Mergers and Acquisitions


Mergers and acquisitions transactions, whether large or small, have inherent complexities that need to be clearly understood and properly addressed. Experienced legal counsel is essential on all M&A transactions and for all clients, ranging from local start-ups to global conglomerates. Osler's M&A group is consistently ranked Band 1 in Chambers Canada, one of the worlds leading legal publications. With decades of experience advising successfully on M&A transactions, Osler can be trusted to provide clients with the right level of legal advice required to lead a successful deal, for several reasons:

  • Involvement in High Volume and Range of Transactions – We are effective at advising on and staffing all types and sizes of transactions, be it for domestic, cross-border or multi-national companies. We have designed and implemented innovative legal structures that have revolutionized the M&A landscape and continue to provide valuable solutions to our clients.
  • Breadth and Depth of Related Expertise – Our leading M&A practitioners are complemented by top-ranked expertise in tax, competition/antitrust, securities/regulatory, banking & financial services, litigation, pensions, employment/executive compensation and all other specialized areas that are key to effecting a successful M&A transaction. Taxation, for instance, is integral to accomplishing strategic M&A initiatives and no other Canadian law firm has been so consistently recognized for the excellence of its tax practice.
  • Client Focus – We understand the business imperative behind a transaction and the business environments in which our clients operate. Our “client first” approach pervades every aspect of our firm culture and we bring that approach to the way we structure a deal, negotiate a deal, mitigate risk and staff and efficiently manage files.
  • U.S./Cross-Border Legal Services – We offer seamless legal services north and south of the border. Our Canadian and New York offices are regularly involved in complex, multi-jurisdictional M&A transactions, providing strategic, innovative advice. Our distinct cross-border orientation enables us to represent U.S. companies doing business in Canada as well as Canadian companies expanding their businesses to the south.


Related Expertise

Jeremy Fraiberg

Partner, Corporate

Emmanuel Pressman

Partner, Chair, Corporate

Frank Turner

Partner, Corporate

Shahir Guindi Ad. E.

National Co-chair
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  • Chambers Canada: Canada’s Leading Lawyers for Business: Band 1, Corporate/M&A
    • "They operate nationally in Canada, with a seamless approach to staffing across offices. They know our company well, and I appreciate their forward thinking about the next transaction to make things more efficient."
  • Chambers Canada: Canada's Leading Lawyers for Business: Band 1, Corporate/Commercial: The Elite - Ontario
    • "They are as good as any firm in Canada. They know our industry and business, give thorough and fixed advice and are very proactive. The quality of the lawyers is consistent, with a single point of contact."
    • "They've been extremely attentive - they do their job well and they do it efficiently."
    • "Their reputation as an M&A shop is virtually unrivalled. They have great bench strength and field multiple teams without anything slipping through the cracks. As a client, we are very well treated."
    • "They are an excellent firm and very strong across all areas. They're very responsive, quick, concise and have deep subject matter expertise."
  • Chambers Canada: Canada's Leading Lawyers for Business: Corporate/Commercial: The Elite - Alberta
    • "One of the best firms to use for anything with a high degree of complexity and for matters that span multiple practice areas."
    • "They are not only knowledgeable and smart but are also prepared to work hard, are businesslike in their focus on legal issues and meet their commitments to clients."
    • "They have great depth across various practice areas - when working with them you never feel under-served."
  • Chambers Canada: Canada's Leading Lawyers for Business: Corporate/Commercial: The Elite - Québec
    • "They have a deep bench, which is invaluable. They are incredibly responsive and helpful in everything that they do."
    • "They were very nimble and they put together a very good team."
    • "They have a very good outlook on the market and are well known for their business judgement."
    • "They're an excellent firm and are incredibly good in terms of their level of expertise of legal counsel. The delivery of the services has been incredibly professional."
  • Chambers Global: The World's Leading Lawyers for Business: Band 1, Corporate/M&A
    • “Both Canadian and international clients rely on Osler for its breadth and depth of expertise in corporate/M&A law.”
    • “Osler has played a key advisory role in many of the largest M&A transactions in Canada over the past several years.”


  • The Canadian Legal Lexpert Directory: Recognized in Mergers & Acquisitions (Calgary, Alberta; Montreal, Quebec; Ottawa, Ontario; Toronto, Ontario)


  • IFLR 1000: The Guide to the World’s Leading Financial Law Firms: Tier 1, M&A
  • IFLR 1000: The Guide to the World’s Leading Financial Law Firms: M&A
  • IFLR Americas Awards: National Corporate Firm of the Year - Canada, 2020

Legal 500

  • Legal 500: Tier 1, Corporate/M&A

Best Lawyers

  • Best Lawyers in Canada: Osler lawyers recognized as leaders in M&A
  • Best Lawyers in Canada: Osler named as "Law Firm of the Year" in the area of Mergers & Acquisitions Law

Expert Guides

  • Expert Guides: The Legal Media Group Guides to the World’s Leading Lawyers: Osler lawyers recognized as leaders in Mergers & Acquisitions Law


M&A League Table Rankings

  • Mergermarket: Osler ranked #1 Canadian law firm in the M&A league tables for Canadian announced deals by value, FY 2019
  • Refinitiv: Osler ranked # 2 Canadian law firm for announced deals by value, FY 2019
  • Bloomberg: Osler ranked #1 Canadian law firm for announced deals by value, FY 2019
  • Mergermarket: Osler ranked #1 Canadian law firm in the M&A league tables for Canadian announced deals by value, FY 2018
  • Refinitiv: Osler ranked # 1 Canadian law firm for announced deals by value, FY 2018
  • Bloomberg: Osler ranked #2 Canadian law firm for announced deals by value, FY 2018

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