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Heliostar Presents Second Quarter 2025 Financial Results Q2 2025 Quarter Highlights

Financials

TSX.V: HSTR

OTCQX: HSTXF

Heliostar Presents Second Quarter 2025 Financial Results

Q2 2025 Quarter Highlights

• Q2 2025 production of 7,396 Gold Equivalent Ounces (GEOs)

• Q2 2025 sales of 8,556 GEOs

• Consolidated cash costs of $1,413 per GEO sold and consolidated a ll-in sustaining costs (“AISC”)

of $1,541 for Q2 2025

• The Company is on track to achieve its annual sales guidance of 3 1,000 to 41,000 GEOs, annual

cash cost of $1,800-1,900 per GEO sold and AISC of $1,950-2,100 per GEO sold for 2025

• Mine operating earnings of $14.3M in Q2 2025

• Closing the quarter with $29.7M in cash, $51.7 million in working capital and no debt

Vancouver, Canada, September 2, 2025 – Heliostar Metals Ltd. (TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1)

(“Heliostar” or the “Company”) today reported unaudited financial results for the three months ended

June 30, 2025 (“Q2 2025”), which corresponds to the first quarter of Heliostar’s fiscal reporting year 2025.

Results are presented in US dollars, unless stated.

Heliostar CEO, Charles Funk, commented, “Q2 2025 was another strong quarter for Heliostar with the

mines continuing to perfor m as expected, funding our production and resource growth programs , and

further strengthening our financial position. Our consolidated margin continues to expand in a strong gold

price environment, with the Company reporting an o perating margin of 51% . Looking forward, the

Company is restarting mining at San Agustin in late 2025 and expects to expand its production profile in

Q4 202 5 and into 2026. We continue to deliver on our commitment to grow the Company to a mid-

tier gold producer.

The strong balance sheet and operating cash flow allow Heliostar to accelerate our growth plans. At La

Colorada, we are drilling additional historical stockpiles with the objective of extending production through

2026 ahead of the planned pit expansion at Veta Madre. At San Agustin, the Company has satisfied all

permitting requirements to dev elop the Corner area, and preparations are ongoing to restart mine

operations before the end of the year. This restart is fully funded from cash on the Company’ s balance

sheet. Further, the Company has committed to an expanded $9.5 million program at Ana Paula in 2025,

including a minimum 15,000 metre drilling with the objective of delivering mineral reserves to support a

10-year life of mine in the upcoming feasibility study.

In the quarter, the Company has been working on a number of technical reports to unlock additional value

from our assets. The slightly delayed, updated La Colorada technical report will be completed in the

coming weeks. A pre-feasibility study is planned for Cerro Del Gallo this year, and the feasibility study for

Ana Paula is continuing to progress.”

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Second Quarter 2025 Quarterly Conference Call

Heliostar will host a quarterly conference call on T hursday, September 4, 2025, at 1 1:00 AM, Eastern

Time/8:00 AM Pacific Time. The call will provide a corporate update following the release of our financial

and operating results for the second quarter of 2025.

Please use the link here to register for the call or visit the Company website at www.heliostarmetals.com.

Q2 2025 Operational and Financial Highlights

Total gold production of 7, 396 gold equivalent ounce s (“GEO”) (7,262 gold ounces) in Q2 2025. Gold

production was realized from mining the Junkyard Stockpile at the La Colorada mine, as well as re-leaching

the previously stacked ore at the La Colorada and the San Agustin mines. Consolidated production also

benefited from a nominal contribution from residual production from the rinsing of residual leach pads at

the El Castillo mine. Production year-to-date (“YTD”) 2025 is consistent with the 2025 guidance issued by

the Company on February 4, 2025, which remains unchanged.

Total Cash Cost of $1,413 per GEO produced in Q 2 2025. The combined YTD cash cost (see “Non-IFRS

Measures”) is $1,257 per GEO.

Total AISC of $1,541 per GEO sold in Q 2 2025. The consolidated YTD AISC (see “ Non-IFRS Measures is

$1,602 per GEO.

Both Total Cash Costs and AISC are ahead of the 2025 guidance range; however, the Company anticipates

costs will increase in the lat ter half of the year as residual leaching at San Agustin decline s ahead of

stacking new ore from the Corner area, and particularly due to one -off capital costs incurred to restart

primary mining from the Corner area.

Mine Operating Earnings of $14.3 million in Q2 2025. The Company continued to report strong results in

Q2 2025 with continued improvements in operating performance , as well as benefiting from selling into

a rising gold market. Mine operating earnings YTD 2025 are $26.1 million.

Net income attributable to shareholders of $1.9 million, or $0.01 per share, for Q2 2025. Net income of

$1.9 million ($0.01 per share) for Q2 2025 compared to a net loss attributable to shareholders of $2.3

million ($0.01 loss per share) for Q2 2024.

Strengthened financial position and liquidity: On June 30, 2025, the Company had cash of $29.7 million

and working capital (defined as current assets less current liabilities) of $51.7 million, with an increase in

working capital of $10.1 million over the prior quarter. As of June 30, 2025, the Company had no debt.

Achieved stable production at La Colorada mine. The mining of new ore restarted at the Junkyard

Stockpile in January 2025. Production from the Junkyard Stockpile has increased steadily during Q2 2025,

with operating costs as expected, grade in line with the reserve model and ore tonnes reconciling slightly

higher than expected . Production YTD 2025 was 7,850 GEOs (7,572 gold ounces). Ore feed from the

Junkyard Stockpile is planned to continue into 2026, with other historical stockpiles identified to provide

additional material to be crushed and stacked on the leach pad thereafter. Further, subject to receiving

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certain regulatory approvals, the Company intends to expand the Veta Madre pit to exploit 43k ounces of

gold reserves.

Restart of mining at San Agustin. The Company was able to complete the regulatory requirements to

enable the approval to restart mining at San Agustin from the Corner area. Preparation work to commence

mining is underway, and the Company anticipates production from the Corner starting in Q4 2025 and

continuing into 2027. Recoverable reserves at the Corner are estimated at 44.5k ounces of gold.

Continuing to advance the development of the flagship Ana Paula Project. In July 2025, the Company

commenced a n expanded $ 9.5 million exploration and development program , including a minimum

15,000 metre drill program at Ana Paula Project . The program has the objective of upgrading existing

inferred mineral resources to demonstrate more than a 10-year mine life in the upcoming feasibility study.

Technical and regulatory programs are being advanced in parallel and will continue through 2026 to

complete a bankable feasibility study.

Preparation of updated technical reports. The Company is concluding an updated technical report for La

Colorada and is planning to complete a prefeasibility study (“PFS”) for the Cerro del Gallo Project in 2025

and continues to advance the Ana Paula Project feasibility study.

Operational and Financial Results

Results are reported for the three months ended June 30 , 2025 (“Q2 2025”), which corresponds to the

first quarter of Heliostar’s fiscal reporting year 2026.

A summary of the Company’s consolidated operational and financial results for the reporting period is

presented below:

Key Performance Metrics Q2 2025 Q2 2024

Operational

Gold produced 7,262 0

Gold equivalent ounces (“GEOs”) produced 7,419 0

Gold sold 8,375 0

Gold equivalent ounces (“GEOs”) sold 8,556 0

Cash cost1 1,413 0

All-in sustaining costs1 (“AISC”) 1,541 0

Financial (in ‘000s)

Revenues 27,926 0

Mine operating earnings 14,256 0

Exploration expenses 1,916 1,502

Net income (loss) 1,892 (2,293)

Cash 29,703 2,379

Total assets 122,943 22,574

Working Capital 51,687 (1,121)

1. Non-IFRS measure. Refer to the “Non-IFRS Measures” section of this news release.

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Operational Review

Consolidated Production and Costs

Q2 2025 was the Company’s third reporting period with metals production. The Company had no

production in Q2 2024.

Gold production of 7,396 GEOs (7,262 gold ounces) for Q2 2025 was reported from the La Colorada mine

and the San Agustin mine , with a nominal amount reported from the El Castillo mine , which has

commenced reclamation . The combined YTD 2025 production of 16,477 GEOs of gold ( 16,039 gold

ounces) is consistent with the 2025 guidance issued by the Company.

The combined cash costs for the producing operations w ere $1,413 per GEO sold, and the consolidated

AISC was $1,541 per GEO sold. The combined cash costs and AISC are currently ahead of the 2025 guidance

issued by the Company, and full-year results are expected to be within the guidance range.

