About Keenberg & Co

Keenberg & Co is a small commercial litigation and arbitration firm in downtown Toronto, founded in 2023. It works with business owners, directors, and companies on disputes such as shareholder disagreements, breach of contract, supply chain claims, professional negligence claims against lawyers and financial advisors, and fraud or fiduciary breach allegations. The firm also acts on property disputes, including neighbour disputes, trespass, and easements, and represents both employees and employers in employment claims. Cases can end in settlement, a court order, or an arbitration award, and the firm's lawyers also sit as arbitrators and mediators in disputes between other parties.

Founder Megan Keenberg was called to the Ontario bar in 2007, starting in the litigation group of a large national firm before moving to a Bay Street litigation firm and later co-founding another commercial litigation and employment firm ahead of starting Keenberg & Co. Fellow lawyer Rhea Mathew qualified as a lawyer in India in 2013 and in Ontario in 2022, working as a corporate and litigation lawyer in India, including an internship at the Supreme Court of India, before joining the firm as commercial litigation and arbitration counsel. The two lawyers are supported by an office manager and licensed paralegal, and by a Chief Happiness Officer added to the team in 2024.

Milestones & recognition

  • Megan Keenberg founded Keenberg & Co in 2023, after being called to the Ontario bar in 2007.
  • Megan Keenberg is a Law Society of Ontario Certified Specialist in Civil Litigation and an ADRIC Chartered Arbitrator.
  • Megan Keenberg was recognized in the 2024, 2025, and 2026 editions of Best Lawyers in Canada for Corporate and Commercial Litigation.
  • Lexpert listed Megan Keenberg in Commercial Arbitration in 2025 and 2026.
  • In 2026, Megan Keenberg was inducted into the Canadian Academy of Distinguished Neutrals.
  • Megan Keenberg was promoted from the inaugural NextGen Roster of Arbitrators to the Main Roster at Arbitration Place.

In the community

  • Megan Keenberg has held leadership roles with The Advocates' Society since 2019, including Editor in Chief of its Advocacy Matters newsletter from 2023 to 2025 and Secretary of its Mid-Career Standing Committee for 2026 to 2027.
  • Megan Keenberg chaired the Ontario Bar Association's ADR Section in 2019 to 2020, after serving as its Vice Chair and newsletter editor.
  • Megan Keenberg has been faculty for the Toronto Commercial Arbitration Society's Gold Standard Course on Commercial Arbitration since 2021.
  • Rhea Mathew led The Advocates' Society's Arbitration and Mediation Advocacy Practice Group for the 2025 to 2026 term.
  • Rhea Mathew co-authored a chapter on Article 39 in The ICSID Convention: A Practical Commentary and served as specialist editor for the 7th edition of C.R. Datta on Company Law.

Good to know

A person using a wheelchairWheelchair accessible

Lawyers

No individual lawyers listed on the firm site.

The neighbourhood

Keenberg & Co's office is at 3 Church Street, a building constructed in 1914 with alternating red brick and stone banding in the Edwardian Classical style. The building is designated under the Ontario Heritage Act and sits within the St. Lawrence Neighbourhood Heritage Conservation District, an area shaped by Toronto's 19th century waterfront and rail trade.

That puts the firm a short walk from St. Lawrence Market, in a stretch of downtown Toronto that grew up around 19th century warehouses and wholesale trading houses, a fitting setting for a firm built around resolving disputes between businesses.

Frequently asked questions

What kinds of business disputes does Keenberg & Co handle?
The firm's litigation practice covers shareholder disputes, breach of contract and supply chain claims, professional negligence claims against lawyers, auditors, and financial advisors, fraud and fiduciary breach allegations, property disputes such as neighbour disputes and easements, and employment claims for both employees and employers.
Does Keenberg & Co represent individuals as well as companies?
Yes. The firm represents corporations, directors, officers, and individuals with commercial claims.
Can Keenberg & Co act as an arbitrator or mediator rather than as counsel for one side?
Yes. Beyond representing clients in disputes, the firm's lawyers also act as arbitrators, mediators, and claims officers, in both domestic and international arbitration and in med-arb processes that combine mediation and arbitration.
What does Keenberg & Co charge to act as an arbitrator or mediator?
Its published rates are $8,500 plus HST per hearing day or $850 plus HST per hour for arbitration work, and mediation fees ranging from $6,500 plus HST for a two party half day to $16,000 plus HST for a two day mediation with three parties.
How long has Keenberg & Co been operating?
The firm was founded in 2023 by Megan Keenberg, who was called to the Ontario bar in 2007.
Where is Keenberg & Co located?
The office is at 3 Church Street, Suite 500, in downtown Toronto, in a heritage building near St. Lawrence Market.

Where to find them

3 Church Street, Suite 500, Toronto, Ontario M5E 1M2

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