(all dollar amounts are expressed in U.S. dollars)

MEDELLIN, Colombia--(BUSINESS WIRE)--Aug. 27, 2025-- Mineros S.A. (TSX:MSA, MINEROS:CB) (“Mineros” or the “Company”), a leading gold producer in Latin America, announces, following a commitment made on July 18, 2025 to update the market, that it will commence an offer to repurchase its common shares (an Oferta de Readquisicion de Acciones, or “ORA”) through the facilities of the Colombian Stock Exchange starting on Monday, September 1, 2025, and ending on September 5, 2025. The maximum aggregate value of the common shares to be purchased under the ORA will be $12.0 million. The final number of shares purchased under the ORA will be determined based on the number of common shares tendered to the ORA. In the event that common shares having a value exceeding $12.0 million are tendered to the ORA, common shares will be purchased from the tendering shareholders on a pro-rata basis.

The ORA is subject to applicable market conditions. Further details regarding the ORA, including the final aggregate value and number of common shares repurchased, will be announced as they become available.

The ORA will not be made through the facilities of the Toronto Stock Exchange. Mineros has determined that the ORA is not subject to regulation as an “issuer bid” under applicable Canadian securities laws.

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 Company's intention to repurchase its shares, and the maximum size, timing and outcome of the ORA.

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 as a result of new information, future events or results or otherwise, except as and to the extent required by applicable securities laws.

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For further information, please contact:

Ann Wilkinson
Vice President, Investor Relations
+1 (647) 496-3011
Ann.Wilkinson@Mineros.com.co

Juan Obando
Director, Investor Relations
(+57) 574 266 5757
Juan.Obando@Mineros.com.co

Source: Mineros S.A.