Michael C. DeCosimo

Michael C. DeCosimo
Telephone: 416 869 5349
Fax: 416 360 8877

Suite 2100, Scotia Plaza
40 King Street West
Toronto, ON M5H 3C2

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Michael C. DeCosimo is a partner in our Business Law Group. He practices corporate and securities law with an emphasis on corporate finance, mergers & acquisitions, corporate governance and investment funds.

Michael has acted as issuer’s counsel on over 75 initial public offerings (including companies and structured products) and other public and private offerings, raising aggregate gross proceeds of over $8 billion. Michael also acts for underwriters and agents in connection with public and private financings.

Michael has significant experience advising companies ranging in size from start-ups to multinationals and serves as a trusted advisor to senior executives of public and private companies and investment funds, boards of directors and independent review committees on all aspects of transactions, corporate governance, disclosure and reporting requirements, risk management and compliance.

Michael also has extensive expertise in drafting and negotiating agreements, policies and incentive plans for senior executives and directors.

Michael has been ranked as a leader in his field by the Canadian Legal Lexpert Directory, the Lexpert Guide to the Leading US/Canada Cross-Border Corporate Lawyers in Canada and the Lexpert/ROB Special Edition on Global Mining. He was also selected as a Lexpert “Rising Star” award recipient in 2010.


University of Windsor, LL.B., 1997

Western University, H.B.A., 1992

Call to the bar

Ontario, 1999


  • Acritas Star 2017: Independently Rated Lawyers (nominated as a stand-out lawyer by senior in-house counsel)
  • Legal 500 Canada (Capital Markets)
  • Canadian Legal Lexpert Directory (Investment Funds & Asset Management)
  • Lexpert/Report on Business Special Edition on Global Mining
  • Lexpert Guide to the Leading US/Canada Cross-Border Corporate Lawyers in Canada (Corporate Lawyer to  Watch) (2011)
  • Lexpert Rising Star: Leading Lawyers Under 40 (2010)


Mergers & Acquisitions