Gregory Vianesi

Gregory Vianesi

Associate, White Collar Defense and Investigations


Gregory Vianesi advises corporations in connection with complex cross-border compliance and enforcement matters, including proceedings involving French and U.S. regulatory agencies and issues relating to economic sanctions, corruption, money laundering and terrorism financing.

Mr. Vianesi regularly counsels international clients on the development and implementation of compliance programs. He also assists clients in fulfilling their obligations as part of settlement agreements entered into with regulatory agencies.

In addition, Mr. Vianesi advises French and U.S. corporates on EU sanctions and export control rules, including on sanctions involving Russia and the EU dual-use regulation.

His experience includes, among others, representing:

  • a major French financial services company and its parent company in connection with the resolution of a seven-year investigation by various U.S. authorities into its historical compliance with U.S. economic sanctions laws
  • a global financial institution regarding the application of U.S. economic sanctions laws to certain wealth management accounts and transactions
  • a major global payments company in a multijurisdictional internal investigation, voluntary disclosure and settlement negotiations with the U.S. Office of Foreign Assets Control regarding the company’s compliance with U.S. economic sanctions laws involving Iran and other countries
  • a multinational investment bank in successfully resolving long-standing investigations by the U.S. Department of Justice (DOJ) and the U.S. Commodity Futures Trading Commission into certain of the company’s interbank offered rate submissions. Mr. Vianesi also advised the company regarding DOJ and French Parquet National Financier investigations into violations of the U.S. Foreign Corrupt Practices Act and French anti-corruption laws in connection with historical conduct involving Libyan counterparties

Mr. Vianesi joined the firm after spending more than two years working for a large French bank in New York and Paris. He also serves as an officer (reservist) in the French navy.



  • Post-Master’s Degree, University of Paris II - Pantheon Assas, 2010
  • Master’s Degree, University of Paris V - Rene Descartes, 2009
  • Master’s Degree, Université de Bretagne Occidentale, 2008
  • MSc in Management - Grande Ecole Program, ESSEC Business School, 2015


  • French
  • English

Gregory Vianesi

Associate, White Collar Defense and Investigations