Lawyer Profile
William S. Osler
Calgary, Alberta

Overview
Will Osler practices in the areas of public and private mergers and acquisitions, securities law, and corporate governance matters, with a particular focus on the oil and gas sector. Will has significant experience in domestic and cross-border joint bidding and co-ownership structures, including partnerships and joint ventures. His corporate governance advisory work includes advising corporations and boards of directors with respect to general compliance matters as well as specific issues arising out of transactions. Will works frequently on offerings of equity and debt securities, acting for both issuers and underwriters, as well as Canadian and international takeover bids, plans of arrangement, corporate reorganizations, divestitures and asset and share purchase transactions. He has represented clients in several of Canada's largest recent initial public offerings.
Will also advises clients on lobbyist registration and compliance matters federally and in Alberta.
Will is recognized by Chambers Global: The World's Leading Lawyers for Business for Corporate/M&A; the Canadian Legal Lexpert Directory for Corporate Finance & Securities; the Lexpert/Report on Business Special Edition – Canada's Leading Energy Lawyers; the Lexpert/Report on Business Special Edition – Canada's Leading Infrastructure Lawyers; Who's Who Legal: Canada as a leading lawyer in Capital Markets; and Best Lawyers in Canada as one of Canada's leading Mergers and Acquisitions lawyers.
Will was formerly the co-head of the firm’s capital markets and mergers & acquisitions practice and a member of the firm’s partnership board. He is a Past President of the Calgary Exhibition and Stampede and currently sits on the boards of the Calgary Stampede Foundation, the Saddledome Foundation, MS Canada, the Kidney Foundation of Canada Southern Alberta Branch and is a member of the Alberta Law Enforcement Review Board. Will was appointed King’s Counsel in 2022, and in 2025 he was awarded the King Charles III Coronation Medal for his contributions to the community.
Lexpert Guide to the Leading U.S./Canada Cross-border Corporate Lawyers in Canada
4500 Bankers Hall East855 2nd Street SWCalgary, AlbertaT2P 4K7 Canada403.298.3100403.265.7219
Practice Areas
Bar Information
Called to the bar: 1995 (AB)