In 2015, Grinspoon and wife Diane Troderman signed The Giving Pledge, and joined a growing list of leading philanthropists who have made a commitment to dedicate at least 50% of their wealth to philanthropy.
[9] His first entrepreneurial pursuit was at Marlboro; he purchased a used Maytag washer, and operated a coin-operated laundry machine in the basement of the college.
He left Marlboro after 2 ½ years at the age of 21 to manage a fleet of ice cream trucks for Howard Johnson's, but was soon drafted into active duty in the Navy.
[11] Subsequently, he founded the business that would one day become Aspen Square Management, currently one of the top 50 privately held national real estate firms.
[18] The foundation’s many other programs include funding and professional development for non-profit Jewish summer camps through “J-Camp 180,”[19] and tuition incentive grants for families with children attending participating local schools.
[20] Through HGF’s "Life & Legacy" program that encourages future giving in wills and estate planning, Jewish communities around the country have raised a billion dollars to date.