Lundin Mining Corporation Ontario British Columbia

Normal Course Issuer Bid

Under the Company's shareholder distribution policy, the Company is committed to allocating up to US$150 million in annual share buybacks through the NCIB program. So far during 2025, Lundin Mining has acquired 12,629,000 common shares at a cost of approximately US$104 million.

About Lundin Mining

Lundin Mining is a diversified base metals mining company with operations or projects in Argentina, Brazil, Chile, and the United States of America, primarily producing copper, gold and nickel.

The information in this release is subject to the disclosure requirements of Lundin Mining under the Swedish Financial Instruments Trading Act. The information was submitted for publication, through the agency of the contact persons set out below on August 29, 2025 at 16:00 Pacific Time.

For further information, please contact: Stephen Williams, Vice President, Investor Relations: +1 604 806 3074, Robert Eriksson, Investor Relations Sweden: +46 8 440 54 50

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