Osler’s litigators have extensive experience representing public and private clients of all sizes in corporate governance, mergers and acquisitions and securities matters before the courts and provincial securities commissions.
We have been at the forefront of the development of legal principles governing a number of critical aspects of modern corporate law. As a result, we are intimately familiar with the potential risks involved in pursuing a course of action and can advise on the best approach to dealing with a litigious matter.
We work closely with our colleagues in related groups to provide comprehensive representation of our clients in Canada and cross-border. Our lawyers have advised and represented clients in corporate governance and securities litigation matters related to:
- Corporate finance proceedings commenced under a variety of business statutes including the federal and provincial Business Corporations Acts and the provincial Securities Acts;
- Securities class actions based on alleged misrepresentations contained in prospectuses, financial statements and other public disclosure documents;
- Directors’ duties in hostile and friendly take-over bids;
- Defending corporations in U.S.-style “strike” suits;
- Directors’ personal liability for conduct undertaken on behalf of the corporation;
- Shareholders’ rights;
- Oppression remedy;
- Dissent remedy and appraisal;
- Derivative actions by shareholders;
- Disputes in mergers and acquisitions;
- “Poison pill” disputes.
Key Contacts
Partner, Disputes, Toronto
Partner, Disputes, Toronto
Partner, Disputes, Toronto
Partner, Disputes, Vancouver
Latest Insights
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Blog June 8, 2026
Solo International decision: a detailed account of pump-and-dump scheme, but sparse legal analysis
The recent Québec Financial Markets Tribunal decision offers limited justification of administrative penalties imposed.
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Osler Update June 2, 2026
The Solo International case: the Québec Financial Markets Tribunal sanctions a transnational pump-and-dump scheme, but leaves key questions unanswered
A closer look at the Solo International decision which highlights concerns about the justification for the penalties imposed.
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Report December 4, 2025
Shareholder activism in Canada: trends and outlook for coming years
The shareholder activism trends that shaped corporate governance in Canada in 2025.
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Osler Update December 1, 2025
From pit wall to policy: what Lundin means for public company disclosure
The SCC’s recent decision provides guidance on the distinction between material facts and material changes under Ontario securities law.
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Stay up to date with our latest insights
SubscribeAwards and Recognition
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Chambers Canada: Canada’s Leading Lawyers for Business: Recognized in Litigation: Securities (Ontario) (Band 1)
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The Canadian Legal Lexpert Directory: Recognized in Litigation – Securities (Toronto, Ontario)
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Benchmark Litigation Canada Awards: Securities, Firm of the Year, Shortlisted (2019)
In the Media
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Osler News May 4, 2026
Osler Disputes team recognized in 2026 Benchmark Litigation Canada Guide
Osler is proud to announce that 34 of our lawyers have been recognized in the 2026 edition of the Benchmark Litigation Canada Guide, Benchmark’s...
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Osler News February 13, 2026
Larry Ritchie appointed to FSRA’s Board of Directors
Ontario has appointed Larry Ritchie as a member of the Financial Services Regulatory Authority of Ontario’s Board of Directors.
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Osler News November 20, 2025
24 Osler lawyers recognized in Lexpert Special Edition: Litigation 2025
This prestigious publication showcases leading litigators across Canada.
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Osler News September 25, 2025
Osler receives top rankings in 2026 edition of Chambers Canada
Osler is proud to have once again been ranked as a leading law firm in the 2026 edition of Chambers Canada.
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