NOT FOR DISTRIBUTION TO U.S. NEWS WIRE SERVICES OR DISSEMINATION IN THE UNITED STATES

Stallion Uranium Corp. (the ‘ Company ‘ or ‘ Stallion ‘ ) ( TSX-V: STUD ; OTCQB: STLNF ; FSE: FE0 ) is pleased to announce that it has closed a second and final tranche of its previously announced non-brokered private placement of units and flow-through units (the ‘ Offering ‘). This closing consisted of 22,305,600 units of the Company (each a ‘ NFT Unit ‘) at a price of $0.20 per NFT Unit for aggregate gross proceeds of $4,461,120 and 30,139,600 flow-through units (each a ‘ FT Unit ‘) at a price of $0.20 per FT Unit for aggregate gross proceeds of $6,027,920.

‘With the successful completion of this $15 million financing, Stallion Uranium is positioned stronger than ever to aggressively advance exploration across our highly prospective assets in the Athabasca Basin,’ stated Stallion’s CEO Matthew Schwab. ‘The overwhelming support from new and existing shareholders is a clear vote of confidence; not only in our team and strategy but in the exciting future of the uranium market as global demand accelerates. We’re entering this next phase with tremendous momentum, and we’re committed to unlocking significant value through disciplined, high-impact exploration this Winter. This is a truly transformational event for Stallion and its shareholders.’

In connection with the Offering, the Company previously closed a first tranche on August 20, 2025. Including the first and second tranches of the Offering, the Company has issued an aggregate of 43,545,400 NFT Units and 31,454,600 FT Units for aggregate gross proceeds of $15,000,000.

Each FT Unit consists of one flow-through common share of the Company as defined in the Income Tax Act (Canada) (a ‘ FT Share ‘) and one FT Share purchase warrant (each a ‘ FT Warrant ‘). Each FT Warrant entities the holder to purchase one additional FT Share in the capital of the Company (a ‘ FT Warrant Share ‘) at a price of $0.26 per FT Warrant Share for a period of 60 months from the closing of the date of issuance.

Each NFT Unit consists of one non-flow-through common share in the capital of the Company (a ‘ NFT Share ‘) and one share purchase warrant (a ‘ NFT Warrant ‘). Each NFT Warrant entitles the holder to purchase one additional non-flow-through common share in the capital of the Company (a ‘ NFT Warrant Share ‘) at a price of $0.26 per NFT Warrant Share for a period of 60 months from the date of issuance.

The NFT Units and FT Units issued pursuant to the Offering are subject to a four-month and one day hold period from the date of issuance under applicable Canadian securities laws.

In connection with the closing of the second tranche of the Offering, the Company paid the following finders fees to eligible arm’s length finders:

• Paid a cash fee of $154,959 to Canaccord Genuity Corp. (‘Canaccord’), $80,075.53 to D-J Sheehan Consulting Limited, and $7,525 to Research Capital Corporation, and $12,250 to Ventum Financial Corp.
• Issued 1,244,425 finder’s units (each a ‘Finder’s Unit’) to Canaccord, 297,144 Finder’s Units to D-J Sheehan Consulting Limited, and 37,625 Finder’s Units to Research Capital Corporation. Each Finder’s Unit consists of one common share and one non-transferrable common share purchase warrant, exercisable to purchase an additional share of the Company at a price of $0.26 per share for a period of 60 months from closing of the Offering;
• Issued 1,630,370 finder’s warrants to Canaccord, each finder’s warrant is exercisable to purchase Finder’s Units of the Company at a price of $0.20 per Finder’s Unit for a period of 60 months from closing of the Offering; and
• Issued 61,250 finder’s warrants to Ventum Financial Corp, each finders warrant is exercisable to acquire one common share in the capital of the Company at an exercise price of $0.26 for a period of 60 months from the closing of he Offering.

All securities issued to finders are subject to a four-month and one day hold period from the date of issuance under applicable Canadian securities laws. All warrants issued to finders are non-transferrable in accordance with the policies of the TSX Venture Exchange (the ‘ TSXV ‘).

