Cyril T. Brennan

Cyril T. Brennan


Cyril (Cy) Brennan focuses his practice on international trade regulation and compliance, with an emphasis on U.S. export controls and economic sanctions. Cy handles matters regarding the International Traffic in Arms Regulations (ITAR), the Export Administration Regulations (EAR), U.S. sanctions programs administered by the Treasury Department’s Office of Foreign Assets Control (OFAC) and the Department of Commerce’s anti-boycott regulations. In addition, he represents clients before the Committee on Foreign Investment in the United States (CFIUS), and advises clients on the Foreign Corrupt Practices Act (FCPA), the foreign direct investment reporting requirements of the Bureau of Economic Analysis (BEA), and other trade and investment-related regulations in the context of mergers and acquisitions.


  • Export controls and economic sanctions
  • Committee on Foreign Investment in the United States (CFIUS)
  • Anticorruption compliance
  • Foreign direct investment reporting
  • Regulatory due diligence
  • Foreign ownership, control or influence (FOCI)
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Recognition & Leadership

  • Team Member, "Corporate & Finance - International Counsel in Latin America (Florida-Based)," Chambers Latin America Awards, 2017
  • Member, American Bar Association
    • Steering Committee, Aerospace & Defense Industries Committee, Section of International Law and Practice (2014-2015)


  • J.D., Northwestern Pritzker School of Law, 2008
    • Senior Editor, Northwestern Journal of International Law and Business
  • B.A., cum laude, Yale University, 2003
  • District of Columbia
  • Illinois
  • French, Conversational
  • Spanish, Conversational