Sean Williamson

Of Counsel

Sean is an accomplished corporate and securities lawyer with extensive experience in corporate finance transactions, mergers and acquisitions.


Corporate Governance; Corporate Law; Mergers and Acquisitions; Regulatory Law; Securities; Transactional/Financing

Former firms & in-house roles:

Canadian Securities Transition Office; Cassels Brock & Blackwell LLP; IAMGOLD Corporation; Norton Rose Fulbright Canada LLP

Sean comes from both a private practice and in-house counsel background, where he worked on corporate finance transactions, mergers and acquisitions, shareholder activism, and general securities regulatory matters, including continuous disclosure and stock exchange rules. Sean makes it a priority to provide his clients with insightful legal advice and counsel that is tailored to their specific legal needs and aligns with their business and legal goals. He has provided legal services to clients across a variety of industries, including mining, cannabis, and telecommunications. 

Sean also has a wealth of experience working closely with directors and senior executives. He is well-versed in advising business leaders on complex transactional, regulatory, and corporate governance matters, as well as assisting in the development of governance processes, ensuring their effectiveness.

When it comes to legal and regulatory developments, Sean keeps his finger on the pulse to ensure his clients remain in compliance and have efficient processes in place to maintain this. 



University of Windsor Faculty of Law (J.D.) 2011

King’s College London, UK (M.A.) 2008

University of Toronto (Victoria College) (B.A. Hons) 2003

Interested in working with Sean?

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