John A. Fabello

John A. Fabello

Toronto: 416.865.8228
Fax 416.865.7380


BA, 1988
University of Toronto
LLB, 1992
University of Alberta
LLM (Securities), pending Osgoode Hall Law School

Bar Admissions

Ontario, 1994


John is a senior partner in Torys’ securities litigation and class action practices and is co-head of the firm’s securities defence practice. John focuses on all aspects of securities litigation and regulatory matters, as well as general corporate and commercial litigation. John represents clients across Canada before securities and other financial regulators, and the courts. John’s practice includes conducting internal investigations and advising financial services firms regarding the quality and sufficiency of their regulatory compliance programs. John has acted as an instructor for in-house broker and investment banker continuing education programs and was seconded for over a year to one of Canada’s largest broker-dealers to manage major class action litigation and related securities regulatory matters. John has acted as lead counsel successfully defending financial institutions in Canada’s largest securities class actions, including in Sino Forest and CannTrust. John is a frequent speaker and lecturer on securities litigation, and has been recognized as a leading lawyer in Canada in the areas of professional liability and securities litigation by Chambers & Partners, Best Lawyers and Lexpert (including the Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada), among others.

John was retained to act as an expert on Ontario securities law and provided an opinion that was filed in the British Columbia court for use in a constitutional challenge to a provision of the British Columbia Securities Act.

Representative Work

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Chambers Canada—Leading lawyer in litigation: securities, Ontario (2017-2020)

Benchmark Canada: The Definitive Guide to Canada’s Leading Litigation Firms and Attorneys—Litigation Star (Class Actions, Securities, Commercial) (2012-2021)

Best Lawyers in Canada—Leading lawyer in securities law (2006-2021)

Lexpert/American Lawyer’s Guide to the Leading 500 Lawyers in Canada—Leading lawyer in securities litigation (2014-2021)

The Canadian Legal Lexpert Directory—Leading lawyer in securities litigation (2011-2021); directors’ and officers’ liability litigation (2013-2021); and class actions (2014-2021)

Lexpert’s Guide to the Leading US/Canada Cross-border Litigation Lawyers in Canada—Leading lawyer in securities litigation (2013)

Real Time News’ LawDay—Leading lawyer in professional liability (2009)

Lexpert’s Guide to the U.S./Canada Cross-border Litigation Lawyers in Canada—One of Canada’s litigation lawyers to watch (2007)



Professional Involvement

Before joining Torys, John created and led a national broker-dealer litigation practice at another major Canadian law firm.

He was seconded for over a year to one of Canada’s largest securities broker-dealers to manage major class action litigation and related regulatory matters.

Memberships and Affiliations

John is a member of the Ontario Bar Association Class Actions Law Executive and the International Association of Defense Counsel. He is also an Executive on the Education Sub-committee for the Investment Industry Regulatory Organization of Canada (IIROC) Compliance & Legal Section and the Director for the Private Capital Markets Association of Canada. As well, John is a Past Trustee for the Toronto Lawyers Association (TLA) and the Past Co-Chair of the Securities Litigation Section of the Advocates’ Society.