Upon completion of the Offering, a new shareholder that holds or controls 20% or more of the Company’s shares (a ‘ Control Person ‘), Mr. Matthew Mason (‘ Mr. Mason ‘), was created though Mr. Mason’s purchase of 15,000,000 FT Units. Mr. Mason’s subscription was subject to obtaining requisite approval from the disinterested shareholders of the Company (as further described below) and the TSXV. In connection with Mr. Mason’s subscription, the Company obtained approval of disinterested shareholders holding or controlling more than 50% of its common shares to approve the creation of the new Control Person by written consent resolution.

The gross proceeds raised from the issuance of the FT Units will be used by the Company to incur exploration expenditures on the Company’s resource claims in the province of Saskatchewan and will constitute ‘Canadian exploration expenses’ as defined in the Income Tax Act (Canada). The net proceeds raised from the issuance of the NFT Units will be used by the Company for exploration and development activities of its Athabasca Basin properties and for working capital and general corporate purposes.

In connection with the Offering, pursuant to an Advisory Agreement with Canaccord, pursuant to which Canaccord provided financial advisory, consulting, and support services in connection with the Offering, the Company paid the advisor a work fee equal to $150,000 (the ‘ Canaccord Advisory Fee ‘) to Canaccord. The Canaccord Advisory Fee was paid through the issuance of 750,000 in units at the terms matching those of the NFT Units in the Offering (each a ‘ Fee Unit ‘).

Furthermore, in connection with the Offering, pursuant to an Advisory Agreement with Taylor K. Housser (‘ Mr. Housse r’), pursuant to which Mr. Housser provided financial advisory, consulting, and support services in connection with the Offering, the Company paid the advisor a work fee equal to $225,000 (the ‘ Housser Advisory Fee ‘ to Mr. Housser). The Housser Advisory Fee was paid through the issuance of 1,125,000 Fee Units.

The Fee Units and the underlying securities issued to Canaccord and Mr. Housser are subject to a four month and one day hold period in accordance with Canadian securities laws.

Mr. Mason, an insider of the Company by virtue of holding more than 10% of the Company’s issued and outstanding voting securities participated in the second tranche of the Offering for 15,000,000 FT Units. Any such participation was be considered a ‘related party transaction’ as defined under Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions (‘ MI 61-101 ‘). Such insider participation is exempt from the formal valuation and minority shareholder approval requirements of MI 61-101, as neither the fair market value of any securities issued to such insiders nor the consideration that will be paid by such persons will exceed 25% of the Company’s market capitalization.

This news release does not constitute an offer to sell or a solicitation of an offer to sell any of the securities in the United States. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the ‘U.S. Securities Act’) or any state securities laws and may not be offered or sold within the United States or to U.S. Persons unless registered under the U.S. Securities Act and applicable state securities laws or an exemption from such registration is available.

About Stallion Uranium Corp.:

Stallion Uranium is working to ‘Fuel the Future with Uranium’ through the exploration of roughly 1,700 sq/km in the Athabasca Basin, home to the largest high-grade uranium deposits in the world. The company, with JV partner Atha Energy holds the largest contiguous project in the Western Athabasca Basin adjacent to multiple high-grade discovery zones.

Our leadership and advisory teams are comprised of uranium and precious metals exploration experts with the capital markets experience and the technical talent for acquiring and exploring early-stage properties. For more information visit stallionuranium.com .

On Behalf of the Board of Stallion Uranium Corp.:

Matthew Schwab
CEO and Director

Corporate Office:
700 – 838 West Hastings Street,
Vancouver, British Columbia,
V6C 0A6

T: 604-551-2360
info@stallionuranium.com

Neither the 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.

