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Corporate – M&A

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.

Whether it’s crafting a creative deal structure to help a company achieve its M&A objectives, executing on a bet-the-company combination, defending against shareholder activism or otherwise advising Boards and management teams as they navigate what can often seem like a complex M&A landscape, we pride ourselves on our ability to anticipate obstacles and help clients find innovative solutions to complicated issues.  

With a wealth of experience steering a wide range of M&A transactions across the United States, United Kingdom, Latin America, Europe and Asia, our lawyers partner with clients through the entire lifecycle of the transaction from planning to execution and all of the intricacies in between.

Practice Group of the Year

An M&A Practice Group of the Year, Law360 2022

Our clients include an array of players in the corporate M&A space, including strategic buyers and sellers, boards of directors of global Fortune 500 companies and smaller private companies, founders and family-owned businesses, financial advisors and special committees, among others, giving us a unique 360 degree perspective into the complexities of any type of deal, such as:

  • Strategic mergers and business combinations
  • Spin-offs, split-offs and recapitalizations
  • Carve-out acquisitions and divestitures
  • Joint ventures
  • Recapitalizations
  • Asset sales and purchases
  • Stock sales, purchases and tender offers
  • Contested M&A
  • Proxy contents and general corporate governance 

Our recent transactions include: 

Aetna’s Board of Directors in CVS Health’s $78 billion acquisition of Aetna
Microsoft’s pending $75 billion acquisition of Activision Blizzard, its $28.2 billion acquisition of LinkedIn and its $19.7 billion acquisition of Nuance Communications
Broadcom’s $61 billion acquisition of VMware
Dell’s $52 billion spin-off of its 81% equity ownership interest in VMware
Twitter’s Board of Directors in Twitter’s $44 billion acquisition by Elon Musk
L3 Technologies’ $33.5 billion business combination with Harris Corporation
Cisco Systems’ announced $28 billion acquisition of Splunk
Refinitiv’s $27 billion acquisition by London Stock Exchange
First Data’s $22 billion merger with Fiserv
Vistra Energy’s $20 billion merger with Dynegy
PPD’s $17.4 billion acquisition by Thermo Fisher Scientific
Change Healthcare’s $13.8 acquisition by UnitedHealth Group
Genesee & Wyoming’s $8.4 billion acquisition by affiliates of Brookfield Infrastructure and GIC
Versum Materials’ $6.5 billion acquisition by Merck KGaA, Darmstadt, Germany
Walgreens Boots Alliance’s $5.175 billion acquisition of Rite Aid stores
Vivint Smart Home’s $5.2 billion acquisition by NRG Energy
SiriusXM’s $3.5 billion acquisition of Pandora
Apria’s acquisition by Owens & Minor
Electronic Arts’ acquisition of Glu Mobile
Mars’ strategic partnership with KIND, acquisition of Trü Frü and investment in Vetsource
McKesson’s acquisition of Rx Savings Solutions and its joint venture with HCA Healthcare Inc.’s Sarah Cannon Research Institute
Nestlé’s acquisition of The Bountiful Company
Wella Company’s acquisition of Briogeo
“Simpson [Thacher] is unparalleled in the level of client service it offers.”
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