Lawyer Profile
Andrew B. Matheson
Toronto, Ontario

Overview
Under the agreement of this take-private transaction worth C$9 billion, Boralex will continue to operate as an independent private company following closing.
Our Outlook Series 2026 provides forward‑looking analysis of the most important legal, regulatory, and market developments affecting Canadian organizations.
Andrew Matheson is the Head of our National White Collar and Investigations Group and a partner in our Litigation Group in Toronto. He specializes in complex and cross-border investigations, regulatory and criminal defence, and professional discipline matters.
Andrew has diverse advocacy experience in sensitive litigation and investigations. Andrew has represented clients at all levels of the Ontario court and before various administrative and disciplinary tribunals in the province. He has conducted investigation relating to a wide range of exposures, including fraud, corruption, insider trading, money laundering and tax evasion. Andrew’s experience includes practising securities litigation in New York City with Allen & Overy for four years. He was a member of the McCarthy Tétrault team that successfully defended the former CEO of Nortel on criminal fraud charges. Andrew also frequently defends physicians and prosecutes teachers in professional disciplinary matters.
Andrew is active in pro bono work, assisting underprivileged clients in criminal, immigration, commercial and other matters. His experience also includes acting for Guantanamo Bay detainees in habeas corpus litigation. Andrew is an adjunct professor at University of Toronto Law School, teaching White Collar Crime in Global Context. Andrew is a contributor to Annotated Ontario Securities Legislation, Annotated British Columbia Securities Legislation published by LexisNexis.
Practice Areas
Bar Information
Called to the bar: 1997 (ON); 2004 (NY)