John Gutleber

John Gutleber was a native Long Islander with a BBA in Law and Finance and a Masters Degree in Finance from Adelphi University. After working for his family’s real estate firm, Corwin Gutleber Agency, he joined Marine Midland Bank and then rose through the ranks at its successor, HSBC, to become the head of Real Estate Lending for New York, New Jersey, Connecticut, and International Clients. John joined Castagna Realty Company as President in 1988 and was given the additional title of Chief Executive Officer in 1999. Along with Frank Castagna, John oversaw the purchase, development and management of all Castagna Realty commercial, residential and mixed-use properties. In addition to his extensive career in real estate, John was involved with numerous philanthropic organizations. He was a Trustee Emeritus of Adelphi University and a Board Member of the Tilles Center for the Performing Arts, the Viscardi Center and the Arthritis Foundation. He was a former Chairman of the Real Estate Institute at Stony Brook University, a Council Member of Urban Land Institute and a Board Member of the Long Island Association. John was awarded the Brotherhood Award by the National Conference of Christians and Jews. John J. Gutleber passed away on September 7, 2018. He was a mentor, a colleague and a friend to many. He is dearly missed.