This news release contains forward-looking statements and forward-looking information within the meaning of Canadian securities legislation (collectively, ‘forward-looking statements’) that relate to the Company’s current expectations and views of future events. Any statements that express, or involve discussions as to, expectations, beliefs, plans, objectives, assumptions or future events or performance (often, but not always, through the use of words or phrases such as ‘will likely result’, ‘are expected to’, ‘expects’, ‘will continue’, ‘is anticipated’, ‘anticipates’, ‘believes’, ‘estimated’, ‘intends’, ‘plans’, ‘forecast’, ‘projection’, ‘strategy’, ‘objective’ and ‘outlook’) are not historical facts and may be forward-looking statements and may involve estimates, assumptions and uncertainties which could cause actual results or outcomes to differ materially from those expressed in such forward-looking statements. No assurance can be given that these expectations will prove to be correct and such forward-looking statements included in this material change report should not be unduly relied upon. These statements speak only as of the date they are made.

Forward-looking statements are based on a number of assumptions and are subject to a number of risks and uncertainties, many of which are beyond the Company’s control, which could cause actual results and events to differ materially from those that are disclosed in or implied by such forward-looking statements. The Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by law. New factors emerge from time to time, and it is not possible for the Company to predict all of them or assess the impact of each such factor or the extent to which any factor, or combination of factors, may cause results to differ materially from those contained in any forward-looking statement. Any forward-looking statements contained in this presentation are expressly qualified in their entirety by this cautionary statement .

Apollo Silver Corp. (‘ Apollo ‘ or the ‘ Company ‘) (TSX.V:APGO, OTCQB:APGOF, Frankfurt:6ZF0) is pleased to announce that, further to the Company’s news release dated October 3, 2024, it intends to proceed with the consolidation (the ‘ Consolidation ‘) of its issued and outstanding common shares (‘ Shares ‘) on the basis of five (5) pre-Consolidation Shares for every one (1) post-Consolidation Share.

‘ Consolidation of the Company Shares should result in a price environment that allows for immediate marginability, the opportunity of greater blue-sky potential in the US and foreign markets, increased sophisticated investor interest and greater opportunity for inclusion in various indexes and/or index funds. In addition, few of the Company’s peer groups are margin eligible, providing the Company another advantage over our peers,’ commented Ross McElroy, President and CEO.

Prior to the Consolidation the Company has 242,585,395 Shares issued and outstanding. Following the Consolidation, the Company will have approximately 48,517,079 Shares issued and outstanding.

No fractional Shares will be issued under the Consolidation. The holdings of any shareholder who would otherwise be entitled to receive a fractional Share as a result of the Consolidation shall be rounded to the nearest whole number and no cash consideration will be paid in respect of fractional Shares. The Consolidation will not affect any shareholder’s percentage ownership in the Company other than by the minimal effect of the aforementioned elimination of fractional Shares, even though such ownership will be represented by a smaller number of Shares. Instead, the Consolidation will reduce proportionately the number of Shares held by all shareholders.

A letter of transmittal will be mailed to registered shareholders providing instructions with respect to exchanging share certificates representing pre-Consolidation Shares for post-Consolidation Shares. Shareholders who hold their Shares in brokerage accounts or in book-entry form are not required to take any action as they will have their holdings electronically adjusted by the Company’s transfer agent or by their brokerage firms, banks, trust or other nominees. In accordance with the Company’s Articles, the Consolidation will not require shareholder approval and was approved by the Company’s Board of Directors on October 2, 2024.

The Company will issue a subsequent news release to announce the effective date of the Consolidation once approval has been received from the TSX Venture Exchange (‘ TSXV ‘), as the Consolidation remains subject to regulatory approval.

About Apollo Silver Corp.

Apollo is advancing one of the largest undeveloped primary silver projects in the US. The Calico project hosts a large, bulk minable silver deposit with significant barite credits – a critical mineral essential to the US energy and medical sectors. The Company also holds an option on the Cinco de Mayo Project in Chihuahua, Mexico, which is host to a major carbonate replacement (CRD) deposit that is both high-grade and large tonnage. Led by an experienced and award-winning management team, Apollo is well positioned to advance the assets and deliver value through exploration and development.

Please visit www.apollosilver.com for further information.

