Drill Bit Turning: Heritage Mining Granted Permit and Commences Drilling at Melba's Highly Prospective Target Area

VANCOUVER - December 16, 2025 - Heritage Mining Ltd. (CSE: HML FRA:Y66) ("Heritage" or the "Company") is pleased to announce that further to its news release dated October 15, 2025, the Company has received its exploration permit for its planned diamond drilling program December 15, 2025. The Company is also pleased to announce drilling has commenced at the Melba Project (Figure 1) boarding Kirkland Lake Discoveries, a junior exploration Company (TSX-V: KLDC) with recent success in 2025.

"We've moved faster than most companies at our stage regarding the Melba Project (in house drilling and core shack operations) and we believe the market is still catching up to the scale of progress we've made. The real value-creation comes from what we do next-executing the near-term milestones we've lined up and continuing to de-risk the project step-by-step. If we deliver the results we're targeting, we see a clear path to building meaningful long-term shareholder value." Commented Peter Schloo, President, CEO and Director.

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Figure 1: Property Map Melba

Melba Mine Exploration Plan and Historical Highlights (October 15, 2025):

• Diamond Drilling Q4 2025/Q1 2026 designed to confirm multiple high-grade historical results, 26 Diamond Drill holes totalling ~1,780m:

  • Historical Highlights (See figure 2)

    • Up to 23.27 g/t Au Over 4.5m and 6.59 g/t Au Over 12.87m near Surface

    • Multiple occurrences of visible gold in multiple drill holes and surface workings

    • Rock Pile, 2012 Bulk Sample results average grade of 3.99g/t, ore pile estimated to be 2000 short tonnes or 230.90 oz Au estimated (Nordex Explosives Ltd. Report June 25, 2012), Figure 1

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Figure 2: Melba Historical Highlight Compilation from Assessment reports and Historic Maps, Historic calculations have been re-calculated to g/t Au from 35$ gold, the Company used Troy Ounce

Melba Property

The Melba Mine is located in Northeastern Ontario, Canada Southeast of Matheson Ontario (Figure One) approximately seven kilometers east off the Highway 11, on the section of highway travelling from Kirkland Lake to Cochrane. The Melba Mine is located in northeastern Ontario close to the Ontario and Quebec border. It's fortunate the location of the Melba Property lies within the central hub of over 100 years of mining activities, including active mining operations within the Abitibi Greenstone Belt. The claim package includes single cell mining claims covering 1,522.70 hectares and one mining lease.

Qualified Person

Mitchell Lavery P. Geo, Strategic Advisor for the Company, serves as a qualified person as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Projects and has reviewed the scientific and technical information in this news release, approving the disclosure herein.

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. The Company is well capitalized, with a tight capital structure.

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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