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Supreme Court Greenlights Investor's Case Over Mining Firm

November 28, 2025
Updated November 28, 2025 at 12:57 p.m.
3 min read
CityNews Toronto
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Supreme Court of Canada building, representing legal decision impact

Supreme Court of Canada building, representing legal decision impact

The Supreme Court of Canada has ruled that investor Dov Markowich can proceed with his lawsuit against Lundin Mining Corp. over their failure to immediately disclose a rock slide at their Chilean mine in 2017. This incident, which was initially hidden, led to a significant drop in the company's stock price on the Toronto Stock Exchange when finally revealed. Markowich, who bought shares after the rock slide but before the public update, claims the company violated disclosure obligations under the Ontario Securities Act. The Ontario Superior Court of Justice initially dismissed the case, but the Ontario Court of Appeal overturned this decision, allowing it to advance to the Supreme Court.

"This ruling emphasizes the critical role of transparency in maintaining investor trust and the potential legal consequences of failing to meet disclosure obligations."

Legal Perspective: This perspective highlights the legal responsibilities of companies under securities law and the protections available to investors.

Key Takeaways

Supreme Court allows investor lawsuit against Lundin Mining.

Case involves securities disclosure under Ontario law.

Precedent highlights importance of corporate transparency.

What This Means for Ontario Residents

This case highlights the importance of timely and transparent corporate disclosures, especially for investors in Ontario. When companies fail to immediately report significant operational setbacks, it can have a profound impact on shareholder value and investor trust. The Supreme Court's decision underscores the rights of investors to take legal action when they believe a company has violated disclosure regulations. This case could set a precedent for similar actions, reinforcing the need for companies to maintain transparency to avoid litigation. If you're dealing with a similar issue, consulting with litigation lawyers can help you explore your legal options and protect your investments.

What You Should Do

1

Review your investment portfolio for potential disclosure issues. Urgent

Identify any investments that may have been affected by undisclosed information.

2

Gather evidence of communications from the company. Urgent

Document all correspondence that may indicate non-disclosure or misleading information.

3

Consult with a litigation lawyer experienced in securities law. Urgent

Get professional advice on whether your case merits legal action.

4

Stay informed about updates to the Ontario Securities Act.

Understanding changes can help protect your investments in the future.

5

Monitor the financial performance of companies you invest in.

Regularly check for any discrepancies or unexpected changes in stock prices.

Your Rights and Options

As an investor in Ontario, you have the right to expect full and timely disclosure of material events from companies you invest in. If you suspect that a company has withheld important information affecting your investments, you may have grounds to pursue legal action under the Ontario Securities Act. Consulting with experienced litigation lawyers can provide guidance on whether your case merits legal action and how to proceed.

Common Questions Answered

How UL Lawyers Can Help

We understand how unsettling it can be when your investments are affected by corporate misconduct or oversight. At UL Lawyers, our team is well-versed in handling complex litigation cases involving securities and corporate disclosures. We can help you assess your situation, explore your legal options, and guide you through the litigation process with expertise and care. If you're concerned about your rights as an investor, reach out to us for a free consultation to understand how we can assist you.

If you're concerned about how this decision affects your investments, reach out for a free consultation to explore your options.

Important Legal Disclaimer

This article is for informational purposes only and does not constitute legal advice. Please consult a qualified attorney for advice regarding your specific situation.