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Transatlantic Mining Corp. | Suite 400 | 837 West Hastings Street | Vancouver | Canada V6C 3N6 T 604-630 7296 | F 604-357 1139| www.transatlanticminingcorp.com

Transatlantic Issues 8,500,000 options

Vancouver, B.C. September 23, 2025 - Transatlantic Mining Corp. (the "Company") (TCO:TSX.V) announces that it has issued 8,500,000 options to its officers, directors, and consultants.

Each option will be exercisable into one common share of the Company at a price of $0.15 per share for a period of ten years from date of issuance, expiring on September 19, 2035, in accordance with the Company's stock option plan.

The options are subject to the policies of the TSX Venture Exchange and the Company's stock option plan.

About Transatlantic Mining Corp.

Transatlantic Mining (TSX-V: TCO) is an emerging precious and base metal explorer. The Company has a focus on converting projects into mines within stable mining jurisdictions. The Company currently holds property interests including an 80% Joint Venture position on the Monitor Copper-Gold project in Montana-Idaho (USA) and 100% of the Golden Jubilee Gold Project with its associated mining rights. The Company also has an extended lease, right to mine, and purchase arrangement for the Miller Gold Mine in Montana, moving towards 100% ownership by way of a payment royalty.

Cautionary Statement Regarding Forward-Looking Statements

This news release contains "forward-looking statements" within the meaning of Canadian securities legislation. These forward-looking statements include, but are not limited to, statements regarding the Company's future exploration plans, geophysical programs, and the potential for mineralization. Forward-looking statements are subject to known and unknown risks, uncertainties, and other factors that may cause the actual results, level of activity, performance, or achievements of the Company to be materially different from those expressed or implied by such forward-looking statements. These factors include, but are not limited to, risks associated with the exploration and development of mineral properties, the Company's ability to obtain necessary permits, and the availability of financing. Readers are cautioned not to place undue reliance on forward-looking statements. The Company undertakes no obligation to update or revise any forward-looking statements, except as required by law.

For further information, please contact: Bernie Sostak: bsostak@transatlanticminingcorp.com , +61 (0) 439 904 044,

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.