Lexpert Ranked Law Firm

Crawley MacKewn Brush LLP is a leading corporate and securities litigation boutique based in Toronto. We are best known for our expertise in representing clients who participate in the capital markets and financial services industry. Our named partners have been ranked nationally among the best of their peers.

Our dedicated team of lawyers has successfully represented clients in some of the most significant and high profile securities law cases in Canada. Our practice includes investigations and enforcement proceedings brought by the Ontario Securities Commission (OSC), the Investment Industry Regulatory Organization of Canada (IIROC) and the Mutual Fund Dealers Association of Canada (MFDA). We also have significant experience with cross-border investigations involving the Securities Exchange Commission (SEC) and other US regulators and law enforcement agencies. Our familiarity with the Canadian securities regulators allows us to deliver practical and current advice to resolve issues in a constantly changing regulatory environment.

Our civil litigation practice has a focus on securities class action defence and corporate litigation. We act for companies, directors, officers, securities dealers, advisors, investment funds, fund managers, traders and other capital market participants in a wide range of securities class actions brought in provinces across the country. Our lawyers have extensive experience with the litigation and resolution of corporate disputes, including oppression claims, fair value applications, corporate governance and accounting issues and corporate investigations. We are frequently retained as litigation counsel to work with corporate law firms on contested shareholder meetings, takeover bids and transactions that require court approval through plans of arrangement or otherwise.

All of the lawyers at Crawley MacKewn Brush have an active commercial litigation practice. We have extensive experience with professional negligence claims involving securities industry professionals and accountants. We have litigated significant contract disputes in the courts and through a range of arbitration processes in Canada, through JAMS in the US and the Rules of the ICC. We have experience resolving a wide range of issues that arise for our clients in the business environment, including employment disputes, defamation claims and tax litigation matters.

The lawyers at Crawley MacKewn Brush are litigators first and foremost. We focus on achieving the best outcome for our clients, no matter how challenging the circumstances. We endeavour to apply and instill in all our lawyers best practices in trial advocacy and dispute resolution in order to provide professional and skilled representation that both serves and reflects well on our clients.


Alistair Crawley (416) 217-0806  [email protected]
Melissa MacKewn  (416) 217-0840 [email protected]
Robert Brush (416) 217-0822 [email protected]
Kate McGrann  (416) 217-0850  [email protected]
Clarke Tedesco (416) 217-0884 [email protected]
Michael Byers  (416) 217-0886 [email protected]


179 John St, Suite 800
Toronto, ON, Canada, M5T 1X4
Phone: (416) 217-0110
Fax: (416) 217-0220

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Mentioned in Lexpert Publications

  • Lawyers applying to tribunals will find themselves at the mercy of onerous procedural demands. There’s an effort, however, to streamline things.
Crawley MacKewn Brush LLP is a Lexpert-Ranked Firm in the following practice areas
Litigation - Corporate Commercial Toronto, Ontario Repeatedly Recommended
Litigation - Securities Toronto, Ontario Most Frequently Recommended
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