John Kosmidis

John F. Kosmidis

Baker & McKenzie LLP


John F. Kosmidis is a partner in Baker McKenzie’s North America Compliance & Investigations Practice Group. Prior to joining the Firm, Mr. Kosmidis served as an intern at the Division of Enforcement of the New York Stock Exchange and as a research associate at Harvard Business School.

Practice Focus

Mr. Kosmidis focuses his practice in the areas of international internal investigations, particularly anti-corruption and anti-fraud, and securities litigation. He advises clients on disclosures to the government, efficient e-Discovery, and multijurisdictional investigations.

Representative Legal Matters

  • Conducted an internal investigation for a US multinational construction company related to corruption allegations in its Middle East operations.

  • Handled an internal investigation for a US multinational commodities company related to global corruption allegations.

  • Assisted in an internal investigation for a Swiss bank in response to a US-Swizterland Program run by the US Department of Justice relating to resolving US criminal tax allegations.

  • Conducted an internal investigation for a major real estate technology company into mortgage-related fraud allegations.

  • Assisted a Brazilian company in responding to US Department of Justice and Securities & Exchange Commission inquries into world-wide corruption allegations.

  • Represented former officer and director of multinational insurance company in a securities class action litigation.

  • Acted for an individual in a Martin Act action by the New York State Attorney General.

  • Represented an individual in consolidated Delaware derivative litigation alleging breach of fiduciary duty.

  • Assisted a major telecommunications company in federal securities class action litigation.

  • Assisted a major telecommunications company in Delaware breach of fiducary duty litigation.


  • District of Columbia~United States (2013)
  • New York~United States (2007)


  • Georgetown University Law Center (J.D. Honors) (2006)
  • Harvard College (B.A. Economics Honors) (2001)


  • English