Managing Partners Managing Directors Senior Advisor Advisory Directors Directors Principals Associates Finance & Administration
  • John Clarke
    Controller
  • Scott Parkis
    Director, Information Technology
  • Anne Savit
    Manager, Finance & Administration
  • Francine Vitale
    Manager, Compliance & Administration
Executive Assistants
  • Peggy Conway
  • Sofia Hodza
  • Barbara Palmer
  • Michelle Rudolph
Executive Council
  • Gerald Greenwald (Chair)
    Former CEO & Chairman, United Airlines, Inc.
  • Norman R. Augustine
    Former CEO & Chairman, Lockheed Martin Corporation
  • Michael L. Eskew
    Former CEO & Chairman, United Parcel Service, Inc.
  • Sir John Rose
    Former CEO, Rolls-Royce plc
  • Tim Solso
    Former CEO & Chairman, Cummins, Inc.

Nathan Irwin
Principal
vCard

Mr. Irwin joined Greenbriar in 2013. Prior to joining Greenbriar, he worked in the Global Industrials Group at Credit Suisse.

  • Representative Prior Portfolio Company Experience
  • PetroChoice Holdings, Inc.
  • Education
  • Arizona State University, BS

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