Managing Partners Managing Directors Operating Partners Senior Advisers Directors Principal Senior Associates Associates Retired Co-Founder
  • Joel S. Beckman
Executive Council
  • Gerald Greenwald (Chair)
    Former Chairman & CEO, United Airlines
  • Norman R. Augustine
    Former CEO & Chairman, Lockheed Martin
  • Michael L. Eskew
    Former CEO & Chairman, United Parcel Service
  • Douglas R. Oberhelman
    Former CEO & Executive Chairman, Caterpillar
  • Sir John Rose
    Former CEO, Rolls-Royce
  • Tim Solso
    Former CEO & Chairman, Cummins
Finance & Administration
  • John Clarke
    Vice President, Finance
  • Scott Parkis
    Vice President, Technology
  • Anne Savit
    Manager, Finance & Administration
  • Francine Vitale
    Manager, Compliance & Administration
Executive Assistants
  • Aimee Bester
  • Peggy Conway
  • Sofia Hodza
  • Barbara Palmer

Nathan Irwin
Director
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
  • AerGen Leasing
  • Ardmore Shipholding
  • Lazer Spot
  • Nordco
  • PetroChoice
  • Education
  • Arizona State University, BS

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