About Walker Sorensen LLP

Walker Sorensen LLP is a small business law firm in Toronto focused on insurance and reinsurance, corporate governance, and law firm professional liability risk management. It was founded in April 2007 by John L. Walker and Sean G. Sorensen; Sorensen had previously been a partner in McCarthy Tetrault LLP's Business Law Group. The firm has stayed small by design, with four partners, an associate, a law clerk, and an executive assistant working from an office on Bloor Street East. From there it advises private corporations, insurers, reinsurers, banks, and professional associations across Canada and abroad.

The firm's insurance and reinsurance practice covers incorporating and licensing new insurers, registering foreign insurer branches, drafting and negotiating reinsurance treaties and commutation agreements, and advising banks on the insurance business rules under the Bank Act. It also runs a niche practice auditing law firms' own professional liability risk, drafting risk management policies and offering online assessment surveys and courses for other firms and insurers. Several of its lawyers have been repeatedly recognized in the Canadian Legal Lexpert Directory and ranked in Chambers Canada for insurance work.

Milestones & recognition

  • Founded in April 2007 as a partnership between John L. Walker and Sean G. Sorensen; Sorensen was formerly of McCarthy Tetrault LLP's Business Law Group.
  • John L. Walker was named a Senior Statesperson for Insurance in Chambers Canada 2025 and is a repeatedly recommended practitioner in Financial Institutions Regulation in the Canadian Legal Lexpert Directory.
  • Sean G. Sorensen is Band 3 ranked for Insurance in Chambers Canada 2025, recommended in Who's Who Legal: Canada 2024, and a repeatedly recommended practitioner in Financial Institutions Regulation in the Canadian Legal Lexpert Directory.
  • A partner at the firm is Band 3 ranked for Insurance in Chambers Canada 2025 and Lexpert ranked.
  • John L. Walker sits on the Board of Directors and Conduct Review Committee of Genworth Financial Mortgage Insurance Company Canada and of MIC Insurance Company Canada.

In the community

  • A partner at the firm chairs the Governance Committee and sits on the Board of Directors of the Toronto Lawyers Association.
  • One of the firm's lawyers is an executive member of the Canadian Bar Association's Business Law Section.
  • One of the firm's lawyers volunteers regularly with Pro Bono Ontario's hotline.

Good to know

A person using a wheelchairWheelchair accessible

This firm’s lawyers at a glance

Called to the bar
1987–2015 · median 27 years in practice 5 of 5 lawyers
Law schools
University of Calgary, University of Toronto, University of Western Ontario, University of Windsor 4 of 5 lawyers

The neighbourhood

Walker Sorensen LLP's office is in Suite 810 at 2 Bloor Street East, at the corner of Yonge and Bloor in midtown Toronto. The intersection sits above the Bloor-Yonge subway station, where the TTC's Line 1 and Line 2 meet, giving clients travelling in from elsewhere in the city, or from out of town for a meeting with an insurer or bank client, an easy transit connection right to the building. It's a short walk from the Yorkville shopping district to the west.

Frequently asked questions

What kind of work does Walker Sorensen LLP do?
Walker Sorensen LLP is a business law firm that focuses on insurance and reinsurance regulatory work, corporate governance, and professional liability risk management for law firms and insurers.
Does Walker Sorensen LLP act for individual clients or only companies?
The firm's practice is built around institutional clients, private corporations, insurers, reinsurers, banks, and professional associations, rather than individual consumer matters.
Can Walker Sorensen LLP help a law firm review its professional liability risk?
Yes. The firm conducts professional liability risk management audits for law firms and drafts related policies and procedures, and it also offers online risk assessment surveys and courses.
Does Walker Sorensen LLP work on reinsurance matters, not just insurance?
Yes. The firm drafts and negotiates reinsurance treaties and commutation agreements and handles coverage analysis and portfolio audits for reinsurers.
How long has Walker Sorensen LLP been in practice?
The firm was founded in April 2007 by John L. Walker and Sean G. Sorensen. Sorensen was previously a partner in McCarthy Tetrault LLP's Business Law Group.
Where is Walker Sorensen LLP's office located?
The firm is at Suite 810, 2 Bloor Street East in Toronto, at the corner of Yonge and Bloor, above the Bloor-Yonge subway interchange.

Where to find them

Suite 810, 2 Bloor Street East, Toronto, ON M4W 1A8 · 416-249-3929

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Listing compiled from the firm’s public website in September 2026. Verify licence status in the Law Society of Ontario directory ↗