Mr. Harrington currently serves as Executive Chairman of Parsons Corporation, a digitally enabled solutions provider in diverse markets with a focus on security, defense and infrastructure. Mr. Harrington previously served as Chairman, Chief Executive Officer and President of Parsons Corporation from April 2008 until he retired in July 2021. Mr. Harrington served in multiple roles at Parsons Corporation including Chief Financial Officer, Group President, Biotechnology, Semiconductors and Telecommunications along with other roles of increasing responsibility and scope. Mr. Harrington currently serves as a Board member of J.G. Boswell Company and Constellation Energy Corporation and as Vice Chairman of the Cal Poly Foundation.