Alexander David Greene occupies the position of Chairman of USA Truck, Inc. and President for Armonk Independent Fire Co. Mr. Greene is also on the board of Natural Resource Partners LP, Ambac Assurance Corp., GP Natural Resource Partners LLC and Element Fleet Management Corp. and Member of Armonk Fire Department.

In the past he was Managing Partner & Head-US Private Equity at Brookfield Asset Management, Inc. and Managing Partner at Brookfield Asset Management PIC Canada LP (a subsidiary of Brookfield Asset Management, Inc.), Managing Director at Wasserstein Perella & Co., Inc., Managing Director at Whitman Heffernan Rhein & Co., Inc., Director at Modular Space LLC, Principal at Gleacher & Co. LLC, Principal at Etico Partners LLC, Principal at Manufacturers Hanover Trust Co., Managing Director at The Carlyle Group LP (Corporate Private Equity) and Principal at The Tourette Association of America.

He received an undergraduate degree from George Washington University.