Gillian has a broad corporate and securities law practice, focusing on mergers and acquisitions and corporate finance. Gillian advises clients on a variety of domestic and international transactions, including public and private acquisitions and divestitures, debt and equity financings and corporate reorganizations. In addition to transactional work, Gillian regularly advises clients on complex commercial agreements and securities regulatory matters, including continuous disclosure obligations.

Prior to joining Lawson Lundell, Gillian practiced at a leading Canadian law firm in Toronto. 

Professional Activities

  • Canadian Bar Association, Member
  • Guest Lecturer on Mergers and Acquisitions, Peter A. Allard School of Law, UBC (2018 – Present)

Community Activities

  • Highlands Early Learning Centre, Board Member

Recognitions & Rankings

Recognitions & Rankings

  • Best Lawyers in Canada: Ones to Watch 2023-2024: recognised for Corporate Law
  • Thomson Reuters "Stand-out Lawyer" 2022
  • Acritas Stars 2019-2021



  • Counsel to Westshore Terminals on a range of commercial matters, including, negotiation of a long-term agreement with BHP Canada for the provision of port services.
  • Counsel to BDC Capital Inc., the investment arm of the Business Development Bank of Canada, in connection with its equity investment in a number of cleantech companies.
  • Transaction counsel to Brookfield in connection with the divestiture of portfolio companies in a range of industries, including cloud computing and property management.
  • Counsel to Hub International Limited on multiple acquisitions of Canadian insurance brokerages, including TRG Group Benefits & Pensions Inc.
  • Counsel to SSR Mining Inc. on its C$337 million acquisition of Claude Resources Inc. by way of a plan of arrangement.
  • Counsel to Vancity Community Investment Bank on its acquisition of CoPower Inc., an issuer of green bonds.
  • Counsel to SSR Mining Inc. on its US$230 million convertible note offering.
  • Counsel to B2Gold Corp. on its US$100 million at-the-market offering in Canada and the United States.
  • Counsel to SSR Mining Inc. on the formation of a joint venture with Golden Arrow Resources Corp. for the development of the Chinchillas project in Argentina.
  • Counsel to an intermediate mining company on its sale of certain exploration properties in Peru and Argentina.

News & Publications

Speaking Engagements

Speaking Engagements

  • 'A Changing Practice: Defining Your Own Path to Success in Law,' Canadian Bar Association and Vancouver Bar Association, Presenter, 2019
Gillian Muirhead, Lawson Lundell Photo
t 604.631.9133
f 604.669.1620

Assistant Contact

Bar Admissions

  • British Columbia (2015)
  • Law Society of Upper Canada (2012)


University of Toronto, (J.D. Hons., 2011)

Queen’s University (B.A. Hons., with distinction, 2007)

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