A seasoned executive and entrepreneur, he has held leadership roles in multiple Fortune 500 global public companies. Nierenberg was most recently Senior Vice President of Fleet Services with Avis Budget Group overseeing a fleet of 400,000+ cars and commercial trucks across 100+ maintenance facilities.  Prior to Avis Budget Group, Nierenberg served as part of Hertz Global Holdings’ Senior Management Team with roles as Vice President of Operations and Vice President of Global Fleet for Hertz Equipment Rental Corporation (HERC Equipment Rental).  Prior to HERC, Nierenberg spent 14 years in various roles at Ryder System, Inc. with his last responsibility at Ryder leading the Asset Management and Used Vehicle Sales functions.  Nierenberg began his career as a Certified Public Accountant with Arthur Anderson, LLP.  He holds a M.B.A., a Master of Accounting and a Bachelor of Accounting and Equivalency in Finance from the University of Florida in Gainesville.