One half of the production team, "Brillstein-Grey Productions". His
partner is Brad Grey.
Had daughter Leigh Brillstein with his first wife. Had son Michael Brillstein and daughter Kate Brillstein with his second wife, Deborah. Sons David Koskoff and Nick Koskoff are Deborah's children from a former marriage. Has a grandson, Alden.
Born in Manhattan to Moe and Tillie Brillstein. Growing up, his family lived with his uncle, Ziegfield Follies star Jack Pearl.
Received a degree in advertising from New York University.
Began his career in the mail-room at the William Morris agency.