Osler’s M&A group, consistently ranked Band 1 in Chambers Canada, advises on all types and sizes of transactions and has deep experience from decades of deal flow, be it for domestic, cross-border or multinational companies. Our lawyers have designed and implemented innovative legal structures that have revolutionized the M&A landscape and continue to provide valuable solutions for our clients.
Our firm can be trusted to provide clients with the right level of legal advice required to lead a successful deal, for several reasons:
- Band 1 ranking in Chambers Canada, one of the world’s leading legal industry ranking publications – As well, for a number of years Osler has been the highest ranked Canadian law firm in M&A league tables published by Bloomberg and LSEG (formerly Refinitiv). Our firm advises on domestic, cross-border, and multi-jurisdictional transactions involving public companies, private companies, private equity sponsors, emerging companies and start-ups, global conglomerates, pension funds, sovereign funds, and financial advisors.
- Breadth and depth of related expertise – Our leading M&A practitioners are complemented by top-ranked expertise in tax, competition/antitrust, securities/regulatory, banking and financial services, litigation, pensions, employment/executive compensation and all other specialized areas that are critical to 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 – Osler lawyers 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.
Key Contacts
Co-Chair
Partner, Corporate, Toronto
Co-Chair
Partner, Corporate, Toronto
Latest Insights
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Connect with Osler at IBA 2025 in Toronto!
Osler, your Canadian partner As a proud host of the 2025 IBA Annual Conference in Toronto, we are delighted to welcome our global peers from...
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SubscribeAwards and Recognition
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Recognized in Corporate/M&A (Band 1); Corporate/Commercial: The Elite: Ontario (Band 1), Alberta (Band 1), British Columbia and Québec.
—Chambers Canada: Canada’s Leading Lawyers for Business: -
Recognized in Corporate/M&A (Band 1).
—Chambers Global: The World's Leading Lawyers for Business -
Recognized in Mergers & Acquisitions (Calgary, Alberta; Montreal, Quebec; Ottawa, Ontario; Toronto, Ontario).
—The Canadian Legal Lexpert Directory -
The Guide to the World’s Leading Financial Law Firms: Recognized in M&A (Tier 1).
—IFLR 1000
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National Corporate Firm of the Year – Canada, 2023, 2020 and 2017.
—IFLR Americas Awards -
Recognized in Corporate and M&A (Tier 1).
—Legal 500 -
#2 Canadian law firm by value and by deal count, H1 2025.
—Mergermarket -
#1 law firm for Canadian announced deals by Value; #2 law firm for Canadian announced deals by deal count, FY 2024.
—LSEG -
#1 Canadian law firm and #2 overall for Canadian announced deals by volume (value), FY 2024.
—Bloomberg
In the Media
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Osler News November 4, 2025
Osler among the best in 2025 M&A league tables for first nine months
Osler has once again been recognized as a top Canadian law firm in the M&A league tables for the first nine months of 2025.
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Osler News October 6, 2025
Energy lawyers George Antonopoulos and Mauryah McLaughlin join Osler’s Calgary office as partners
Energy lawyers George Antonopoulos and Mauryah McLaughlin join Osler’s Calgary office as partners.
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Osler News September 25, 2025
Osler receives top rankings in 2026 edition of Chambers Canada
Osler is proud to have once again been ranked as a leading law firm in the 2026 edition of Chambers Canada.
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Media Mentions September 4, 2025
M&A: Strong growth for Canadian firms – Droit-inc
In the first half of 2025, Canadian business saw an increase in deals year over year, with technology, finance and energy sectors leading...
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