David Rosner
Canada Guide 2025
Band 4 : Competition/Antitrust
Email address
[email protected]Contact number
416.597.4145Share profile
Band 4
About
Provided by David Rosner
Practice Areas
David Rosner heads the Competition and Foreign Investment Group at Goodmans. He provides strategic advice on all aspects of Canadian competition law, particularly with respect to complex mergers (including in regulated industries and mergers involving multi-jurisdictional review). David also advises on behavioral matters under Canadian competition law and mergers subject to the Investment Canada Act.
Drawing on his experience practising with a leading international law firm outside Canada, David translates the latest international competition law developments into strategic advantages for his clients in Canada.
Career
David was the only Canadian named in Global Competition Review’s 40 under 40 in 2020, and in 2019, was honoured as one of Lexpert’s Rising Stars: Leading Lawyers Under 40. He is recognized as a leading competition lawyer by Chambers Global, Chambers Canada, The Legal 500 Canada, Best Lawyers in Canada, the Lexpert Special Edition: Canada's Leading Litigation Lawyers and The Canadian Legal Lexpert Directory. He has also been recognized as one of the most highly regarded North American partners by Who’s Who Legal: Competition – Future Leaders since 2017, which profiles the foremost practitioners in the competition community under 45. Clients describe David as “a sharp thinker with great analytical capabilities,” and praise his “straightforward practical advice.”
Professional Memberships
David is an active member of the Canadian competition law community. He has been a professor at Osgoode Hall Law School and served as chair of several committees of the Canadian Bar Association's National Competition Law Section.
He is a member of the Law Society of Ontario, Ontario Bar Association, Canadian Bar Association, and American Bar Association.
Chambers Review
Canada
Toronto-based David Rosner of Goodmans operates a well-respected antitrust and foreign investment practice, with particular expertise in domestic and cross-border merger review files. He also leads the firm's competition and foreign investment practice group.
Strengths
Provided by Chambers
"David provides practical feedback in a timely manner. His experience, business sense and demeanour make him a valuable tool."
"David is a gem of an asset."
"David Rosner goes out of his way to meet his clients' needs while lightening the load by providing understandable advice."
"He has been remarkable in every way we could ask. He has both political and legal knowledge, as well as deep bureaucratic and administrative knowledge."
"David provides practical feedback in a timely manner. His experience, business sense and demeanour make him a valuable tool."
"David is a gem of an asset."
"David Rosner goes out of his way to meet his clients' needs while lightening the load by providing understandable advice."
"He has been remarkable in every way we could ask. He has both political and legal knowledge, as well as deep bureaucratic and administrative knowledge."