skip to main content
Denisa Mertiri

Denisa Mertiri


Denisa’s practice focuses on a broad range of complex commercial litigation claims, including breach of contract, breach of fiduciary duty, director and officer liability claims, shareholder oppression claims, private equity transactions and securities related issues.

Denisa obtained her J.D. from Osgoode Hall Law School. While at law school, Denisa practiced criminal law as a Division Leader at the Osgoode Community & Legal Aid Services Programme under the supervision of practitioners. She was also a Co-Chair of the Osgoode Women’s Caucus (currently, the Osgoode Feminist Collective) and a team member in the Donald G.H. Bowman National Tax Moot. At law school, Denisa was awarded the Charles Edward Woodrow Award for academic achievement.

Prior to joining Thornton Grout Finnigan LLP, Denisa was a summer student and articling student at a large international law firm and she was also an associate at a securities litigation boutique.

Representative Mandates

  • Junior counsel representing the 630,000 non-mutual policy holders of Economical Mutual Insurance Company in negotiations over $2 billion in expected demutualization benefits arising from Economical’s demutualization.
  • Junior litigation counsel on a secondary market misrepresentation class action involving the misrepresentation of mining data in continuous disclosure documents.
  • Part of a team advising a defendant in one of Canada’s largest securities fraud class actions and in respect of related Ontario Securities Commission proceedings.
  • Part of a team that secured a $10 million judgment on behalf of a large international bank in an action for fraud against an Ontario borrower and its principals.

Professional Involvement

Denisa is a member of the teaching team at the Lawyer as Negotiator seminar at Osgoode Hall Law School and an advisor at the Law Practice Program's Trial Advocacy Seminar. She regularly volunteers for Pro Bono Law Ontario.

Denisa is a member of:

  • The Advocates’ Society
  • Canadian Bar Association
  • Ontario Bar Association


  • J.D. (Osgoode Hall Law School), 2014
  • M.A. (York University), 2011
  • B.Sc. (Hon.) (with Distinction) (University of Toronto), 2010

Thornton Grout Finnigan LLP, Suite 3200, 100 Wellington Street West, P.O. Box 329, Toronto-Dominion Centre, Toronto, ON M5K 1K7 Canada T 416.304.1616 E

© 2017 All rights reserved | Legal Disclaimer | Privacy Policy