email: [email protected]

Phone: +1 844-753-0045

Rob Grey

Investor Relations Manager

Heliostar Metals Limited

Email: [email protected]

Phone: +1 844-753-0045

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies

of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Statement Regarding Forward-Looking Information

This news release includes certain "Forward–Looking Statements" within the meaning of the United States

Private Securities Litigation Reform Act of 1995 and "forward– looking information" under applicable

Canadian securities laws. When used in this news rel ease, the words "anticipate", "believe", "estimate",

"expect", "target", "plan", "forecast", "may", "would", "could", "schedule" and similar words or expressions,

identify forward –looking statements or information. These forward– looking statements or infor mation

relate to, among other things, show the full extent of the deposit, upgrade and expand the resource base,

growing our annual production profile in the near term and bringing additional production online.

Forward-looking statements and forward–looking information relating to the terms and completion of the

Facility, any future mineral production, liquidity, and future exploration plans are based on management’s

reasonable assumptions, estimates, expectations, analyses and opinions, which are based on

management’s experience and perception of trends, current conditions and expected developments, and

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TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1

other factors that management believes are relevant and reasonable in the circumstances, but which may

prove to be incorrect. Assumptions have been made regarding, among other things, the receipt of necessary

approvals, price of metals; no escalation in the severity of public health crises or ongoing military conflicts;

costs of exploration and development; the estimated costs of development of exploration projects; and the

Company’s ability to operate in a safe and effective manner and its ability to obtain financing on reasonable

terms.

These statements reflect the Company’s respective current views with respect to future events and are

necessarily based upon a number of other assumptions and estimates that, while considered reasonable by

management, are inherently subject to significant business, economic, competitive, political, and social

uncertainties and contingencies. Many factors, both known and unknown, could cause actual results,

performance, or achievements to be materially different from the results, performance or achievements that

are or may be expressed or implied by such forward–looking statements or forward-looking information and

the Company has made assumptions and estimates based on or related to many of these factors. Such

factors include, without limitation: precious metals price volatility; risks associated with the conduct of the

Company’s mining activities in foreign jurisdictions; regulatory, consent or permitting delays; risks relating

to reliance on the Company’s management team and outside contractors; risks regar ding exploration and

mining activities; the Company’s inability to obtain insurance to cover all risks, on a commercially reasonable

basis or at all; currency fluctuations; risks regarding the failure to generate sufficient cash flow from

operations; risks relating to project financing and equity issuances; risks and unknowns inherent in all mining

projects, including the inaccuracy of reserves and resources, metallurgical recoveries and capital and

operating costs of such projects; contests over title to properties, particularly title to undeveloped

properties; laws and regulations governing the environment, health and safety; the ability of the

communities in which the Company operates to manage and cope with the implications of public health

crises; the economic and financial implications of public health crises, ongoing military conflicts and general

economic factors to the Company; operating or technical difficulties in connection with mining or

development activities; employee relations, labour unrest or unavailability; the Company’s interactions with

surrounding communities; the Company’s ability to successfully integrate acquired assets; the speculative

nature of exploration and development, including the risks of diminishing quantities or grades of re serves;

stock market volatility; conflicts of interest among certain directors and officers; lack of liquidity for

shareholders of the Company; litigation risk; and the factors identified under the caption “Risk Factors” in

the Company’s public disclosure documents. Readers are cautioned against attributing undue certainty to

forward–looking statements or forward -looking information. Although the Company has attempted to

identify important factors that could cause actual results to differ materially, there may be other factors

that cause results not to be anticipated, estimated or intended. The Company does not intend, and does not

assume any obligation, to update these forward– looking statements or forward -looking information to

reflect changes in assumptions or changes in circumstances or any other events affecting such statements

or information, other than as required by applicable law.