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William H. Aaronson


Co-head of Mergers & Acquisitions. Advises clients on public and private M&A transactions, joint ventures, shareholder activism and general corporate matters.

Will is co-head of our Mergers & Acquisitions group. He advises clients on public and private M&A transactions, joint ventures and other corporate partnering arrangements. He also advises companies on corporate governance matters, shareholder activism and general corporate matters.

Experience highlights

  • Advanced Accelerator Applications on its acquisition by Novartis
  • Attunity on its acquisition by Qlik Technologies
  • Chemtura in its sale to Lanxess
  • Comcast in its:
    • Superior proposal to acquire Sky plc
    • Acquisitions of AT&T Broadband, NBCUniversal, Craftsy, Daily Candy, Fandango and Plaxo
    • Investments in Comcast SportsNet Bay Area, Comcast SportsNet Houston and Comcast SportsNet Mid-Atlantic
  • Comodo Group on the acquisition of a majority stake in Comodo Certificate Authority by Francisco Partners
  • Emera in its acquisition of TECO Energy
  • FMC Corporation in the separation of its lithium division into a publicly traded company called Livent Corporation
  • Glenn Dubin in his investment in Castleton Commodities International
  • Hargray Communications in its sale to The Pritzker Organization
  • L Brands on the proposed separation of Victoria’s Secret as a privately held company majority-owned by Sycamore Partners
  • Lydall on its acquisition by Unifrax
  • MasterCard International in its:
    • Acquisition of Applied Predictive Technologies
    • Acquisition of the TNS Gateway Services business
  • Millicom in its:
    • Acquisition of Telefónica's assets in Panama, Costa Rica and Nicaragua
    • Acquisition of Cable Onda
  • Mitsubishi Tanabe Pharma in its acquisition of NeuroDerm
  • NBCUniversal in its:
    • Acquisition of DreamWorks Animation
    • Combination of Fandango with Flixster and Rotten Tomatoes
    • Acquisition of The Blackstone Group’s 50% interest in the Universal Orlando theme park
    • Sale of its minority interest in A&E
  • NICE Systems in its acquisition of inContact
  • Novo Nordisk on its acquisition of Neotope Neuroscience
  • Solvay in its:
    • Acquisition of Cytec Industries
    • Acquisition of Chemlogics
    • Divestiture of its Eco Services business
  • Suez in its acquisition of GE Water & Process Technologies and sale of a minority stake in Suez Water Resources
  • TE Connectivity in its:
    • Acquisition of the Creganna Medical Group 
    • Acquisition of Measurement Specialties
    • Acquisition of SEACON Group
    • Acquisition of Deutsch Group SAS
    • Acquisition of ADC Telecommunications
    • Divestitures of its touch solutions, wireless, integrated products and automotive sensors businesses
  • Technip in its:
    • Merger with FMC Technologies
    • Acquisition of Global Industries
    • Acquisition of Stone & Webster Process Technologies from The Shaw Group
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Chambers USA – Corporate/M&A - New York

BTI Consulting Group – “BTI Client All-Star,” 2016

The New York Times listed Will, along with several other Davis Polk partners, as one of the leading dealmakers on Wall Street under the age of 40 (“Facebook of Wall Street’s Future,” NYT, Oct. 3, 2007).

J.D., Harvard Law School
  • magna cum laude
B.A., Johns Hopkins University
  • Phi Beta Kappa
Professional history
  • Partner, 2003-present
  • Head of Client Development, 2016-2017
  • Associate, 1995-2003
  • Northern California office, 2004-2006
Qualifications and admissions
  • State of California
  • State of New York
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