Fremont was born the son of two artists in San Diego and raised in Los Angeles.[1]
In August 1969, Fremont visited New York for the first time and dropped by Andy Warhol's studio, the Factory, with some friends.[1] Fremont was impressed by "'the brilliance of Andy Warhol's vision' and was determined to become part of it."[1] He eventually moved to New York and was hired full-time at the Factory in 1971.[2] He started "at the bottom" by sweeping the floors, answering the phone, and running film cans up to the lab.[1] As Warhol became more fascinated with documenting his daily life, Fremont was tasked with videotaping the ongoing activity at the Factory.[3] Fremont also managed Warhol's rental property at his Eothen estate in Montauk, New York.[4]
By the late 1970s, Fremont had become the vice president of Andy Warhol Enterprises.[5] He produced Andy Warhol's TV (1980–83) and Andy Warhol's Fifteen Minutes (1985–87).[6] Following Warhol's death in 1987, Fremont was a founding director of the Warhol Foundation.[7] From 1987 to 2010, he was also the foundation's sales agent.[7][6] He was briefly a board member for the Andy Warhol Art Authentication Board.[8]
Fremont was an associate producer of the 1989 film Slaves of New York, adapted from the short story collection of the same name by Tama Janowitz.[9] Fremont and his wife Shelly Dunn Fremont co-directed and co-produced Pie in the Sky: The Brigid Berlin Story (2000), a biopic on the Warhol superstar Brigid Berlin.[10][11]
In 2016, Fremont was named CEO of ARTnews, Ltd, the parent company of ARTnews, Art in America, The Magazine Antiques, and Modern.[12] He stepped down from the executive position in 2017 but stayed on as an advisor to the company.[13]
In 2017, Fremont and Shelly were honored for their philanthropy at Artwalk, an annual event supporting the homeless in New York.[14] Their friend, the frontwoman of Blondie, Debbie Harry presented the award to them.[15]
Fremont and Shelly were among the on-screen interviewees in the 2022 Netflix docuseries The Andy Warhol Diaries.[16]