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SAU.TO ·

St. Augustine Announces Acquisition of Remaining Interest in Kingking Copper GOLD Project

Mergers & Acquisitions

ST. AUGUSTINE ANNOUNCES ACQUISITION OF REMAINING

INTEREST IN KINGKING COPPER GOLD PROJECT

Singapore – May 19, 2025 – St. Augustine Gold and Copper Limited (TSX:SAU) (“ St. Augustine” or

the “ Company”) is pleased to announce that it has entered into an agreement with its co-venture

partner National Development Corporation (“Nadecor”) to acquire the balance of the KingKing Copper

Gold Project (the “ Project”) located in the Philippines. The Company will issue a convertible note to

Nadecor in the amount of $9,018,750, convertible into 185,000,000 million Company shares at a

deemed price of $0.004875. In return St. Augustine will acquire all the outstanding of shares of

Nadecor’s subsidiary Kingking Mining Limited, which holds the exploration and development rights to

the Project.

The note bears no interest and is structured to be assignable by Nadecor, including to its shareholders,

at its discretion. Conversion must take place within 6 months.

Closing of the placement is expected to occur on or about May 26, 2025 and is subject to the approval

of the Toronto Stock Exchange as well as other customary closing conditions.

The parties feel that it will be easier to develop the Project with this transfer of Nadecor’s interest into

one entity.

About St. Augustine

St. Augustine (SAU.T) is a TSX-listed mining company focused on the development of the King-king

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

atwww.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 nor 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:

Lenna Mae Leopoldo

Investor and Public Relations Contact

ST. AUGUSTINE CORPORATE

HEADQUARTERS

T: +6382 225 0884 No.21, Greenwood Lane, E:

[email protected] Singapore, 286949