Crawley MacKewn Brush LLP is one of Canada’s leading litigation boutiques, focused on complex corporate and commercial disputes and securities litigation. Based in Toronto, the firm is home to the largest dedicated securities litigation team in the country and is consistently recognized by Benchmark Litigation, Chambers Canada, Lexpert and Best Lawyers as a leading disputes practice.
The firm represents public and private companies, officers and directors, senior executives, investment dealers, advisors, investment funds, and other capital markets participants in a broad range of litigation and regulatory matters. Crawley MacKewn Brush LLP has an established reputation as a market leader in securities litigation. The firm acts in primary and secondary market liability claims, investment loss litigation and complex regulatory investigations and enforcement proceedings before the Ontario Securities Commission and other provincial securities commissions, the Canadian Investment Regulatory Organization and the Financial Services Regulatory Authority of Ontario. We have significant experience with cross-border investigations Securities and Exchange Commission and other U.S. regulators and law enforcement agencies.
The firm is equally recognized for its strength in corporate and commercial litigation. Its lawyers act for plaintiffs and defendants in disputes including those arising from mergers and acquisitions, shareholder and governance conflicts, breaches of contract, director and officer liability claims, oppression remedy proceedings, business torts, fraud and cyber-fraud investigations, wrongful dismissal matters, professional negligence claims and corporate governance and accounting issues.
Known for its strategic judgment and courtroom strength, Crawley MacKewn Brush LLP delivers practical, results-focused advocacy in complex and high-stakes matters. Clients value the firm’s subject-matter expertise, litigation experience and ability to guide them through challenging business disputes.
Updated March 2026
