Gillian Dingle > Torys > Toronto, Canada > Lawyer Profile


Work Department

Dispute Resolution, Litigation


A sophisticated and business-minded litigator with deep market insight, Gillian guides clients through the legal and regulatory developments on matters ranging from securities litigation to class actions.

Gillian is the practice group leader for Torys’ litigation department and co-head of the firm’s securities defence practice. Her practice focuses on securities litigation and corporate disputes.

On the securities side of her practice, Gillian frequently acts for capital market participants in securities class actions, professional liability claims and regulatory investigations involving the Investment Industry Regulatory Organization of Canada, the Mutual Fund Dealers’ Association and the Ontario Securities Commission. As a complement to her securities regulatory work, she advises financial institutions on investigations involving consumer protection matters.

Gillian also maintains an active commercial litigation practice, representing corporations in contested transaction matters, shareholder disputes, breach of contract claims and other business torts. She has appeared as counsel in all levels of court in Ontario, the Federal Court, the Federal Court of Appeal and the Yukon Court of Appeal.


Ontario Bar, 2005


Before joining Torys, Gillian was senior in-house counsel at a Canadian financial institution.

Gillian sits on the Steering Committee of the OSC Litigation Assistance Program, which provides free legal assistance to unrepresented respondents to the OSC administrative proceedings.

In the community, she is a board member of Special Olympics Ontario, an organization that enriches the lives of Ontarians with an intellectual disability through sport. She also volunteers with Golden Future, an organization that performs outreach work with high school students in Khyelitsha township, South Africa.

Lawyer Rankings

Canada > Dispute Resolution

(Next Generation Partners: Ontario)

Gillian DingleTorys

Torys has a robust dispute resolution offering and excels in high-stakes litigation across Canada, with specialist practitioners in financial services, product liability and IP. It has an established client base of heavyweight companies in the country, including Rogers Communications, Stronach Consulting and MGM Resorts International, all of which have sought the team’s assistance in major recent cases. In Ontario, the team is one of the market leaders and is jointly led by Gillian Dingle, who focuses on civil litigation in the areas of corporate and securities law, and Linda Plumpton, who has extensive experience leading in bet-the-company litigation for domestic clients. Sheila Block is a well-respected trial and appellate counsel with a broad civil litigation practice, and Patricia Jackson is another key name in class actions and corporate and commercial litigation. Sarah Whitmore was promoted to the partnership in January 2021 and is an increasingly important figure in the Toronto team. ‘Outstanding litigator‘ Sylvie Rodrigue heads the firm’s broad Quebec offering, which is going from strength to strength and has seen a recent increase in data privacy cases as well as matters tied to the pandemic. Christopher Richter has expertise in transnational disputes and matters of private international law, and senior associate Marie-Ève Gingras assists across a broad range of cases.