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VANCOUVER, BC – TheNewswire - September 8, 2025 – Heritage Mining Ltd. (CSE: HML FRA: Y66) (“Heritage ” or the “Company ”) is pleased to announce marketing efforts for H2 2025. Highlights of these efforts include:

Peter Schloo, the Company’s President and Chief Executive Officer, will be presenting with MI3, the Company’s marketing consultant, at investor meetings and lunches in Abitibi and Val-d’Or, Quebec, on September 16 and 17, 2025.

Peter Schloo will also be attending the Munich Mining Conference to be held in Munich, Germany on October 3 and 4, 2025.

Please feel free to reach out to the Company at Peter’s contact information below to schedule a meeting with Peter during the investor meetings and lunches in Abitibi and Val-d’Or or the Munich Mining Conference.

The Company has engaged Hillside Consulting and Media Inc. (“Hillside ”), a British Columbia-based firm, to assist in the Company’s ongoing marketing and investor relations efforts. Hillside will provide a comprehensive suite of services to enhance the Company's public presence and drive investor engagement. Hillside will provide a digital outreach program to update the market on the Company's gold properties, exploration activities, and overall value proposition. The engagement will commence on the date hereof and remain in effect for up to four weeks. The Company will pay Hillside a total of one-hundred thousand dollars, plus applicable GST for these services. The Company continues to pursue all available avenues to grow its investor base and execute on its business growth plans and long-term exploration strategies.

ABOUT HERITAGE MINING LTD.

The Company is a Canadian mineral exploration company advancing its two high grade gold-silver-copper projects in Northwestern Ontario. The Drayton-Black Lake and the Contact Bay projects are located near Sioux Lookout in the underexplored Eagle-Wabigoon-Manitou Greenstone Belt . Both projects benefit from a wealth of historic data, excellent site access and logistical support from the local community.

For further information, please contact:

Heritage Mining Ltd.

Peter Schloo, CPA, CA, CFA

President, CEO and Director

Phone: (905) 505-0918

Email: peter@heritagemining.ca

FORWARD-LOOKING STATEMENTS

This news release contains certain statements that constitute forward looking information within the meaning of applicable securities laws. These statements relate to future events of the Company. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always, using words or phrases such as “seek”, “anticipate”, “plan”, “continue”, “estimate”, “expect”, “forecast”, “may”, “will”, “project”, “predict”, “potential”, “targeting”, “intend”, “could”, “might”, “should”, “believe”, “outlook” and similar expressions are not statements of historical fact and may be forward looking information. All statements, other than statements of historical fact, included herein are forward-looking statements.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance, or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such risks include, among others, the inherent risk of the mining industry; adverse economic and market developments; the risk that the Company will not be successful in completing additional acquisitions; risks relating to the estimation of mineral resources; the possibility that the Company’s estimated burn rate may be higher than anticipated; risks of unexpected cost increases; risks of labour shortages; risks relating to exploration and development activities; risks relating to future prices of mineral resources; risks related to work site accidents, risks related to geological uncertainties and variations; risks related to government and community support of the Company’s projects; risks related to global pandemics and other risks related to the mining industry. The Company believes that the expectations reflected in such forward-looking information are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward‐looking information should not be unduly relied upon. These statements speak only as of the date of this news release. The Company does not intend, and does not assume any obligation, to update any forward‐looking information except as required by law.

This document does not constitute an offer to sell, or a solicitation of an offer to buy, securities of the Company in Canada, the United States, or any other jurisdiction. Any such offer to sell or solicitation of an offer to buy the securities described herein will be made only pursuant to subscription documentation between the Company and prospective purchasers. Any such offering will be made in reliance upon exemptions from the prospectus and registration requirements under applicable securities laws, pursuant to a subscription agreement to be entered into by the Company and prospective investors.

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