David B. Massey

Photo of David B. MasseyPartner
Previously with The U.S. Department of Justice

I am a litigation partner in the New York office. I chose RK&O to work with Lee Richards, Michael Mann, Dan Zinman and the firm’s many other talented partners after working for nine years as a federal prosecutor in Manhattan. RK&O has proven to be the perfect platform to represent institutions and individuals in complex cross-border white collar matters, which is exactly what I had hoped to do when I left the government.

Since joining RK&O, I have, among other things:

  • Represented a South American sports marketing firm in relation to the 2015 Brooklyn federal (EDNY) prosecution and investigation of FIFA officials and others.
  • Represented several lawyers and lobbyists in connection with a Manhattan federal (SDNY) investigation and prosecution of a prominent New York State legislator in 2015.
  • Represented several executives of global banks in DOJ investigations of foreign exchange trading practices.
  • Represented several sales and trading executives in parallel investigations by the DOJ and SEC relating to fixed-income sales and trading practices.
  • Represented more than 20 executives of global banks in investigations by the DOJ, other agencies, and independent monitors relating to AML and OFAC sanctions compliance.
  • Represented the chief executive officer of a U.S. broker-dealer charged in Manhattan federal court with FCPA violations.
  • Advised two Swiss banks, a Swiss law firm and a Swiss trade association in connection with the DOJ’s amnesty program for Swiss banks.
  • Served as counsel to the Independent Examiner for two Swiss banks in connection with the DOJ’s amnesty program for Swiss banks.
  • Represented a research analyst in a FINRA investigation relating to research independence.
  • Represented a global bank in an SEC investigation of a large industrial company.
  • Conducted an internal investigation for a U.S. bank holding company relating to a cross-border accounting issue.
  • Advised U.S.-based asset management firms in regulatory matters.

I earned a J.D. from Yale Law School, an M. Phil in international relations from Oxford University, and a B.A. summa cum laude from Yale College. After law school, I clerked for the Honorable Pierre N. Leval of the United States Court of Appeals for the Second Circuit.


  • Named a 2015 Trailblazer in white collar criminal defense by The National Law Journal, 2015
  • Selected by Super Lawyers magazine as a New York Super Lawyer for White Collar Criminal Defense, 2015