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ST. AUGUSTINE ANNOUNCES THE APPOINTMENT OF A NEW BOARD MEMBER

Davao City, Philippines - November 18, 2025, - St. Augustine Gold and Copper Limited (TSX:SAU) ("St. Augustine" or the "Company") is pleased to announce the appointment of Atty. Teodulo "Butch" San Juan as Independent Director effective 17 November 2025.

Atty. San Juan is a seasoned legal practitioner with extensive experience in corporate governance, natural resources law, regulatory compliance, and public policy. He has served in various senior roles in both government and the private sector, bringing with him significant expertise relevant to the Company's mining and development activities.

The Board welcomes Atty. San Juan and is confident that his insights will contribute meaningfully to the Company's ongoing development initiatives and its commitment to responsible and transparent governance.

About St. Augustine

St. Augustine (SAU.T) is a TSX-listed mining company focused on the development of the Kingking Copper-Gold Project. The Project is one of the largest undeveloped copper-gold deposits in the world and is listed as a top three-priority mining project by the Philippine government.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This announcement includes certain "forward-looking statements" within the meaning of Canadian securities legislation. All statements, other than statements of historical fact included herein are forward looking statements. Forward-looking statements involve various risks and uncertainties and are based on certain factors and assumptions. While we consider these assumptions to be reasonable based on currently available information, they may prove to be incorrect. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Forward-looking information is also subject to certain factors, including risks and uncertainties, that could cause actual results to differ materially from the Company's current expectations, including changes in market conditions, governmental or regulatory developments and general economic conditions. Other risks and uncertainties related to the Company are disclosed under the heading "Risk Factors" in the Company's Annual Information Form dated March 31, 2025 and filed with Canadian securities regulatory authorities on the SEDAR+ website at www.sedarplus.ca. Forward-looking information contained in this announcement is based on our current estimates, expectations and projections, which we believe are reasonable as of the current date. You should not place undue importance on forward-looking information and should not rely on this information as of any other date. While we may elect to, we are under no obligation and do not undertake to update this information at any particular time except as required by applicable securities law.

For more information:

Nicolaos Paraskevas

Investor and Public Relations Contact

ST. AUGUSTINE CORPORATE

HEADQUARTERS

+632 77288491 5F Pryce Tower. J.P. Laurel E:info@kingking.ph Davao City