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HSTR.V ·

Heliostar Publishes Inaugural Sustainability Report

TSX.V: HSTR

OTCQX: HSTXF

Heliostar Publishes Inaugural Sustainability Report

Vancouver, Canada – May 21, 2026 – Heliostar Metals Ltd. (“Heliostar” or the “Company”) (TSX.V: HSTR,

OTCQX: HSTXF, FRA: RGG1) is pleased to release its inaugural Sustainability Report. Covering the 2025

fiscal year, the report highlights the Company’s sustainability practices and achievements in

environmental stewardship, health and safety, developing our people, community investment,

responsible governance, and economic impact. The full report can be found on the Company’s website.

Heliostar CEO, Charles Funk, commented, “We’re proud to introduce our first annual Sustainability Report.

It’s a key milestone along Heliostar’s growth into a mid-tier gold producer that reflects our commitment

to sustainable mining and benefiting the communities in which we operate. While we have always strived

to operate in a responsible manner, w ith this report , we have formalized our approach and

communication. As our operations mature and expand, so does our responsibility to be more transparent

about our sustainability priorities and performance metrics. This report gives us a strong foundation for

ongoing accountability, identifies areas for improvement and facilitates an open dialogue with all our

stakeholders.”

Highlights from the 2025 Sustainability Report:

• 99% of our employees and 97% of our procurement spending are based in Mexico, demonstrating

our commitment to local hiring and sourcing

• 84% increase in labour compared to 2024, with 404 employees and 333 contractors working for

Heliostar and our subsidiaries

• Contributed US$1.1 million in social investments, supporting education initiatives , including 612

student scholarships, local infrastructure projects, and public health services

• Reused over 90% of process water through our closed -loop systems, minimizing our freshwater

consumption

• Diverted 38% of all waste from landfills through recycling and reuse initiatives

• Reforested 47 hectares of land with 17,468 native trees, 17% of which were cultivated at our own

nurseries in San Agustin and El Castillo

• Paid US$10.6 million in taxes, royalties, and other payments to governments

• Achieved a Total Recordable Injury Frequency Rate (TRIFR) of 0.60 per 200,000 worked hours

The report has been prepared with reference to the Global Reporting Initiative (GRI) Standards, including

the GRI Sector Standard for Mining. In addition, we have incorporated the Sustainability Accounting

Standards Board (SASB) Metals & Mining Industry St andard (Version 2023 -12) disclosures. These

standards were selected to provide relevant and comparable information to our stakeholders. We are

committed to the continued improvement of the quality and scope of our disclosures.

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

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

About Heliostar Metals Ltd.

Heliostar is a growing gold producer with a goal to produce 500,000 ounces per year by the end of the

decade. The cash flow from the Company’s La Colorada Mine in Sonora and the San Agustin Mine in

Durango supports the development of its 100% owned pipeline of growth projects in Mexico and the USA.

These include the flagship Ana Paula development project in Guerrero, the Cerro del Gallo project in

Guanajuato, and the Goldstrike project in Utah.

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

information relate to, among other things: the Company’s goal of becoming a mid-tier producer, the mine

performance, production plans and the free cashflow generation from our operating mines, all profits

generated from operations to be reinvested directly into our Company’s growth and this reinvestment will

focus on expanding production and growing resources across our portfolio.

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, expectation s, analyses and opinions, which are based on

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

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 est imated 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

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

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

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

regarding 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 abili ty to successfully integrate acquired

assets; the speculative nature of exploration and development, including the risks of diminishing quantities

or grades of reserves; 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.