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Adam Siegel


Adam is a partner based in our New York office and the co-head of our global investigations practice.





A partner in our litigation practice, Adam represents clients facing government investigations and related civil litigation. Clients in a broad range of industries rely on him to defend them in investigations conducted by the US Department of Justice (DOJ), the Securities and Exchange Commission (SEC) and the State Attorneys General in matters involving alleged violations of the Foreign Corrupt Practices Act, the US tax laws, accounting and securities fraud and other issues. He also conducts internal investigations on behalf of clients in a wide range of industries.
Adam works regularly with other firm lawyers around the world, defending multijurisdictional investigations, developing compliance and training programs tailored to the global regulatory regimes faced by clients, and conducting due diligence regarding bribery and other risks in corporate transactions.

“Adam Siegel is a ‘very thoughtful and knowledgeable’ litigator and a ‘real expert in his field,’ according to impressed commentators."
Chambers USA 2016
“Adam Siegel is characterized by sources as ‘extraordinarily bright - a brilliant writer and thinker.’”
Chambers USA 2014
“Enters the rankings on the back of praise for his broad-based expertise in government investigations. His experience spans a wide range of matters, including investigations concerning FCPA violations and insider trading.”
Chambers USA 2013
“ ... competitors mention Adam Siegel as ‘a great, honest and good-natured litigator’ for his practice advising clients that face government investigation and related civil litigation. Siegel has defended clients in a broad range of industries in investigations conducted by the US Department of Justice, the SEC and the State Attorneys General.”
Euromoney’s Benchmark: America’s Leading Litigation Firms and Attorneys 2010

Recent deals/Highlights

  • Defending a multinational pharmaceutical company in an inquiry conducted by the DOJ and SEC into relationships with officials in countries in Europe, Africa, Asia and Latin America.
  • Conducting an internal investigation for a multinational manufacturing company involving allegations concerning its sales agents throughout the Middle East.
  • Defending the European affiliate of a Big Four accounting firm in an investigation by the SEC and the Public Company Accounting Oversight Board (PCAOB) regarding the audit of a client.
  • Serving as global anticorruption compliance counsel for a multinational consumer products company, responsible for policy review and development, strategic advice and the conduct of investigations.

Career to date

Adam was an Assistant US Attorney in the Criminal Division of the US Attorney’s Office for the Southern District of New York. There he served as Deputy Chief and Chief Appellate Attorney.

Qualifications and education

Adam received his JD, magna cum laude, from Harvard Law School and his AB, magna cum laude, from Harvard University. He is admitted to practice in the State of New York.
  • New York

  • 601 Lexington Avenue
  • 31st Floor
  • New York, NY
  • 10022
  • T +1 212 277 4000
  • F +1 212 277 4001

    Direct line
    T +1 212 277 4032
    F +1 646 521 5632

  • adam.siegel@freshfields.com
  • vCard (Download Adam's contact details)
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