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Marc O. Williams


Marc O. Williams

Mergers & Acquisitions
New York

Advises on mergers and acquisitions and private equity transactions across multiple industries. Also counsels clients on corporate governance and related matters.

Marc is a member of our Mergers & Acquisitions and Private Equity practices. He has a diverse and broad-based practice encompassing mergers and acquisitions, private equity transactions, joint ventures, collaborations and other corporate partnering transactions, restructurings and spinoffs. Multinational corporations turn to Marc with their most critical business initiatives and domestic and cross-border transactions. Marc also represents private equity firms and their portfolio companies, and he was named a 2023 “Private Equity MVP of the Year” by Law360.

He has handled matters across a variety of industries, with particular experience in healthcare, financial services, asset management, consumer products and retail, natural resources, and tech, media and telecom.

He also has an active practice in corporate governance and related matters.

Experience highlights

  • Roche’s acquisitions of Anadys, Flatiron Health, Foundation Medicine, InterMune, Marcadia, Memory Pharmaceuticals, Mirus Bio, Spark Therapeutics, Telavant and Ventana Medical Systems
  • VF Corporation’s:
    • acquisitions of Supreme, Timberland, Nautica, Icebreaker and Altra
    • dispositions of its Nautica, Contemporary Brands Coalition and Licensed Sports Group, and occupational work businesses
    • spinoff of its Jeans and VF Outlet Businesses
  • Morgan Stanley’s acquisitions of E*TRADE, Eaton Vance and Solium Capital
  • UBS’s acquisition of Credit Suisse
  • Emerson’s:
    • acquisitions of Open Systems International, Avocent and Pentair’s Valves & Control business
    • dispositions of its InSinkErator, Therm-O-Disc, Network Power, ClosetMaid, LANDesk and motors businesses
    • sale of control of its Climate Technologies business to Blackstone and subsequent sale of remaining interests
  • Gilead’s acquisition of Immunomedics
  • Verisk’s sales of its financial services business to TransUnion, 3E business to New Mountain Capital and Wood Mackenzie to Veritas Capital
  • Freeport-McMoRan’s:
    • acquisition of Phelps Dodge
    • divestment and shareholder arrangements with Inalum relating to its Grasberg mine
  • Weber’s take-private acquisition by BDT Capital Partners
  • Comcast’s acquisition of NBCUniversal
  • Billtrust’s acquisition by EQT Private Equity
  • Cox Media Group’s sale of television stations to Imagicomm Communications
  • Republic Services’ acquisition of US Ecology and joint venture with Archaea Energy to develop natural gas projects
  • Bank Leumi USA’s sale of U.S. operations to Valley National Bancorp
  • Tyson Foods’:
    • acquisitions of AdvancePierre Foods, Keystone Foods and Hillshire Brands
    • sale of its poultry businesses in Mexico and Brazil
  • BDT Capital Partners’ acquisition of Culligan
  • HSN’s acquisition by Liberty Interactive
  • CSX’s settlement with Mantle Ridge and its simultaneous hiring of a new CEO
  • ConAgra’s:
    • separation into two independent public companies
    • sale of its private label operations to Treehouse Foods
    • acquisition of Ralcorp
    • cooperation agreement with JANA Partners
  • Santander’s acquisition of GE Capital’s Mexican mortgage business and ING’s Mexican mortgage business
  • Western Refining’s acquisition by Tesoro Petroleum
  • Belmond in its successful defense against an unsolicited offer from Indian Hotels
  • Citi’s disposition of its commercial real estate loan portfolio through various transactions
  • Old Lane’s sale to Citigroup
  • FedEx’s acquisition of Kinko’s
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Law360 – “Private Equity MVP of the Year,” 2023

Chambers USA – Corporate/M&A, New York

IFLR1000 – M&A, United States, Highly regarded

Law360 – “Rising Star: M&A,” 2013


J.D., Harvard Law School
  • magna cum laude
B.A., Amherst College
  • magna cum laude

Professional history

  • Davis Polk since 1998

Qualifications and admissions

  • State of New York
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