Securities Litigation
Our securities team specializes in the complex, high stakes field of securities regulatory defence and litigation. With extensive experience acting for companies, boards, directors, and shareholders in all facets of this field, we are able to provide strategic and legal advice that allows our clients to navigate difficult and stressful situations with confidence.
We have a proven track record as counsel for plaintiffs and defendants in all manner of securities litigation cases, ranging from securities class actions to common law and statutory misrepresentation claims to contested mergers and acquisitions.
We also regularly act for corporations, regulated professionals, and other individuals who are required to testify or respond to regulatory investigations and proceedings brought by securities commissions, the Canadian Investment Regulatory Organization (formerly, the Investment Industry Regulatory Organization of Canada and the Mutual Fund Dealers Association of Canada), and the Financial Services Regulatory Authority of Ontario.
In addition, we conduct internal investigations on behalf of public issuers and advise on the best approach for disclosing potential breaches of securities and securities-adjacent laws to the appropriate regulator.
Our lawyers’ experience in litigating securities proceedings includes the following representative matters:
Representing corporate and individual clients in the context of claims alleging primary and secondary market breaches of the Securities Act (Ontario)
Representing companies seeking leave of the court to pursue contested plans of arrangement
Representing clients in investigations and proceedings under the Securities Act and before the Capital Markets Tribunal
Part of a team acting for the Receiver in a complex and significant receivership of an investment management firm, put into receivership pursuant to the Ontario Securities Act, which includes representing the receivership entity in ongoing proceedings before the Capital Markets Tribunal
Representing whistleblowers under the Ontario Securities Commission’s Whistleblower Program
Advising companies responding to takeover attempts and actions taken by activist shareholders where the issues have become litigious
Acting as external and in-house counsel for financial institutions defending against securities class actions arising out of alleged misrepresentations in the primary and secondary market
Representing financial institutions defending against class actions arising out of allegations of unlawful conspiracies to fix prices in the foreign exchange market and the gold market
R v. Beattie, 2017 ONSC 7686: Successfully defended a client charged with making a false prospectus under s. 400 of the Criminal Code
Goodwood Inc. v. Cathy Forest Products Corp., 2013 ONSC 4242: Successfully recovered shareholders’ costs incurred as a result of a s. 144 court-ordered shareholders’ meeting (Canada Business Corporations Act)
Dugal v. Manulife Financial Corporation, 2013 ONSC 4083, 2014 ONSC 1347: Defended former Manulife Chief Financial Officer in class action alleging Manulife’s risk management practices were inadequate
Falconbridge Limited, Re, 2006 ONSEC 21: Acted for Falconbridge, the subject of a hostile takeover
Katokakis v. William R. Waters Ltd., 2005 CanLII 4090 (ONCA): Acted for public company, Financial Models Company Inc., which was the subject of a takeover
News, accolades & recognition
Ross Nasseri is delighted to announce that Eric Block, Justin Nasseri, Erin Pleet, and Eric Brousseau have been recognized in the Lexpert Special Edition: Litigation 2025 among the top-performing litigators in Canada
Congratulations to our partners, Eric Block, Justin Nasseri, Erin Pleet, and Eric Brousseau for...
Ross Nasseri has been ranked as a leading firm in five practice areas in the 2026 edition of Best Law Firms in Canada
Ross Nasseri has been ranked as a leading firm in five practice areas in the 2026 edition of Best...
Ross Nasseri LLP Is Globe and Mail’s Canada’s Best Law Firm In Dispute Resolution (Litigation, Arbitration & Investigation) 2026
Ross Nasseri LLP is grateful to be recognized as the most recommended law firm in Dispute...
Ross Nasseri and Five Partners Recognized In Chambers Canada 2026 Guide
Ross Nasseri is delighted to be recognized as a leading litigation firm in the Chambers Canada...
Ross Nasseri’s partners recognized in the 2025 Canadian Legal Lexpert Directory
We are delighted to announce that all eight of Ross Nasseri’s partners are recognized in the 2025...
Justin Nasseri, Eric Block, and Erin Pleet recognized as Leading 500 Cross-Border Lawyers in 2024
Congratulations to three RN LLP partners, Justin Nasseri, Eric Block and Erin Pleet who have been...
