Edward Sonnenschein

  • Partner
  • Eted.sonnenschein@lw.com
  • 885 Third Avenue
  • New York, NY 10022-4834
  • USA
  • T +1.212.906.1266


Ted Sonnenschein represents public and private companies and private equity firms in their highest-stakes mergers and acquisitions, joint ventures, restructurings, and spin-offs. He has significant experience with cross-border transactions and complex partnership and LLC matters.

Mr. Sonnenschein helps clients successfully execute their deals, drawing on his experience handling hundreds of transactions around the globe. His recent work includes major public and private M&A transactions in a variety of industries, including the business services, hospitality, media, energy, manufacturing, telecommunications, aerospace and defense, real estate, technology, and financial sectors.

Mr. Sonnenschein has held numerous leadership positions at Latham & Watkins, including as Global Chair of the Corporate Department, Chair of the Strategic Initiatives Committee, Chair of the Business Development and Investment Committees, and as a member of the Executive Committee.


Mr. Sonnenschein’s recent notable transactions include representing:

  • A global professional services organization in the restructuring of a number of its Latin American firms
  • Sempra Energy in the sale of Sempra Renewables to American Electric Power Company, and the sale of its solar business to Consolidated Edison
  • Aspen Skiing Company in its acquisition together with KSL Capital Partners of Intrawest Resorts Holdings, a North American mountain resort and adventure company; Mammoth Resorts, an owner and operator of mountain resorts in California; and Deer Valley Resort, an owner and operator of a mountain resort in Utah
  • GTCR in a number of transactions, including its:
    • Concurrent acquisitions of The Gemini Companies and Ultimus Fund Solutions in a strategic combination creating a leading independent fund administrator
    • Acquisition of AssuredPartners, one of the largest insurance brokerage firms in the United States
    • Acquisition of Sage Payment Solutions, a provider of payment processing and merchant acquiring solutions
    • Strategic investment in Vivid Seats, an independent marketplace for tickets to live sports, concert, and theater events
    • Strategic investment in RevSpring, a provider of revenue acceleration and accounts receivable management software solutions
    • Equity investment in Zayo Group, a communications infrastructure services provider, in connection with Zayo’s US$2.2 billion acquisition of AboveNet
    • Acquisition of Protection 1, a provider of security alarm monitoring, and its subsequent sale of Protection 1 to Apollo Global Management
  • Integra LifeSciences Holdings Corporation, a developer, manufacturer, and marketer of surgical implants and medical instruments, in its:
    • Acquisition of Derma Sciences, a wound-care medical device company
    • US$1.05 billion acquisition of Johnson & Johnson’s Codman Neurosurgery business, a portfolio of devices focused on advanced hydrocephalus, neuro-critical care, and operative neurosurgery
    • Spin-off of SeaSpine Holdings Corporation, an orthobiologics and spinal fusion hardware company
  • Various clients in a number of transactions involving the hotel sector, including the sale of Outrigger Hotels to KSL; the sale of Kimpton Hotels to the InterContinental Hotel Group; the acquisition by Starwood Capital of TMI Hospitality; and the Reverse Morris Trust transaction between Starwood Hotels & Resorts’ vacation ownership business, Vistana Signature Experiences, and Interval Leisure Group
  • Darden Restaurants in the separation of its Red Lobster business
  • Royal DSM, a Dutch multinational, in its US$2.6 billion transaction involving a cross-border joint venture with JLL Partners to create a leading global contract development and manufacturing organization for the pharmaceutical industry
  • Global Infrastructure Partners (GIP) in a variety of matters, including:
    • Its US$3.13 billion acquisition of EnLink Midstream and EnLink Midstream Partners, providers of midstream energy services
    • Its carve-out gas gathering and processing joint venture with Chesapeake Energy
    • Its US$1.43 billion sale of a 50% interest in Ruby Pipeline, an interstate natural-gas pipeline operator
    • Its acquisition of an interest in Freeport LNG, an operator of liquefied natural gas receiving and regasification terminals
    • The formation, initial public offering, and secondary offerings of Access Midstream Partners
    • Its acquisition (along with The Williams Companies) of significant interests in Access Midstream
    • The US$2.16 billion acquisition by Access Midstream of Chesapeake Midstream Operating, an operator of natural gas pipelines
  • KKR in various matters, including its:
    • Acquisition of Hyperion, a leading manufacturer of industrial tools components, through a carve-out involving multiple jurisdictions across Asia, Europe, Latin America, and North America
    • US$1.12 billion acquisition of Capital Safety Group, a UK-based manufacturer and designer of height safety and fall protection equipment, and its subsequent sale of Capital Safety to 3M
    • US$2.4 billion acquisition of majority ownership of Sedgwick Claims Management Services, a provider of technology-enabled claims and productivity management solutions
    • Acquisition of Alliant Insurance Services, a provider of diversified insurance products and services, and its subsequent sale of a majority interest therein to Stone Point
    • Acquisition of Internet Brands, a provider of vertically focused online media and software services
  • The Carlyle Group in various matters, including:
    • Its US$2.6 billion acquisition of Syniverse Holdings, a provider of technology and business solutions for the global telecommunications industry
    • Its US$1.3 billion take-private acquisition of Open Solutions, a software and financial services company
    • Its acquisition of ARINC, an aviation communications company
    • Its acquisition of Wesco Aircraft, a global distributor of aerospace hardware and provider of inventory management services
    • Wesco Aircraft’s initial public offering and other follow-on transactions, including its acquisition of Haas Group, a provider of chemical supply chain management (CSCM) solutions
  • The Carlyle Group, Riverstone Holdings, and Highstar Capital in connection with the acquisition by Kinder Morgan of El Paso, a natural gas and electricity producer, for a total purchase price, including assumption of debt, of approximately US$38 billion
Mr. Sonnenschein has been described by clients as an “extraordinary lawyer" who is noted for his “efficient and creative advice;” "highly intelligent" and "very commercial,” with “a great demeanor...very straightforward and very smart. Client’s say "he's a deal-maker, a problem solver and he gets to the heart of a matter quickly."Chambers Global, Chambers USA, and The Legal 500 US
Bar Qualification
  • California
  • New York
  • JD, Harvard Law School, 1979
  • AB, Harvard College, 1976
  • Mergers & Acquisitions
  • Corporate Governance
  • Private Equity