LAWYER PROFILE
Tristram Mallett

Tristram Mallett

Canada 2026

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Ranked in 1 practice area

About

Provided by Osler, Hoskin & Harcourt LLP

Canada

Practice Areas

Tris Mallett’s practice focuses on corporate litigation, class action defence and securities enforcement. He frequently advises clients on contested merger transactions; take-over bid litigation; shareholder dissent and appraisal litigation and shareholder derivative claims; securities misrepresentation, fraud and insider trading matters; prosecutions undertaken by regulatory authorities and industry organizations; and related internal investigations.

Tris also defends class action claims usually in the securities, competition/anti-trust or product liability areas. These class action defence engagements are often multi-jurisdictional and cross-border in nature requiring strategic coordination with counsel in other jurisdictions including most frequently the US and Europe. Tris has acted in proceedings before various courts in Alberta, Ontario and B.C.; federal and appellate courts; and before a variety of administrative and regulatory tribunals as well as in various arbitration and mediation settings.

Career

Queen’s University, LL.B.

University of Guelph, B.A.

Bar Admission: Alberta, 1997 | Ontario, 1989

Professional Memberships

Alberta and Ontario Law Societies

Canadian Bar Association

Chambers Review

Provided by Chambers

Chambers Canada Guide

Litigation: General Commercial - Alberta

Band 4
Band 4

Individual Editorial

Skilled corporate litigator Tristram Mallett is noted for his expertise with contentious securities and M&A mandates. He has also represented clients in product liability, privacy and contractual lawsuits, covering both single-plaintiff and class proceedings. He is based in Osler, Hoskin & Harcourt's Calgary office.

Strengths

Provided by Chambers

  • Tristram has deep commercial knowledge.

    Litigation: General CommercialChambers Canada Guide
  • I truly enjoy working with Tristram and his team.

    Litigation: General CommercialChambers Canada Guide
  • Tristram Mallett is top notch and did a terrific job on our file. We are very impressed with him.

    Litigation: General CommercialChambers Canada Guide

Ranked Individuals at Osler, Hoskin & Harcourt LLP (199)

Alberta

British Columbia

Nationwide - Canada

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