Sarah Armstrong

Partner at Fasken Martineau DuMoulin LLP

Chair of Ontario Litigation and Dispute Resolution Practice Group

Sarah Armstrong is a distinguished litigator and the Chair of Fasken’s Ontario Litigation and Dispute Resolution Practice Group. Recognized for her strategic acumen and skilled courtroom advocacy, Sarah represents clients facing complex, business-critical legal challenges. She brings sound judgment and deep expertise to guide clients through intricate commercial disputes and professional liability matters, both in court and in arbitration settings.

Sarah Armstrong has a robust record in class action litigation, with particular proficiency in managing and coordinating the defence of overlapping and multi-jurisdictional proceedings. Her experience spans the areas of securities, product liability, privacy and cybersecurity, insurance coverage, and consumer class actions. She supports a diverse range of industries, including mining, professional services, insurance, health, automotive, retail, and manufacturing.

Sarah acts as both lead and co-counsel at trial and appellate levels, and regularly appears before domestic and international arbitral tribunals. Her commitment to client success and comprehensive industry knowledge make her a trusted advisor for organizations handling high-stakes litigation and arbitration matters.

Year Called to Bar: 2003
Phone: (416) 868-3452
Fax: (416) 364-7813
Email: [email protected]

Sarah Armstrong’s reputation as a leading Canadian litigation and dispute resolution lawyer makes her a go-to expert for clients seeking clear, effective legal solutions in high-profile matters.

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