John R. Costantino is a Managing General Partner of NGN Capital LLC. He is a lawyer and CPA. John was Managing Tax Partner in the New York office of Touché Ross & Co. and then President of Integrated Resources Acquisition Corporation. He was Chief Operating Officer of Conair Corporation, a large household and personal care company. He was a founding partner of a private equity fund, merchant banking group and co-founded several biotech and medical device companies.

He presently serves as the Independent Chairman of a State Street Coproration fund group which was formerly the General Electric Company's family of mutual funds. He has served and continues to serve on a number of public and private company boards of directors as well as the Boards of a number of charitable organization. He is trustee and tresurer of the Neuroscience Institute and a trustee emeritus of Fordham University and an Advisory board member of the Manhatten Children's Center. He has received the Richard S. Bennett Award for ethics and the Annual Achievement Award from Fordham Law School. He is a member of the St. Augustine High School Hall of fame and was a recipient of the 2006 Ellis Island Medal of Honor. 

John and his wife Barbara live in New York City and have two married children and 5 grandchildren. Barbara has been involved in a number of charitible and educational projects including Regis high school, Fontbonne Hall Academy and the Cabrini Sister's Foundation.