Strosberg Wingfield Sasso LLP and Groia and Company Professional Corporation Announce Leave Granted in Lundin Mining Securities Class Action

On November 28, 2025, the Supreme Court of Canada affirmed the granting of leave to proceed pursuant to section 138.8 of the Ontario Securities Act to commence a secondary market securities action under section 138.3 of the Securities Act against Lundin Mining Corp (“Lundin”) (TSX: LUN) and certain of its officers and directors.

The case alleges that Lundin failed to disclose an evacuation and shutdown due to pit wall instability, and a subsequent rock slide, at the company’s Candelaria Mine in Chile in October 2017. Once these alleged “material changes” were revealed, the price of Lundin securities dropped significantly, causing substantial economic harm to persons who purchased or otherwise acquired securities of Lundin during the period from October 25, 2017 to November 29, 2017.

The proposed class proceeding will now return to the Ontario Superior Court of Justice for certification under the Ontario Class Proceedings Act, 1992.

Strosberg Wingfield Sasso LLP and Groia and Company Professional Corporation are counsel for the proposed class.

A copy of the Supreme Court of Canada’s judgment can be found at https://class-action.swslitigation.com/class-actions/lundin-mining/.

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