A native Long Islander, John Gutleber received a full scholarship to Adelphi University and graduated in 1968 with a BBA in Law and Finance and a Masters Degree in Finance in 1970.
After graduation, Mr. Gutleber managed the Suffolk county office of his family’s real estate firm, Corwin Gutleber Agency. In 1972, he joined Marine Midland Bank as an Executive Trainee. He rose through the ranks at Marine Midland and its successor HSBC and eventually became head of Real Estate Lending for New York, New Jersey and Connecticut, as well as Real Estate lending to international clients.
In 1988, Mr. Gutleber was named president and in 1999 given the additional title of chief executive officer of Castagna Realty Company, Inc., a real estate development and management firm that developed and manages the Americana Manhasset and Wheatley Plaza shopping centers, as well as office buildings in Nassau County and mixed use properties in New York State.
In addition to his extensive career in real estate, Mr. Gutleber is a Trustee of Adelphi University and a Board Member of the Tilles Center, the Arthritis Foundation, and Chairman of the Real Estate Institute at LIU and the National Center for Disability Services, as well as Corporate Council President of the Nassau County Museum of Art, a Council Member of Urban Land Institute, and is on the Board of Directors of the Dutchess County Economic Development Corporation. Mr. Gutleber has been awarded the Brotherhood Award by the National Conference of Christians and Jews.