Leonard Stern originally joined his family’s pet product business in 1959 and quickly expanded it before moving into buying and selling land. By the time he sold the pet company in 2000 for $350M, it was the largest pet supplies company in the USA. Now a real estate magnate, Leonard’s Hartz Mountain Industry owns more than 37M SF in New Jersey and New York, as well as the Chicago luxury tower One Superior Place.
He’s also a philanthropist for Jewish causes. In 2014, he backed a comprehensive poll of anti-Semitism in 102 countries and territories and in 2011, and he helped publish the book “A Convenient Hatred: The History of Anti-Semitism.” Leonard founded the nonprofit Homes For the Homeless, and a $30M donation to NYU in 1988 got the prestigious Stern Business School named after him.