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VANCOUVER, BC, October 9, 2025 – TheNewswire - Heritage Mining Ltd. (CSE: HML FRA:Y66) (“Heritage ” or the “Company ”) is pleased announce preliminary results from its Fall 2025 diamond drill program at Zone 3 extension, Drayton Black Lake project (“Project ”). The first hole has intersected the Mega Quartz Vein Structure ~185m along strike. Two additional holes have been completed and are currently being processed, they intersected  a major northeast-southwest striking linear magnetic feature that is within the granite.  The first scout hole (HML25-016) intersected the Mega Quartz Vein Structure at approximately ~15m in core length (True width unknown).  

2025 Fall Exploration Program - Zone 3 Extension Drill Highlights (HML25-016, Figures 1-8):

• Drilling extended a broad zone of granite hosted quartz vein mineralization ~ 185m 

• Vein width is ~15.51m in core length (from 87.49.00m to 103.00m), true width unknown 

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Figure 1:Mineralization Photo HML25-016 Box 23 101.24m-101.50m

• Locally visible sulphides, including molybdenite and pyrite, occurring with alteration comprising silica, hematite and K-feldspar 

• 15.51m of sulfide bearing quartz similar to gold mineralization intervals from HML25-013 press released September 9, 2025 and highlighted below: 

  • 0.98 g/t Au over 5.00m from 101.00m  

  • 1.11 g/t Au over 11.09m from 115.91m Including: 4g/t Au over 2m from 125m  

• Drill core is being logged, split and sent for assay as soon as possible 

2025 Fall Exploration Plans – Zone 3 Extension:

• Soil/Till Orientation Survey over Zone 3 Extension Area – Near Completion  

• Follow-up Soil/Till Survey – success based on Orientation Survey (Figure 1) expected Q4 2025, weather permitting 

• Outcrop/Vein stripping permit received above HML25-013 – In Progress  

• Initiate a structural Study of the Mega-Quartz Vein System   

• Diamond Drilling Q4, 2025/Q1 2026 (Figure 3) – Near Completion  

“We are extremely pleased to have extended such a broad vein zone in the first scout hole at Zone 3 Extension prospect Fall 2025 exploration program.  Heritage’s geologists have observed additional intense sulfide bearing quartz similar to that associated with gold mineralization from HML25-013, 185m away.  This is an excellent start to Heritage’s Fall scout drill program. We also look forward to communicating additional drill results, soil orientation program and stripping results at the Zone 3 Extension Target in due course. Commented Peter Schloo, President, CEO and Director of Heritage Mining.

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Figure 7: Plan map view showing the vein zone in HML025-016 (red line segment); line of section for Figure 3 is shown with a dashed white line.

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Figure 8: Cross-Section view showing completed holes to test the vein zone in HML025-016. The drill hole is arranged approximately perpendicular to the global trend of the linear magnetic feature shown on the map in Figure 2.

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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