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APN.V ·

Altiplano Announces Extension of Offering

Financings

Altiplano Metals Inc.

250 Southridge NW, Suite 300

Edmonton, AB

Canada

T6H 4M9

Altiplano Announces Extension of Offering

EDMONTON, AB – May 15th, 2025 – Altiplano Metals Inc. (TSXV: APN) (WKN: A2JNFG) (“Altiplano” or the

“Company”) is pleased to announce that the TSX Venture Exchange has granted the Company a 30-day

closing extension with respect to its Offering initially announced on February 12, 2025. With the extension

of the final date for this Offering , it is anticipated that a second tranche will close on or before June 9,

2025.

Altiplano closed a first tranche of its Offering on March 31, 2025, which consisted of sell of 12,785,000

Units (as described in detail in the Company’s news r elease dated March 31, 2025) for gross proceeds of

$639,250. The net proceeds of the Offering will be used for working capital to support the concentrate

production cycle at the El Peñón processing facility in Chile; development costs, including a diamond drill

program, at Santa Beatriz to outline a short-term operations plan, and fund general admin while reviewing

additional projects for potential acquisition or alternative mill supply.

For additional information on our Offering, please refer to Altiplano’s news releases dated February 12 ,

2025, and March 31, 2025.

About Altiplano

Altiplano Metals is a growing gold, silver, and copper company focused on the Americas. The Company

has a diversified portfolio of assets that include exploration properties, a developing copper/gold/iron

mine and a n industry leading copper/gold and iron processing facility . Altiplano is focused on creating

long-term stakeholder value through developing safe and sustainable production, reinvesting into

exploration and development, and pursuing acquisition opportunities to provide scalable upside

opportunities. Management has a substantial record of success in capitalizing on opportunity, overcoming

challenges and building shareholder value.

www.metalsgroup.com

Altiplano is part of the Metals Group of Companies, led by a dynamic

group of resource sector professionals with a long record of success

in evaluating and advancing mining projects from exploration

through to production, attracting capital, and overcoming adversity

to deliver exceptional shareholder value.

ON BEHALF OF THE BOARD

/s/ "John Williamson"

Chair

For further information, please contact:

Alastair McIntyre, CEO

[email protected]

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.

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This release includes certain statements that may be deemed "forward -looking statements". All statements in this

release, other than statements of historical facts, that address exploration drilling, exploitation activities and events

or developments that the Company expects are forward- looking statements. Although the Company believes the

expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements

are not guarantees of future performance and actual results or developments may differ materially from those in the

forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking

statements include market prices, exploitation and exploration successes, continuity of mineralization, uncertainties

related to the ability to obtain necessary permits, licenses and title and delays due to third party opposition, changes

in government policies regarding mining and natural resource exploration and exploitation, and co ntinued

availability of capital and financing, and general economic, market or business conditions. Investors are cautioned

that any such statements are not guarantees of future performance and actual results or developments may differ

materially from those projected in the forward-looking statements. For more information on the Company, investors

should review the Company's continuous disclosure filings that are available at www.sedarplus.ca.