Margaret R. O'Sullivan Managing Partner

Margaret’s practice involves all aspects of trust and estate work for domestic and international private clients, including estate planning; will and trust planning; incapacity planning; estate litigation; advising executors, trustees and beneficiaries and administration of estates and trusts, with a focus on high net worth domestic, cross border and multijurisdictional succession issues. Margaret is recognized in The Best Lawyers in Canada 2019, Legal Week’s Private Client Global Elite 2019, in the 2019 Edition of The Canadian Legal Lexpert Directory as one of the most frequently recommended estate planning lawyers, in The Who’s Who Legal: Private Client 2019 and in The Who’s Who Legal: Canada 2019. She is one of seven top-ranked Band 1 private client lawyers in Canada in Chambers High Net Worth Guide 2019. She is the recipient of the 2014 STEP Founder’s Award for Outstanding Achievement and the Ontario Bar Association’s 2013 Award of Excellence in Trusts and Estates Law. Prior to establishing an independent practice, Margaret was a partner in the Toronto office of the national Canadian law firm Stikeman Elliott where she directed the firm’s trusts and estates practice. She has practiced exclusively in the area of trusts and estates since 1983.