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Direct: 416.217.0850
Fax: 416.217.0220
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Kate’s litigation practice includes complex corporate/commercial, professional discipline, employment, fraud, and defamation issues. She has appeared before all levels of the Ontario courts as well as the British Columbia Supreme Court, and before various arbitrators and administrative tribunals. Her practice maintains a significant focus on securities regulation, acting regularly on investigations and proceedings before the Ontario Securities Commission, the Investment Industry Regulatory Organization of Canada and the Mutual Fund Dealers Association.  She also has experience in dealing with matters before the College of Physicians and Surgeons of Ontario, the Ontario Municipal Board and the Financial Planning Standards Council.

Kate was lead Commission counsel to former Associate Chief Justice Frank Marrocco on the Collingwood Judicial Inquiry, which investigated the sale of a 50% interest in the Town’s hydro utility among other things. She was co-lead counsel to the COVID-19 Long-Term Care Commission, which investigated deaths from the virus in long-term care homes. In 2017-18 she acted as Senior Enforcement Counsel in the Enforcement Branch of the Ontario Securities Commission on a secondment.  In that role, she represented Staff of the Commission in numerous enforcement matters, including prosecuting allegations of unregistered trading, illegal distributions and fraud, and advising on confidential investigations. She acted for Staff in a significant joint hearing before the Commission and the Financial and Consumer Affairs Authority of Saskatchewan involving the interpretation of a newly-adopted takeover bid regime and its applicability to a contested takeover in the cannabis industry.

Before joining Crawley MacKewn Brush, Ms. McGrann was an associate in another Toronto litigation firm, also practising civil and regulatory litigation.  Over her career she has advised and represented clients in a wide variety of subject areas ranging from indigenous rights to intellectual property, municipal law and professional negligence. She holds her JD from the University of Toronto Faculty of Law, and her B.Sc. from McMaster University, where her research and published work focused on antibiotic resistance in bacteria.

Awards & Recognition

In 2021, Kate received the Lexpert Rising Star Award which recognizes leading lawyers under the age of 40 across Canada. She has also been ranked by Lexpert as a leading Securities Litigation Lawyer. Since 2018, Kate has been recognized by Benchmark Litigation Canada as one of the top litigation lawyers under 40 in Canada. She has also been recognized by Benchmark Litigation Canada as a Future Litigation Star.

Speaking Engagements & Publications

Co-Author, Restrictive Covenants in M&A Transactions: Drafting Enforceable Non-Compete Clauses, M&A Risk Advisor, May 4, 2022.

Co-Author, “Reduce Litigation Risk for Your M&A Deal with Dispute Resolution Clauses”, M&A Risk Advisor, December 15, 2021

Co-Chair, “Beyond Mentoring: A Dialogue on Sponsorship for Women Advocates”, Breakfast Near Tiffany’s VII, The Advocates’ Society, October 10, 2018 

Speaker and Author, “CSA Proposed Best Interest Standard”, OBA Securities Litigation in the Regulatory Environment, October 23, 2017

Co-Author, When Is “Close” Close Enough? Assessing the Availability of the Family, Friends and Business Associates Prospectus Exemption, PCMA E-News Brief, Sept 26, 2017

Author, “Creating, Maintaining and Protecting the Corporate Reputation Online”, (2014) Vol 3 Financial Governance Journal


Direct: 416.217.0850
Fax: 416.217.0220
vCard | LinkedIn

Awards & Recognition

Lexpert Logo Lexpert Logo Benchmark Logo Benchmark Logo Best Lawyers Logo


Called to the Bar – 2008

Successfully completed the New York State Bar Examinations

LL.B., University of Toronto – 2007

B.Sc.(Hons) McMaster University


Member, Advocates’ Society, Securities Litigation Practice Group