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Mergers and Acquisitions

Unrivaled in its reputation, unique in its breadth, our Mergers and Acquisitions Practice ranks every year as one of the leaders in global M&A transactions.

Our practice spans every industry segment and geographic region, and includes many of the most prominent U.S. and international transactions of the past several decades. A range of clients—public and private companies, founder- and family-owned businesses, investors and boards, including special committees—choose us to advise on the full spectrum of transactions, including negotiated and unsolicited mergers and takeovers, minority investments and joint ventures, and buyouts. We also counsel our clients on a broad range of corporate governance and control matters, including proxy contests and challenges by activist investors.

$1.7+ Trillion
From 2019 through 2023, we advised on over 950 announced deals with an aggregate value of over $1.7 trillion (Bloomberg)

Clients appreciate, as one of our greatest strengths, our collaborative approachwe draw upon lawyers from different practice groups, including those who focus on antitrust, Foreign Corrupt Practices Act (FCPA), Committee on Foreign Investment in United States (CFIUS) and intellectual property, to provide comprehensive transaction advice and execution. For transactions that require financing, our clients utilize the resources of our world-class capital markets and credit financing groups. For transactions in regulated sectors, such as banking, insurance and energy, clients rely on us for not only regulatory guidance but also transactional lawyers who have deep experience in structuring and executing transactions within the relevant regulatory framework. Drawing upon the broad resources of our Firm, we are able to provide our clients with integrated teams able to execute the most complex transactions in a seamless, efficient manner.

By being at the forefront of deal-making and corporate activity, we are able to provide our clients with insight into the most current trends and developments and assist them in achieving their goals in the most commercial, effective way.

Band 1
Chambers Global Band 1 M&A rankings in United States, 2007–2023; Asia-Pacific, 2010–2014, 2016–2020; and Latin America, 2014–2022
“They’re so involved with big mega-mergers that they’re a well-oiled machine.”
- Chambers USA (quoting a client)

    News & Events



        Spotlight on
        Law360 Profiles Simpson Thacher as a Mergers & Acquisitions Practice Group of the Year
        Spotlight on
        Simpson Thacher Recognized as Top Global M&A Advisor for 2022 by Bloomberg and Refinitiv
        Spotlight on
        Getting the Deal Through: Public M&A 2022