Lawyer Profile
Martha Harrison
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.
Martha Harrison is a partner and Co‑Head of the International Trade & Investment Law Group at McCarthy Tétrault LLP, where she also leads the firm’s Advertising & Marketing law practice. Widely regarded as a national leader on Canadian trade policy, Martha advises at the intersection of international trade, regulatory law, and strategic global investment, helping clients navigate legal risk in an increasingly complex and geopolitically driven global economy.
Martha is a frequent media commentator, prolific author and sought‑after speaker on trade policy, tariffs and regulatory developments affecting cross‑border commerce. She is regularly interviewed by national and international media on the commercial implications of trade disputes, sanctions and shifting geopolitical alliances, and is known for translating policy developments into clear, actionable business insight.
In an increasingly integrated global market, Martha’s hybrid practice in international trade and product regulatory law enables her to advise clients on how trade and regulatory risk affects complex commercial transactions, enterprise valuation, due diligence and cross‑border investment flows. She works closely with boards, senior executives and deal teams to assess and manage trade exposure in M&A transactions, joint ventures, supply and distribution arrangements and foreign investment, helping clients structure transactions that allocate risk appropriately while protecting value and facilitating capital movement.
Practice Areas
Bar Information
Called to the bar: 2002 (ON)