Mr. Gerstein is ranked as a leading Corporate/M&A lawyer and noted as a “superb negotiator" and "a great communicator with phenomenal commercial skills."Chambers USA

Mark D. Gerstein

Chicago | New York
  • 330 North Wabash Avenue, Suite 2800
  • Chicago, IL 60611
  • USA

Mark D. Gerstein is a global Chair of the firm’s Mergers & Acquisitions Practice. His practice focuses on mergers and acquisitions, both in the US and globally, corporate governance (including in the restructuring context) and takeover defense planning. He has frequently represented special committees of boards of directors, bidders and financial advisors in going-private and other conflict of interest transactions. His experience also includes advancing and defending both friendly and unsolicited tender offers and he has similarly represented both insurgents and management in proxy contests for the control of public companies. 

Mr. Gerstein has provided mergers and acquisitions counseling to numerous public and private companies, including A.O. Smith, Delphi Automotive, GATX Corporation, Host Hotels and Resorts (a public REIT), IDEX Corporation, Koch Industries, Libbey Inc., Orbitz Worldwide Inc., QEP Resources, Inc., Simon Property Group and The Toro Company. Mr. Gerstein also advises lenders and financial advisors in financial and strategic acquisitions.

 Mr. Gerstein served as an adjunct faculty member of the Northwestern University School of Law and he serves on the executive committee of Northwestern University’s Ray Garrett Jr. Corporate and Securities Law Institute and was the chair of its 2007 program.

Mr. Gerstein serves on the Board of Trustees of Ravinia Festival and is a current member and past Chair of the Board of Directors of Youth Guidance, which serves at-risk children in the Chicago Public Schools.

Mr. Gerstein’s M&A transactions include:

  • Omnicom Group in its US$35.1 billion merger with Publicis Groupe, two leading public relations companies, to create a best-in-class communications, advertising, marketing and digital services company (deal ultimately withdrawn)
  • Koch Industries, Inc.’s US$22 billion acquisition of Georgia-Pacific Corp., the second largest going-private in US history
  • Sirona Dental Systems, Inc. in its US$13+ billion merger of equals with DENTSPLY International Inc.
  • The Special Committee of the Board of Directors of the Chicago Board of Trade in connection with its US$12 billion merger with the Chicago Mercantile Exchange (including the intervening unsolicited offer from the International Commodities Exchange)
  • The US$10 billion acquisition by Energy Transfer Equity, L.P., of Southern Union Company, a diversified natural gas company
  • Koch Industries in its US$7.2 billion acquisition of Molex Incorporated, a designer and manufacturer of electronic components
  • The acquisition by affiliates of Koch Industries of INVISTA from DuPont in a US$4.4 billion transaction
  • Host Marriott Corporation’s US$4.1 billion acquisition of Starwood Hotels’ REIT and related properties
  • Nicor Gas in its US$3.2 billion combination with AGL Group
  • Globe Specialty Metals in its US$3.1 billion merger of equals with Grupo FerroAtlantica to create a leading international silicon and specialty metals producer
  • CNH Global N.V., an agricultural and construction equipment company in the US$3 billion acquisition by Fiat Industrial SpA
  • Orbitz Worldwide, Inc. in its US$1.6 billion sale to Expedia
  • Delphi Automotive, an automotive parts manufacturer, in its US$727 million sale of its thermal systems business to MAHLE