Vancouver, BC – September 12, 2025 – Golden Goliath Resources Ltd. (TSX.V: GNG) is pleased to announce that it has entered into a Services Agreement with Petko Resources Pty. Ltd. (“Petko”). The agreement provides that Petko will seek gold exploration and/or production opportunities for the Company in the south-eastern desert of Upper Egypt on an exclusive basis. Petko shall maintain an office in Egypt for use by the Company and shall have technical, administrative and government relations teams to facilitate due diligence and negotiation on behalf of the Company. Petko shall be paid $50,000 per month and a finder’s fee for any acquisition. The Agreement may be terminated upon 30 days notice. The Agreement is considered a related-party transaction pursuant to Multilateral Instrument 61-101, as the Company’s CEO, Maki Petkovski, is a director, officer and control person of Petko. The Agreement is exempt from the need to obtain minority shareholder approval and a formal valuation as required by and under applicable provisions of MI 61-101.

About Golden Goliath Resources Ltd.

Golden Goliath Resources Ltd. is a junior exploration company based in Vancouver, B.C., focused on the exploration and development of precious metal properties in mining-friendly jurisdictions. The Company is actively exploring its projects in Ontario’s Red Lake District and other high-potential areas in Canada.

To find out more about Golden Goliath visit our website at www.goldengoliath.com

FOR MORE INFORMATION CONTACT:

Golden Goliath Resources Ltd. J. Paul Sorbara, M.Sc., Geology

Chairman

Phone: +1(604) 682-2950 Email: jps@goldengoliath.com

Cautionary and Forward-Looking Statements

This news release contains forward‐looking statements and forward‐looking information within the meaning of applicable securities laws. These statements relate to future events or future performance. All statements other than statements of historical fact may be forward‐looking statements or information. Forward‐looking statements and information are often, but not always, identified by the use of words such as “appear”, “seek”, “anticipate”, “plan”, “continue”, “estimate”, “approximate”, “expect”, “may”, “will”, “project”, “predict”, “potential”, “targeting”, “intend”, “could”, “might”, “should”, “believe”, “would” and similar expressions.

Forward-looking statements and information are provided for the purpose of providing information about the current expectations and plans of management of the Company relating to the future. Readers are cautioned that reliance on such statements and information may not be appropriate for other purposes, such as making investment decisions. Since forward‐looking statements and information address future events and conditions, by their very nature they involve inherent risks and uncertainties. Actual results could differ materially from those currently anticipated due to a number of factors and risks. These include, but are not limited to, the expected timing and terms of the private placement, use of proceeds, anticipated work program, required approvals in connection with the work program and the ability to obtain such approvals. Accordingly, readers should not place undue reliance on the forward‐looking statements, timelines and information contained in this news release. Readers are cautioned that the foregoing list of factors is not exhaustive.

The forward‐looking statements and information contained in this news release are made as of the date of this news release and no undertaking is given to update publicly or revise any forward‐looking statements or information, whether as a result of new information, future events or otherwise, unless so required by applicable securities laws or the TSXV. The forward-looking statements or information contained in this news release are expressly qualified by this cautionary statement. Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) accepts responsibility for the adequacy or accuracy of this release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein.