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Altiplano Metals Inc.

250 Southridge NW, Suite 300

Edmonton, AB

Canada

T6H 4M9

Altiplano Minerals SpA Settles Legal Proceedings in Chile

EDMONTON AB, October 1st, 2026 - Altiplano Metals Inc. (TSXV: APN) (WKN: A2JNFG) ("Altiplano" or the "Company") provides an update on the legal action initiated against Altiplano Minerals SpA.

Regarding case C-9351-2026 (Telecomunicaciones Robinson Alejandro Vergara Alvarez EIRL v. Altiplano Minerals Chile SpA) both parties have agreed on a settlement. A joint writ was filed with the 2nd Civil Court of Santiago on September 25th to withdraw the forced liquidation. As result of this action, the Company confirms the petition scheduled for hearing on September 30th was withdrawn. Altiplano Minerals Chile SpA accepted this withdrawal without opposition and there will be no further action on this case.

The Company also announces that on September 29th it has filed an appeal before the Court of Appeals of Santiago against the forced liquidation ruling initiated By Andes Core Mining SpA against Andes Metals SpA. The appeal is based upon the argument that the liquidation request did not fulfill all the requirements provided under local bankruptcy law. This appeal does not suspend the liquidation process. A ruling on the appeal should be expected within a period of 4 to 6 months approximately.

ON BEHALF OF THE BOARD

/s/ "Alastair McIntyre"

President, CEO and Director

For further information, please contact:

Alastair McIntyre, CEO

alastairm@apnmetals.com

Tel: (416) 434 3799

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Information: This news release contains forward-looking information within the meaning of applicable Canadian securities laws, including statements regarding proceedings in respect of certain of the Company's subsidiaries in Chile and, the timing and potential outcome of these court proceedings and related matters. Forward-looking information is based on assumptions and is subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied. Readers are cautioned not to place undue reliance on forward-looking information. The Company undertakes no obligation to update or revise such information except as required by applicable securities laws.