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APN.V ·

Altiplano Intersects New 400 m Mining Level and Updates Cu-Au-Fe Concentrate Sales

Mine Development & Operations Exploration Programs

Altiplano Metals Inc.

250 Southridge NW, Suite 300

Edmonton, AB

Canada

T6H 4M9

Altiplano Intersects New 400 m Mining Level and Updates Cu-Au-Fe Concentrate Sales

EDMONTON, AB, October 16, 2025 – Altiplano Metals Inc . (TSXV: APN) (WKN: A2JNFG)

(“Altiplano” or the “Company”) is pleased to announce operational updates at the Santa Beatriz

copper-gold-iron (Cu -Au-Fe) mine and processing updates at the El Peñón Processing plant,

located approximately 30 kilometers south of La Serena, Chile.

Highlights:

• During the month of September, the Company extracted 2,270 tonnes of copper -gold-

iron mineralized from the 425 m level along north -east and southwest mining drifts

(Figure 1.)

• Shipments to the El Peñón processing plant to support the production of copper/gold and

iron concentrates was 1,910 tonnes. At the end of September, 360 tonnes remain on site

with shipment to the plant expected in October.

• The development in the 400 m tunnel, accessed through the 414 m opening, reached the

400 m level in early October. A total of 54.32 metres has been developed to date.

o Access along this level and development of the lower levels will be further

reviewed to ensure grade control is maximized

• Massive sulphides were observed in the vein (chalcopyrite, pyrite), as well as magnetite

and secondary minerals such as apatite and actinolite (Figure 2).

• During the reporting period July to September 2025, the Company generated US$256,717

(CS360,600*) from the sale of 128.7 tonnes of copper/gold concentrate representing

US$222,600, and 483 tonnes of iron representing US$34,117 (Figure 3.)

*Canadian dollar equivalent is fro reference and as determined by the October 14 BOC noon rate of 1.4046

President and CEO Alastair McIntyre comments: “Reaching the lower level of the mine provides us the

opportunity to access material with higher grades and begin mining on multiple faces. This improves our

output at the mine and increase the efficiencies at the plant as higher volumes with better grade improves

concentrate production. We are also pleased to see revenues improve from the previous quarter results.”

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Figure 1. Santa Beatriz Mine Section

The decision to develop the historical Santa Beatriz mine is not based on a feasibility study of mineral reserves demonstrating economic and

technical viability and there is increased uncertainty of economic and technical risks of failure associated with any potential production decision

Figure 2. Santa Beatriz 400 m Level Figure 3. Santa Beatriz 425 m Level

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Figure 3. El Peñón Processing and Sales

Board of Directors

The Company further announces Mr. James Farley has retired from his role as Director. The B oard of

Directors express their sincere appreciation for Mr. Farley’s contributions to the audit and technical

committees and his leadership during his tenure . The Company wishes him every success in his future

endeavours.

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

Qualified Person

The technical content of this news release has been reviewed and approved by John Williamson, P.Geol.,

a Qualified Person as defined by National Instrument 43-101. Mr. Williamson is a Chairman and Director

of Altiplano Metals Inc. and is not independent of the Company.

ON BEHALF OF THE BOARD

/s/ "John Williamson"

Chairman

For further information, please contact:

Alastair McIntyre, CEO

[email protected]

Tel: (416) 434 3799

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.

Raw material

processed (t)

Concentrate Cu

Production (t)

Concentrate

sales (t)

Concentrate Sales

CU/AU (USD$)

Concentrate Sales

Cu Grade

Concentrate Fe/Iron

Production (t)

Fe/Iron Sales

(t)

Fe/Iron Sales

($)

January 2025 1,710.0 41.3 55.1 95,035 27.72% 540.0

February 2025 1,693.9 38.4 46.5 103,843 25.64% 201.0 804.7 41,038

March 2025 1,987.3 58.0 45.9 96,945 25.45% 155.6 1,627.0 82,978

Q4 2025 5,391.2 137.7 147.4 295,822 26.18% 896.6 2,431.7 124,016

April 2025 1,412.5 32.9 38.5 52,072 18.09% - 151.9 7,744

May 2025 2,043.0 61.0 68.8 126,363 24.00% 294.8 334.0 17,033

June 2025 1,463.1 38.5 15.91% 18.5 409.3 20,876

Q1 2026 4,918.5 132.4 107.3 178,434 20.18% 313.3 895.2 45,654

July 2025 1,086.7 42.3 48.7 70,902 15.91% 115.3 104.2 5,314

August 2025 578.6 22.0 38.0 61,967 22.00% 68.1 165.4 7,924

September 2025 1,852.6 43.0 42.0 89,731 26.00% 299.9 409.4 20,879

Q2 2026 3,518.0 107.3 128.7 222,599 21.20% 483.3 679.0 34,117

13,828 377 383 696,855 22.52% 1,693 4,006 203,787

Provisional Grade

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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 private production mid 2010’s with unknown production records . This material was

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

underground sampling, surface drilling and related activities to further explore, develop and potentially mine Santa

Beatriz. The decision to develop the project and extract material for 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 results or developments may differ materially from

those in the forward -looking statements. Factors that c ould 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 perf ormance 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 .