A Los Angeles Police Department source told People that the cause of death is unclear.

Although Gesser didn't have a character named after him in "Wolf on Wall Street," the former hedge-fund manager served as an advisor to Belfort in real life. He also served as a consultant to director Martin Scorsese and actor Jonah Hill in the 2013 film.

"Wolf of Wall Street" starred Leonardo DiCaprio as Jordan Belfort, an infamous stockbroker involved in the "pump and dump" fraud scheme.

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Pat Epps founded Epps Air Service with his brothers at DeKalb-Peachtree Airport in 1965. The fixed-base operator sold, fueled, chartered, stored and managed airplanes at the airport as Epps Aviation until it was sold in 2023. (Courtesy of the Epps family)

Credit: Epps Family

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Carleigh Knight (left) and her sister, Natalie Rogovin, look at Christmas ornaments while shopping at Kudzu Antiques + Modern in Decatur on Tuesday, Nov. 25, 2025. (Natrice Miller/AJC)

Credit: Natrice Miller