Mr. Greenwald is Senior Advisor to the firm’s executive team in government, community, and media relations.  He is a member of the Investment and ESG Committees.​

He served as Chairman of the Rosslyn Business Improvement District in Arlington, VA for more than a decade and is now Chairman Emeritus and a member of the executive committee.  Mr. Greenwald also served as an Arlington Economic Development Commissioner, as an appointee of the County Board, until the expiration of his term in 2018.  He is Chairman and founding member of the Arlington Foundation for Arts and Innovation, an entity established to spearhead creativity and investment in County cultural activities.  He has spearheaded the Leadership Council of the Watergate complex.  Until the expiration of his term in January 2009, he served on the Executive Committee and Board of the Mount Vernon Triangle Community Improvement District in Washington, DC.​

He founded the New York law firm of Greenwald and Strongin, and is a former partner at Rosenman & Colin, now KMZ Rosenman.  He was Executive Vice President, General Counsel, and Secretary of Retired Persons Services, Inc.​

Mr. Greenwald received his AB and AM from Harvard University and his JD from the New York University School of Law.