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Golden Goliath Resources Appoints Jonathan Cole as Chief Geologist Veteran Geologist with 40+ Years of Global Experience Joins Leadership Team

Vancouver, BC July 10th , 2025 Golden Goliath Resources Ltd. (TSX.V: GNG) is pleased to announce the appointment of Mr. Jonathan Cole as Chief Geologist, effective immediately. Mr. Cole brings over four decades of international exploration and development experience to the Company and will play a key role in advancing Golden Goliath's strategic initiatives.

Mr. Cole, a British-born geologist with a B.Sc. (Hons) in Geology, began his career at the Les Mines Selbaie Copper/Gold Mine with BP Minerals in Canada. Since then, he has worked across the globe, contributing to the discovery, delineation, and early-stage development of numerous resource projects. His experience spans the Middle East and North Africa (MENA), Australasia, the United Kingdom, Papua New Guinea, and South America.

Mr. Cole has held senior technical, commercial, and managerial roles with notable organizations including BP, Ampolex Ltd, and Oil Search Ltd. His leadership and deep geological insight will significantly support Golden Goliath's mission to develop high-value mineral assets and enhance shareholder value.

"We are delighted to welcome Jon to the Golden Goliath team," said Mr. Maki Petkovski, CEO of Golden Goliath Resources. "His wealth of experience and global perspective will be instrumental in leading our new technical team as we advance exploration across our portfolio."

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

Corporate Office Canada Suite 618 - 688 West Hastings Street, Vancouver, BC V6B-1P1, Canada 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.

Corporate Office Canada Suite 618 - 688 West Hastings Street, Vancouver, BC V6B-1P1, Canada Email: jps@goldengoliath.com