La Colorada Mine

Operating results for Q2 2025 were as follows:

La Colorada Q2 2025 YTD 2025

Gold produced oz 3,464 7,572

Gold equivalent ounces (“GEOs”) produced GEO 3,538 7,850

Gold sold oz 3,631 6,743

Gold equivalent ounces (“GEOs”) sold GEO 3,747 6,997

Cash cost1 $/GEO sold 1,296 1,101

All-in sustaining costs1 (“AISC”) $/GEO sold 1,425 1,232

In January 2025, mining of new ore restarted at the Junkyard Stockpile by the Company , alongside re-

leach activities started by the previous operator.

During the reporting period, the La Colorada mine produced 3,538 GEOs (3,464 gold ounces ). Total

revenues of $12.0 million were reported from sales of 3,747 GEOs. A series of actions were implemented

at La Colorada to improve re -leaching performance, with gold production from re -leaching exceeding

plans. Production from the Junkyard Stockpile has increased steadily during Q2 2025 and continues to

meet all expected parameters.

For the reporting period, cash costs were $1,296 per GEO ($1,101 per GEO YTD 2025), and AISC was $1,425

per GEO ($1,232 per GEO YTD 2025), currently an improvement on 2025 guidance.

The Company plans to continue mining of the Junkyard Stockpile through 2025 and into 2026, with other

historical stockpiles identified to provide additional, continued feed to the crushers thereafter. Further,

subject to receiving certain regulatory approvals, the Company intends to expand the Veta Madre pit to

exploit 43k ounces of gold reserve, which will be timed sequentially with the ore feeds from the historical

stockpiles.

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San Agustin Mine

Operating results for Q2 2025 were as follows:

San Agustin Q2 2025 YTD 2025

Gold produced oz 3,564 7,975

Gold equivalent ounces (“GEOs”) produced GEO 3,622 8,129

Gold sold oz 4,595 8,752

Gold equivalent ounces (“GEOs”) sold GEO 4,660 8,930

Cash cost1 $/GEO sold $ 1,529 1,407

All-in sustaining costs1 (“AISC”) $/GEO sold $ 1,597 1,485

In September 2024, the previous owners of San Agustin placed the mine under care and maintenance,

with metals production continuing from the re-leaching of residual leach pads.

During the reporting period, the San Agustin mine produced 3,622 GEOs ( 3,564 gold ounces) . Total

revenues of $14.9 million were reported from sales of 4,660 GEOs. A series of actions were implemented

at San Agustin to improve re-leaching performance, with gold production from re-leaching exceeding 2025

guidance.

For the reporting period, cash costs were $1, 529 per GEO ($ 1,407 per GEO YT D 2025), and the

consolidated AISC was $1,597 per GEO ($1,485 per GEO YTD 2025), which is currently an improvement on

2025 guidance.

The Company has completed regulatory requirements to enable the restart of mining at San Agustin from

the Corner area (see News Release dated July 22, 2025). Work to commence mining is underway, including

administrative programs and small ancillary capital projects, and the Company anticipates production

from the Corner starting in Q4 2025 and continuing into 2027. Recoverable reserves at the Corner are

estimated at 44.5k ounces of gold.

El Castillo Mine

Operating results for Q2 2025 were as follows:

El Castillo Q2 2025 YTD 2025

Gold produced oz 234 491

Gold equivalent ounces (“GEOs”) produced GEO 236 499

Gold sold oz 149 646

Gold equivalent ounces (“GEOs”) sold GEO 150 652

Cash cost1 $/GEO sold 782 866

All-in sustaining costs1 (“AISC”) $/GEO sold 2,679 1,729

In late 2022, the previous owners of El Castillo placed the mine under care and maintenance, and the mine

is now considered in reclamation. Some nominal metal production has been possible from the rinsing of

residual heap leach pad during reclamation activities.

During the reporting period, the El Castillo mine produced 236 GEOs (234 gold ounces). Total revenues of

$0.5 million were reported from sales of 150 GEOs.

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Reclamation expenditures at the El Castillo mine for the three months ended June 30, 2025, were $nil;

however, $1.1 million was incurred in indirect reclamation expenditures for maintenance of land, permits

and general expenses required to maintain the sit e in good standing. Further reclamation work will

continue to be performed in 2025.

