Ms. Ann Wilkinson reports

MINEROS S.A. TO REPURCHASE SHARES IN COLOMBIA COMMENCING MAY 11, 2026

Mineros SA will commence an offer to repurchase its common shares through the facilities of the Colombian Stock Exchange for five business days starting today, Monday, May 11, 2026, and ending on May 15, 2026. The maximum aggregate value of the common shares to be repurchased under the ORA will be $15.0-million.

The ORA was approved by the general shareholders assembly of Mineros at its ordinary meeting held on March 27, 2026, which: (i) approved a share repurchase program for an aggregate value of up to $80.0-million, to be executed through one or more repurchase offers within a maximum period of three years from March 27, 2026; and (ii) authorized the board of directors to regulate the share repurchase program and define and approve its specific terms and conditions.

The repurchase price for each common share will be determined through a book-building mechanism, pursuant to which eligible shareholders will indicate the price at which they are willing to sell a specified number of shares, or their willingness to accept the repurchase price, during the acceptance period. The repurchase price and the maximum amount to be repurchased will be determined by the company based on the structure of the order book and prevailing market conditions at the time of adjudication. Payment will be made on the third business day following the date of adjudication.

The final number of shares repurchased under the ORA will be determined based on the number of common shares tendered to the ORA. In the event that common shares tendered below or at the determined repurchase price have a value exceeding $15.0-million, common shares will be repurchased 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 SA

Mineros is a leading Latin American gold mining company headquartered in Medellin, 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 La Pepa project in Chile and the exploration project in Tolima near Cajamarca, Colombia.

With more than 50 years of operating history, Mineros maintains a long-standing 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.

We seek Safe Harbor.