Peter Sullivan was born in Shrewsbury, Massachusetts and graduated from New York University's Tisch School of the Arts with a degree in Film and Television. After making the move to Los Angeles, he worked his way up the development ranks at Paramount, Artisan Television, and Hearst Entertainment. Since becoming Vice President of the production company Hybrid LLC in 2007, Sullivan has co-produced over 100 films. In addition to producing and writing, Sullivan has directed forty films himself, including "SECRET OBSESSION," which, with over 40 million viewers in its first 28 days, was one of the top 10 most viewed Netflix Originals ever; and the romantic comedy "CHRISTMAS UNDER WRAPS," which remains the highest rated program in Hallmark Channel history. In 2022, he directed the first original movie for Amazon's Freevee platform, "LOVE ACCIDENTALLY," starring Brenda Song and Denise Richards.

Some of his other notable works include the Netflix original feature "FATAL AFFAIR," starring Nia Long and Omar Epps; the Lionsgate release "THE SANDMAN," executive produced by Stan Lee and starring Tobin Bell from the "Saw" franchise; the Sony Pictures release "OMINOUS," starring Barry Watson; and Universal Pictures' "CUCUY: THE BOOGEYMAN" with Marisol Nichols and Brian Krause.

Severely hard of hearing since birth, Sullivan has recognized a need to provide a platform for filmmakers and artists with disabilities. In addition to teaching screenwriting at Culver City High School, he is also teaching masterclasses on writing and direction with Stage 32.