Redefining Corporate Disclosure Of Material Change

The Potential Impact of the Supreme Court of Canada's Decision in Lundin Mining Corporation v. Markowich

As the Supreme Court of Canada (the SCC) prepares to deliver its decision in Lundin Mining Corporation v Dov Markowich (Markowich), the legal community and corporate stakeholders are closely watching for implications that may redefine the concept of "material change" within Canadian securities law. This case presents a pivotal moment that could reshape how companies disclose information to shareholders, particularly in the mining and oil and gas sectors, where operational risks and environmental concerns are ever present and unavoidable.

Background of the Case

Dov Markowich, a minority shareholder of Lundin Mining Corporation (Lundin), brought an action against Lundin for alleged unlawful delay in Lundin's disclosure of a pit wall instability and a rockslide at its open pit copper mine in Chile. The rockslide restricted access to part of the mine, which