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Bvc: Mineros TSX :MSA OTCQX: Mnsaf Mineros.com.co Mineros S.a. Appoints New Vice President of Legal Affairs to Drive Its Regional Growth Strategy

Management Changes

BVC: MINEROS TSX :MSA OTCQX: MNSAF MINEROS.COM.CO

MINEROS S.A. APPOINTS NEW VICE PRESIDENT OF LEGAL AFFAIRS TO DRIVE ITS REGIONAL

GROWTH STRATEGY

Medellin, Colombia – March 17, 2026 – Mineros S.A. (TSX:MSA, OTCQX:MNSAF, BVC:MINEROS)

(“Mineros” or the “ Company”) has appointed Martha Socha Peñaloza as Vice President of Legal Affairs,

effective immediately. This appointment strengthens Mineros’ legal and corporate governance

capabilities at a key moment in its multijurisdictional growth agenda, which includes the development of

the Porvenir Project in Nicaragua, exploration at La Pepa in Chile, and potential corporate transactions

across the Americas.

“Martha brings exactly the profile Mineros needs at this stage of growth. Her extensive experience in

multijurisdictional mining law, mergers and acquisitions, community relations, and corporate governance

makes her an outstanding addition to our leadership team. We are confident that her leadership will be

crucial in executing our “IDEAS en Acción” strategy and generating sustainable value for our

shareholders,” said Daniel Henao, President and Chief Executive Officer of Mineros.

About Martha Socha Peñaloza

Dr. Socha is a senior legal executive with more than 18 years of experience in leadership roles in legal and

corporate affairs within the mining and consumer goods sectors in Colombia and Latin America, with

exposure to markets such as Canada and the United States. Her background combines strong legal and

compliance expertise with a proven track record in stakeholder engagement, corporate governance, and

sustainability, in highly regulated and multijurisdictional operating environments.

Before joining Mineros, she served as Regional Director of Corporate Affairs and Community Relations for

Latin America at Softys (CMPC Group) and previously as Chief Legal Officer at B2Gold Colombia and

Minera Cobre de Colombia. Her experience includes the legal structuring of operations, multijurisdictional

acquisitions, crisis management, and building relationships with communities, authorities, and other key

stakeholders.

She holds a Law degree from Universidad de los Andes, an LL.M. from the University of Texas at Austin,

and specializations in Financial Law (Universidad Externado) and Environmental Law (Universidad del

Rosario). She is currently pursuing a Sustainability certification at MIT Professional Education.

ABOUT MINEROS S.A.

Mineros is a leading Latin American gold mining company headquartered in Medellín, Colombia. The

Company operates a diversified portfolio of assets in Colombia and Nicaragua and maintains a pipeline

of development and exploration projects across the region, including the La Pepa Project in Chile.

BVC: MINEROS TSX :MSA OTCQX: MNSAF 2

With more than 50 years of operating history, Mineros maintains a longstanding focus on safety,

sustainability, and disciplined capital allocation. Its common shares are listed on the Toronto Stock

Exchange (MSA) and the Colombian Stock Exchange (MINEROS) and trade on the OTCQX® Best Market

under the symbol MNSAF.

Election of Directors – Electoral Quotient System

The Company has received an exemption from the individual and majority voting requirements

applicable to TSX-listed issuers. Compliance with such requirements would conflict with Colombian laws

and regulations, which require directors to be elected from a slate of nominees under an electoral

quotient system. Additional details are available in the Company’s most recent Annual Information

Form, accessible on the Company’s website at www.mineros.com.co and on SEDAR+ at

www.sedarplus.com.

For Further Information, Please Contact:

Ann Wilkinson

Vice President, Investor Relations

+1 (647) 496-3011

[email protected]

Juan Obando

Director, Investor Relations

+57 (4) 266-5757

[email protected]