Over a period of more than 30 years, both in the United States and in Europe, Andrew (“Andy”) Sommer represented private equity firms, financial service and other companies and their boards of directors on domestic and international acquisitions, dispositions, capital markets transactions and joint ventures.

Mr. Sommer is a retired partner and currently of counsel to the firm. He joined Debevoise in 1983 and became a partner in 1991 and the firm’s General Counsel in 2011. Mr. Sommer was based for more than eight years in the firm’s European offices. From 2000 to 2005, he served as the Managing Partner in the London office. He received his J.D. cum laude from New York University in 1983, where he was a member of the Order of the Coif and of the Journal of International Law and Politics, and received his A.B. from Brown University in 1978. From 1978 to 1980, Mr. Sommer was the Press Officer/Editor of the U.S. Helsinki Watch Committee.

Mr. Sommer has been a frequent author and speaker on legal developments affecting the private equity and insurance industries. He is a contributing author of The Private Equity Primer: The Best of the Debevoise & Plimpton Private Equity Report and the Debevoise & Plimpton Private Equity Report. Publications include “Seeing Through SWFs,” The Deal (January 2009), “Insurance Sidecars,” Private Equity Manager (October 2006), “Welcome to the Club,” The Deal (June 2006), “Vendor Due Diligence Reports -- Is It ‘Put Up or Shut Up’ for Buyers in Europe?,” The M&A Lawyer (January 2006) and “Private Equity Investments in Insurance Companies,” Insurance and Investment Management M&A (2008).


  • New York University School of Law, 1983, J.D.
  • Brown University, 1978, A.B.

Bar Admissions

  • New York