Ana Paula Project

Development and Exploration expenditures at the flagship Ana Paula Project were $0.8 million in Q2 2025

($1.2 million in Q2 2024).

During Q2 2025, the Company initiated a $9.5 million exploration and development budget, including a

minimum 15,000 metre drilling program at Ana Paula with the objective of delivering mineral reserves to

support a 10-year life of mine. On August 27, 2025, the Company announced initial results from the first

resource conversion holes, including 30.2 metres at 6.29 grams per tonne gold.

During Q2 2025, the Company completed trade-off studies and determined a preferred process flowsheet

for the project. Technical and regulatory programs are being advanced and will continue through 2026 to

complete a bankable feasibility study.

Cerro del Gallo Project

The process of advancing the additional development and engineering required at t he Cerro del Gallo

Project is ongoing.

During Q2 2025, the Company began a strategic review of the Project and initiated technical programs

with the objective of identifying and evaluating the next development steps.

During Q2 2025, the Company commissioned the preparation of a prefeasibility study for the Cerro de l

Gallo Project. The study is planned to be completed in 2025 . All major environmental and other permits

will need to be obtained before an investment decision can be considered by the Company.

Funding Overview

In the three months ended June 30, 2025, 5,254,548 warrants and 422,082 stock options were exercised

for total proceeds of $1.3 million and 906,249 RSUs were converted.

As of June 30, 2025, the Company had no debt.

Non-IFRS Measures. This news release refers to certain financial measures, such as all-in-sustaining costs,

which are not measures recognized under IFRS and do not have a standardized meaning prescribed by

IFRS. These measures may differ from those made by other companies and, accordingly, may not be

comparable to such measures as reported by other companies. These measures have been derived from

the Company’s financial statements because the Company believes that they are of assistance in

understanding the results of operations and its financial position. Certain additional disclosures for these

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specified financial measures have been incorporated by reference and can be found in the Company's

MD&A for Q4 2024, available on SEDAR+.

Cash costs. The Company uses cash costs per ounce of metals sold to monitor its operating performance

internally. The most directly comparable measure prepared in accordance with IFRS is the cost of sales.

The Company believes this measure provides investors and analysts with useful information about its

underlying cash costs of operations. The Company also believes it is a relevant metric used to understand

its operating profitability and ability to generate cash flow. Cash costs are measures developed by metals

companies in an effort to provide a comparable standard; however, there can be no assurance that the

Company’s reporting of these non- IFRS financial measures are similar to those reported by other mining

companies. They are widely reported in the metals mining industry as a benchmark for performance , but

do not have a standardized meaning and are disclosed in addition to IFRS financial measures. Cash costs

include production costs, refinery and transportation costs and extraordinary mining duty. Cas h costs

exclude non-cash depreciation and depletion and site share-based compensation.

AISC. All-in Sustaining Costs ("AISC”) more fully defines the total costs associated with producing precious

metals. The AISC is calculated based on guidelines published by the World Gold Council (WGC), which were

first issued in 2013. In light of new accounting standards and to support further consistency of application,

the WGC published an updated Guidance Note in 2018. Other companies may calculate this measure

differently because of differences in underlying principles and policies applied. Differences may also arise

due to a different de finition of sustaining versus growth capital. Note that with respect to AISC metrics

within the technical reports, because such economics are disclosed at the project level, corporate general

and administrative expenses were not included in the AISC calculations.

Statement of Qualified Persons

Gregg Bush, P.Eng., Mike Gingles, and Stewart Harris, P. Geo., Qualified Persons, as such term is defined

by National Instrument 43-101 – Standards of Disclosure for Mineral Projects, have reviewed the scientific

and technical information that forms the basis fo r this news release and ha ve approved the disclosure

herein. Mr. Bush is employed as Chief Operating Officer of the Company, Mr. Gingles is employed as Vice

President of Corporate Development, and Mr. Harris is employed as Exploration Manager.

About Heliostar Metals Ltd.

Heliostar aims to grow to become a mid -tier gold producer. The Company is focused on increasing

production and developing new resources at the La Colorada and San Agustin mines in Mexico, and on

developing the 100% owned Ana Paula Project in Guerrero, Mexico.

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

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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 Companies 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

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 pr operties, 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