Partner and Vice-President

A former economic journalist and a lawyer by training, Mathieu Lavallée investigates and analyses his projects to find the best angle or determine the best solutions in sensitive situations.


Over almost 15 years, Mathieu’s career has covered legal, economic and media affairs. With a law degree and a journalism certificate from Université de Montréal, he is a key resource for complex assignments as well as managing crises and public issues. He draws on sharp analytical skills to quickly grasp the challenges to be tackled, before applying fast, effective writing skills. In previous work, he has coached many start-up entrepreneurs through the crucial stages of their development and growth.

Mathieu takes on assignments ranging from major transactions to labour conflicts, including opinion campaigns. He’s a skilled strategist who will zero in on the issue and successfully explains it to the most relevant journalists to get the word out. He’s advising clients working in a broad range of sectors (energy, natural resources, retail, IT, cleantech, finance and investment) in all their strategic communication interventions.

Before joining Exponentiel, Mathieu worked for more than five years with a large public and government relations agency. Prior to that, he was an economic journalist, first for Canal Argent (TVA Group) then for the newspaper Les Affaires. As an attorney, he has practised in the fields of municipal law, housing cooperatives and class actions.

Mathieu is fluent in both English and French. He’s a member of the Barreau du Québec, sits on the board of directors of the Jeune Chambre de commerce de Montréal and of Trajectoire Québec, and is a member of the Grace Dart Foundation investment committee.