Tristram J. Mallett

Osler, Hoskin & Harcourt LLP

450 1st St SW, Suite 2500
Calgary, AB T2P 5H1
Phone: (403) 260-7041
Fax: (403) 260-7024

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. Also defends class action claims usually in the securities, competition/antitrust or product liability areas. These class action defence engagements are often multijurisdictional and cross-border in nature requiring strategic coordination with counsel in other jurisdictions including, most frequently, the US and Europe. Has acted in proceedings before various courts in Alberta, Ontario and British Columbia; federal and appellate courts; and before a variety of administrative and regulatory tribunals, as well as in various arbitration settings. Former managing partner of Osler’s Calgary office. Admitted to the Bar in Alberta (1997) and Ontario (1989).

Year Called to the Bar:1989 (ON); 1997 (AB)
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Consistently Recommended
Litigation - Securities
Repeatedly Recommended
Litigation - Directors' & Officers' Liability
Litigation - Corporate Commercial
Class Actions