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Altiplano Provides Operational Update at El Peñón and Santa Beatriz

Mine Development & Operations

Altiplano Metals Inc.

250 Southridge NW, Suite 300

Edmonton, AB

Canada

T6H 4M9

Altiplano Provides Operational Update at El Peñón and Santa Beatriz

EDMONTON, AB, May 22nd, 2025 - Altiplano Metals Inc. (TSXV: APN) (WKN: A2JNFG) (“Altiplano” or the

“Company”) is pleased to provide operational updates at the Company’s historic Santa Beatriz

copper/gold mine and the El Peñón processing facility located approximately 30 kilometers south of La

Serena, Chile.

Highlights:

• Total mineralized bulk sample material produced from Santa Beatriz and processed at the El

Peñón plant between January and March 2025 represented 1,259.40 tonnes grading at 1.38% Cu.

• An additional 987.3 tonnes with an estimated grade of 1.25% Cu have been shipped and

stockpiled at the plant site for processing in May.

• Gold grades are expected after final settlement of the concentrate sales.

• A total of 5,391 tonnes of Cu -Au mineralized material was processed at the plant during the Q4

2025 (Jan -Mar) period generating 142.5 tonnes of Cu-Au concentrate with an approximate

average grade of 24.5% copper and 1.6 g/t of gold.

• This production generated US$315,515 in revenue (C$453,585).

• Additionally, 2,432 tonnes of iron was sold during the period generating revenue of US $124,016

(C$178,284).

• A blend of third-party material, Santa Beatriz bulk sample s and Farellon stockpiles were used to

supply the plant.

• Mine development is under review at Santa Beatriz where 3,000 tonnes /month can be initially

produced within 6 weeks of decline development and improving up to 5,000 tonnes/month within

6 months. Third party material can be used to supplement processing capacity as development

ramps up.

*Final sales are reported at quarter end based on final assays and monthly average copper/gold prices. USD/CAD comparison is based on

the March 31st BOC noon rate of 1.4376. C$ revenue is used for illustrative purposes

President and CEO Alastair McIntyre comments:

“We are pleased with the initial bulk sample results obtained at Santa Beatriz and combined with the

recent drilling results, encourages us to continue the development opportunity. We are also encouraged

with t he plant produc ing quality Cu-Au and Fe concentrate s to support monthly revenue growth.

Mineralized m aterial supplied from local third -party sources will continue to supplement our supply

requirements as we develop production opportunities from our operations in the coming months.”

Altiplano Metals Inc.

250 Southridge NW, Suite 300

Edmonton, AB

Canada

T6H 4M9

Table 1. Material Processed, Concentrates Produced and Sold

Month

Processed

(Tonnes)

Cu Con

sales

(Tonnes)

Con Sales

Cu/Au

Iron

Production

(Tonnes)

Iron

Sales

(Tonnes)

Iron

Sales

Jan-25 1,710.0 50.2 $114,728 540.0

Feb-25 1,693.9 46.5 $103,843 201.0 804.7 $41,038

Mar-25 1,987.3 45.9 $96,945 155.6 1,627.0 $82,978

Q4 2025 5,391.2 142.5 $315,515 896.6 2,431.7 $124,016

Table 2. Santa Beatriz's Bulk Production and Processing

Month Mined (Tonnes) Cu Grade (%)

Jan-25 0 0

Feb-25 586 1.27

Mar-25 674 1.38

Q4 2025 1,260 1.32

*Apr-25 197 1.25

*May-25 790.3 1.25

Total Produced 2,246.10 TBD

*April and May grades are estimated.

Altiplano has generated over C$23.8 million from the recovery and sale (after processing costs) of more

than 8.2 million pounds of copper (Dec 2018 to Mar 2025). Cash has been re -invested into acquisition,

exploration, new equipment, drilling, expanding underground development and production , and the

completion of the El Peñón copper-gold-iron processing facility located 30 km from La Serena, Chile.

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 Metals Inc.

250 Southridge NW, Suite 300

Edmonton, AB

Canada

T6H 4M9

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"

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. A qualified person has not done

sufficient work to classify any historical estimates as current mineral resources or mineral reserves and the issuer is

not treating any historical information or estimates as current mineral resources or mineral reserves . The Santa

Beatriz mine was previously in production mid 2010’s with little known production records . This material was

processed and sold locally to a private processing facilit y. Altiplano is relying upon limited past production records,

underground sampling and related activities to further explore and potentially develop Santa Beatriz. The decision to

develop the project and extract material for potential processing is not based on a feasibility study of mineral reserves

demonstrating economic and technical viability and there is increased uncertainty and economic and technical risks

of failure associated with any future potential production decision. 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 resul ts 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, cont inuity 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 .