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Heliostar Delivers Strong First Quarter 2025 Results Q1 2025 Operational and Financial Highlights

Financials

TSX.V: HSTR

OTCQX: HSTXF

Heliostar Delivers Strong First Quarter 2025 Results

Q1 2025 Operational and Financial Highlights

• Gold equivalent ounce ("GEO") production of 9,082 GEOs and sales of 8, 034 GEOs for Q1 2025.

The Company is on track to achieve annual sales guidance of 31,000 to 41,000 GEOs for 2025

• Preliminary interim consolidated cash costs of US$ 1,175-1,275 per GEOs sold and consolidated

all-in sustaining costs (“AISC”) of US$1,375-1,475 for Q1 2025. The Company is on track to achieve

its annual cash cost guidance range of US$1,800-1,900 per GEOs sold and AISC of US$1,950-2,100

per GEOs sold

• Average sale price of US$2,875 per ounce of gold for Q1 2025

• Closing of the quarter with US$27M in cash and no debt

Vancouver, Canada, April 28, 202 5 – Heliostar Metals Ltd. (TSX.V: HSTR, OTCQX: HSTXF, FRA: RGG1)

(“Heliostar” or the “Company”) is pleased to report preliminary interim results for the three months ended

March 31, 2025 (“Q1 2025”), which corresponds to the fourth quarter of Heliostar’s fiscal reporting year

2024-25.

The Company plans to host a c orporate update webinar on May 13 th, 2025 , at 8:00AM Pacific

Time/11:00AM Eastern Time. Full fiscal year-end reporting is anticipated in late July 2025.

Heliostar CEO, Charles Funk, commented, “The first quarter of 2025 was a very strong, first full quarter of

production for the Company. We restarted production at La Colorada, fully paid off the acquisition debt

and returned lower costs than budgeted.

In Q2, production is expected to decrease due to drawdown of inventory on the leach pad at San Agustin

prior to a planned restart of primary mining activities later in 2025. We remain well on track to meet our

production and cost guidance for 2025.

Heliostar exited the quarter with a strong cash balance of US$27M. This allows us to expand the drilling

program at La Colorada and commence the Company’s largest drilling campaign at our flagship Ana Paula

project, where we see potential to increase the high-grade underground resource.

Looking forward, in Q2, we are focused on delivering an updated technical report to support a planned

increase in production at La Colorada and completing the permitting to allow for the restart of mining at

San Agustin. The Company intends to utilize the cash flow from operations to increase annual gold

production from both producing mines, as well as build Ana Paula with minimal equity dilution.”

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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

Operational and Financial Results1

Key Performance Metrics La Colorada San Agustin El Castillo Total

Ore processed 2 t ore 959,365 ------- ------ 959,365

Gold production 3 oz Au 4,109 4,412 257 8,777

Silver production 3 oz Ag 18,279 8,595 546 27,421

GEO production 4 oz GEO 4,312 4,507 263 9,082

Gold sold oz Au 3,112 4,172 497 7,781

Silver sold oz Ag 12,468 9,936 523 22,927

GEO sold 4 oz GEO 3,250 4,282 502 8,034

Cash Cost 5 US$/GEO sold 1,175-1,275

All-In Sustaining Cost (AISC) 5 US$/GEO sold 1,375-1,475

Cash and cash equivalents US$ 26,900,000

Notes:

1. Results are preliminary in nature and subject to final reconciliation.

2. Production from San Agustin and El Castillo from re-leaching.

3. Metals production before payable deductions.

4. GEO production and GEO sold are based on weighted average sale prices for Q1 2025 of

US$2,875/oz Au and US$31.95/oz Ag.

5. These measures are non-IFRS financial measures.

Non-IFRS Measures. This news release refers to certain financial measures, such as all-in sustaining cost, 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 the understanding of the results of

operations and its financial position. Certain additional disclosures for these 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. Cash costs exclude non- cash depreciation and

depletion and site share-based compensation.

AISC. 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 furthe r 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 definition of sustaining

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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

versus growth capital. Note that in respect of 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., and Mike Gingles, 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 for this news release and have approved the disclosure herein. Mr. Bush

is employed as Chief Operating Officer of the Company, and Mr. Gingles is employed as Vice President of

Corporate Development.

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

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: In Q2, production is expected to decrease due to drawdown of

inventory on the leach pad at San Agustin prior to a planned restart of primary mining activities later in

2025. We remain well on track to meet our production and cost guidance for 2025. This allows us to

expand the drilling program at La Colorada and commence the Company’s largest drilling campaign at our

flagship Ana Paula project, where we see potential to increase the high-grade underground resource.

Looking forward, in Q2 we are focused on delivering an updated technical report to support a planned

increase in production at La Colorada and completing the permitting to allow for the restart of mining at

San Agustin. The Company intends to utilize the cash flow from operations to increase annual gold

production from both producing mines as well as build Ana Paula with minimal equity dilution.

4

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

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

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 res1rves 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

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 assumption s or changes in circumstances or any other events

affecting such statements or information, other than as required by applicable law.