ON BEHALF OF THE BOARD OF DIRECTORS

Ross McElroy
President and CEO

For further information, please contact:

Email: info@apollosilver.com

Telephone: +1 (604) 428-6128

Neither the 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.

This news release includes ‘forward-looking statements’ and ‘forward-looking information’ within the meaning of Canadian securities legislation. All statements included in this news release, other than statements of historical fact, are forward-looking statements including, without limitation the completion of the Consolidation; the receipt of approval for the Consolidation by the TSXV; and the expected benefits of the Share-Consolidation, including potential for a trading price environment that may allow for immediate marginability, an advantage over competition, and greater blue-sky potential in the U.S. and foreign markets, increased interest from sophisticated investors, and the potential for inclusion in various indexes. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as ‘anticipate’, ‘believe’, ‘plan’, ‘estimate’, ‘expect’, ‘potential’, ‘target’, ‘budget’ and ‘intend’ and statements that an event or result ‘may’, ‘will’, ‘should’, ‘could’ or ‘might’ occur or be achieved and other similar expressions and includes the negatives thereof.

Forward-looking statements are based on the reasonable assumptions, estimates, analysis, and opinions of the management of the Company made in light of its experience and its perception of trends, current conditions and expected developments, as well as other factors that management of the Company believes to be relevant and reasonable in the circumstances at the date that such statements are made. Forward-looking information is based on reasonable assumptions that have been made by the Company as at the date of such information and is subject to known and unknown risks, uncertainties and other factors that may have caused actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking information, including but not limited to: risks associated with mineral exploration and development; metal and mineral prices; availability of capital; accuracy of the Company’s projections and estimates; realization of mineral resource estimates, interest and exchange rates; competition; stock price fluctuations; availability of drilling equipment and access; actual results of current exploration activities; government regulation; political or economic developments; environmental risks; insurance risks; capital expenditures; operating or technical difficulties in connection with development activities; personnel relations; and changes in Project parameters as plans continue to be refined. Forward-looking statements are based on assumptions management believes to be reasonable, including but not limited to the price of silver, gold and Ba; the demand for silver, gold and Ba; the ability to carry on exploration and development activities; the timely receipt of any required approvals; the ability to obtain qualified personnel, equipment and services in a timely and cost-efficient manner; the ability to operate in a safe, efficient and effective matter; and the regulatory framework regarding environmental matters, and such other assumptions and factors as set out herein. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking statements will prove to be accurate and actual results, and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward looking information contained herein, except in accordance with applicable securities laws. The forward-looking information contained herein is presented for the purpose of assisting investors in understanding the Company’s expected financial and operational performance and the Company’s plans and objectives and may not be appropriate for other purposes. The Company does not undertake to update any forward-looking information, except in accordance with applicable securities laws .

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 all-in sustaining costs (‘AISC’) of $1,541 for Q2 2025
• The Company is on track to achieve its annual sales guidance of 31,000 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

Heliostar Metals Ltd. (TSXV: HSTR,OTC:HSTXF) (OTCQX: HSTXF) (FSE: 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 perform 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 operating 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 2025 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 develop 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.’

Second Quarter 2025 Quarterly Conference Call

Heliostar will host a quarterly conference call on Thursday, September 4, 2025, at 11:00 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 ounces (‘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 Q2 2025. The combined YTD cash cost (see ‘Non-IFRS Measures’) is $1,257 per GEO.

Total AISC of $1,541 per GEO sold in Q2 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 latter half of the year as residual leaching at San Agustin declines 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 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 an 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:

1. Non-IFRS measure. Refer to the ‘Non-IFRS Measures’ section of this news release.

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 were $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:

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.

San Agustin Mine

Operating results for Q2 2025 were as follows:

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 YTD 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:

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.

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 site 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 the 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 del 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 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. 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 definition 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 for this news release and have 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.

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 release, 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, expectations, 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 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 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 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 assumptions or changes in circumstances or any other events affecting such statements or information, other than as required by applicable law.

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