Mineros Profiles Initiatives to Increase Production at its Nechí Alluvial Property

MEDELLIN, Colombia--(BUSINESS WIRE)--Mineros S.A. (TSX:MSA, MINEROS:CB) (“Mineros” or the “Company”), a leading gold producer in Latin America, is pleased to announce the ramp up of its newest mobile mining and recovery plant at its Nechí Alluvial Property in Colombia. The new mobile plant (the “Aurora Plant”) was constructed over the course of 2024 and was completed in the third quarter of 2025 at a cost of US$6.5 million. Ramp up of the Aurora Plant has been carried out over July and August of 2025. It is anticipated that the Aurora Plant will achieve full processing capacity of 10,000 tonnes per day (5,000 m³) early in the fourth quarter of 2025.

The Aurora Plant demonstrates Mineros’ focused use of technology, where high-precision GPS and control systems ensure that the mobile mining system operates within centimeters of its planned mining pattern, and pressure and flow recovery systems are continually optimized to maximize recoveries. The plant is a floating recovery system, measuring 61 meters long, 12 meters wide, and weight of approximately 1,000 tonnes. The Aurora Plant includes sorting systems that separate material by size, gravimetric concentration, and dewatering processes, without use of any chemicals or reagents.

In addition, as part of Company’s debottlenecking initiatives, the Nechí Alluvial mobile scavenger plant project is well advanced with phase I to start up late in the fourth quarter of 2025, and phase II is expected to start up early in the second quarter of 2026. Once both phases are complete, the mobile scavenger system will increase recoveries by up to 8% for each mobile mining and recovery plant to which it is attached.

David Londoño, President and Chief Executive Officer of Mineros stated, "The Aurora Plant and the scavenger project demonstrate Mineros’ commitment to low-cost, low-risk projects that deliver very high returns. Moreover, these types of projects support our corporate principles tied to sustainability, efficiency and community benefit. This initiative is the result of more than a decade of dedicated work, constant innovation and a deep commitment to a mining model that generates shared prosperity.”

ABOUT MINEROS S.A.

Mineros is a Latin American gold mining company headquartered in Medellin, Colombia. The Company has a diversified asset base, with mines in Colombia and Nicaragua and a pipeline of development and exploration projects throughout the region including the La Pepa Project in Chile.

The board of directors and management of Mineros have extensive experience in mining, corporate development, finance and sustainability. Mineros has a long track record of maximizing shareholder value and delivering solid annual dividends. For almost 50 years Mineros has operated with a focus on safety and sustainability at all its operations.

Mineros’ common shares are listed on the Toronto Stock Exchange under the symbol “MSA”, and on the Colombia Stock Exchange under the symbol “MINEROS”.

This press release is neither an offer to sell nor a solicitation of an offer to buy any securities in the United States or elsewhere.

Election of Directors – Electoral Quotient System

The Company has been granted an exemption from the individual voting and majority voting requirements applicable to listed issuers under Toronto Stock Exchange policies, on grounds that compliance with such requirements would constitute a breach of Colombian laws and regulations which require the directors to be elected on the basis of a slate of nominees proposed for election pursuant to an electoral quotient system. For further information, please see the Company’s most recent annual information form, available on the Company’s website at https://www.mineros.com.co/ and from SEDAR+ at www.sedarplus.com.

FORWARD-LOOKING STATEMENTS

This news release contains “forward looking information” within the meaning of applicable Canadian securities laws. Forward looking information includes statements that use forward looking terminology such as “may”, “could”, “would”, “will”, “should”, “intend”, “target”, “plan”, “expect”, “budget”, “estimate”, “forecast”, “schedule”, “anticipate”, “believe”, “continue”, “potential”, “view” or the negative or grammatical variation thereof or other variations thereof or comparable terminology. Such forward looking information includes, without limitation, statements with respect to the efficiency, cost savings and production increases of the Company's Aurora Plant.

Forward looking information is based upon estimates and assumptions of management in light of management’s experience and perception of trends, current conditions and expected developments, as well as other factors that management believes to be relevant and reasonable in the circumstances, as of the date of this news release. While the Company considers these assumptions to be reasonable, the assumptions are inherently subject to significant business, social, economic, political, regulatory, competitive and other risks and uncertainties, contingencies and other factors that could cause actual actions, events, conditions, results, performance or achievements to be materially different from those projected in the forward-looking information. Many assumptions are based on factors and events that are not within the control of the Company and there is no assurance they will prove to be correct.

For further information of these and other risk factors, please see the “Risk Factors” section of the Company’s annual information form dated March 31, 2025, available on SEDAR+ at www.sedarplus.com.

The Company cautions that the foregoing lists of important assumptions and factors are not exhaustive. Other events or circumstances could cause actual results to differ materially from those estimated or projected and expressed in, or implied by, the forward-looking information contained herein. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information.

Forward-looking information contained herein is made as of the date of this news release and the Company disclaims any obligation to update or revise any forward-looking information, whether because of new information, future events or results or otherwise, except as and to the extent required by applicable securities laws.