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Altiplano Updates Status on Late Filing of Financial Statements

Financials Regulatory & Compliance

Altiplano Metals Inc.

250 Southridge NW, Suite 300

Edmonton, AB Canada T6H 4M9

Altiplano Updates Status on Late Filing of Financial Statements

EDMONTON AB, August 21, 2025 – Altiplano Metals Inc. (TSXV: APN) (WKN: A2JNFG) (“Altiplano” or the

“Company”) further to the Company’s news release s dated July 24, 2025, and August 8 , 2025, the

Company continues to work towards the filing of its annual audited financial statements fand MD&A for

the fiscal year ended March 31, 2025 (the “Required Filings”). The delay is due to the Company’s and its

auditors’ joint assessment of the time required to complete the remaining audit procedures and the

auditors’ review process, as well as the delayed receipt of financial information from Altiplano’s Chilean

subsidiaries. A ll required documentation has now been received from Altiplano’s Chilean subsidiaries ,

and partner review is expected to commence early next week. According to the auditors, approximately

95% of the audit process has been completed. The pace of the audit has been slightly delayed due to staff

holidays. The auditors have submitted additional queries to Altiplano, which the company has promptly

addressed or is in the process of responding to. The Required Filings are anticipated to be completed on

or before August 29, 2025.

The Required Filings were due to be filed by July 29, 2025. In connection with the anticipated delays in

making the Required Filings, the Company made an application for a Management Cease Trade Order

(“MCTO”) under National Policy 12 -203 Management Cease Trade Orders (“NP 12-203”) to the Alberta

Securities Commission, as principal regulator for the Company, and the MCTO was issued on July 30, 2025.

The MCTO restricts all trading by the Company’s CEO and CFO in securities of the Company, whether direct

or indirect. The issuance of the MCTO will not affect the ability of persons who are not directors, officers

or insiders of the Company to trade their securities. The MCTO will remain in effect until the Requ ired

Filings are filed or until it is revoked or varied.

It is expected that the interim financial statements , and management’s discussion and analysis for the

period ended June 30, 2025, will be filed within the required timeframe.

Both the Company and its auditors are working diligently towards the completion and filing of the

Required Filings, and the Company will provide additional updates.

The Company confirms that it intends to satisfy the provisions of the alternative information guidelines

described in NP 12 -203 by issuing bi -weekly default status reports in the form of a news release until it

meets the Required Filings requirement. The Company has not taken any steps towards any insolvency

proceeding and the Company has no material information relating to its affairs that has not been generally

disclosed.

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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 state -of-the-art operating 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.

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. www.metalsgroup.com

ON BEHALF OF THE BOARD

/s/ “John Williamson”

Chairman

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.

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 continued

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 .