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ST. AUGUSTINE ANNOUNCES THE APPOINTMENT OF BMO CAPITAL MARKETS AND MACQUARIE CAPITAL AS FINANCIAL ADVISORS FOR ADVANCEMENT OF THE KINGKING COPPER-GOLD PROJECT

Manila, Philippines - November 24, 2025, - St. Augustine Gold and Copper Limited (TSX:SAU) ("St. Augustine" or the "Company") announces the appointment of BMO Capital Markets and Macquarie Capital as financial advisors in relation to financing and strategic alternatives for the advancement of the Kingking Copper-Gold project (the "Kingking Project") in the Philippines.

Following the release of the Kingking Project N.I. 43-101 Pre-Feasibility Study report on July 31, 2025 and the recent engagement of Stantec and IMC to complete a Definitive Feasibility Study, the Board of Directors has approved the engagement of BMO Capital Markets and Macquarie Capital to support the Company's objective to advance the Kingking Project towards production.

As previously disclosed, the Kingking Pre-Feasibility Study demonstrates highly robust economics, including a US$4.2 billion NPV (7%), 34.2% IRR, and 1.9 years payback (at US$2,150 /oz Au and US$4.30 /lb Cu), supporting the Board of Directors' recommendation and actions to move towards project development.

The Company will pursue a financing strategy to support the project development schedule targeting first production of concentrate in 2030, with the support of BMO Capital Markets and Macquarie Capital.

The engagement of the advisors marks a new milestone in the Company's commitment to progress the Kingking Project towards development in accordance with global industry standards and regulatory requirements.

"Appointing these experienced advisors and consultants reflects our Board's commitment to advancing the Kingking Project responsibly, transparently, and in line with best practices," said Mr. Paraskevas, Executive Director, "We look forward to working with BMO Capital Markets, Macquarie Capital, Stantec, and IMC to unlock the value of this strategic copper-gold asset for our stakeholders."

The Kingking Copper-Gold Project is one of the largest undeveloped copper-gold deposits in Southeast Asia and has been declared a project of national significance under Executive Order No. 79 (Philippines). The Project is being advanced in compliance with both Philippine mining regulations and international reporting standards.

About St. Augustine

St. Augustine (SAU) 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

+632 77288491

E: info@kingking.ph