Canada’s Top 40 Under 40 Honoree
2026
Executive Chair
Cassels Brock & Blackwell LLP
The youngest partner in the firm’s history, Jonathan Sherman has built a career defined by exceptional achievement and an uncommon trajectory. Today, as Executive Chair of Cassels, a Partner in its Capital Markets and Public M&A Group and Founder of its Cannabis Group, he is a leader of the firm and a trusted advisor on some of the market’s most significant and complex transactions.
Jonathan counsels industry leaders, entrepreneurs and investment dealers on transformative domestic and cross-border matters, bringing sophisticated legal expertise and sharp commercial judgment to each mandate. Jonathan also plays a central role in shaping Cassels’ strategic direction, while his perspective on business and the law is regularly sought by journalists, conferences and academic institutions. His career reflects the rare ability to lead at the highest level while earning the trust of clients navigating their most consequential decisions.
Please note: Company names and biographical information here may reflect the role and activity held at the time of receiving the award.
