If Relativity Media goes public — something that CEO Ryan Kavanaugh says he’s exploring — it will be interesting to see exactly who owns and and controls what at the upstart movie, TV, and sports management company. It’s a black box to outsiders, and today’s announcement only sheds a little light: Relativity says that OneWest Bank Group and Dune Capital Management founder Steven Mnuchin is now its co-chairman after joining Kavanaugh and “a small group of investors” to buy Elliott Management’s “significant ownership stake of Relativity debt and equity securities.” In the end, Kavanaugh will still be the company’s largest individual shareholder with a right to appoint a majority of the board. And Elliott will remain a minority investor. The privately held company declined to offer financial details.

Steven MnuchinMnuchin is a familiar presence in Hollywood. The former partner at Goldman Sachs helped to finance movies including Gravity, The LEGO Movie, Avatar, and Life of Pi. He’s also part of the RatPac-Dune Entertainment partnership that just made a multi-year agreement to co-finance as many as 75 upcoming Warner Bros. titles at up to $450 million. “I personally recruited him to join our board,” Kavanaugh says. “He brings an unrivaled perspective on the ever-increasing value of content in Hollywood and Wall Street, and his experience will prove invaluable as we continue moving toward an IPO.”

The Yucapia Companies’ billionaire co-founder Ron Burkle — a member of the Relativity board — also blessed the arrangement. “Ryan is a visionary leader and Steven brings extensive expertise to our company,” he says. “We will all benefit from the combined experience, knowledge and relationships possessed by Ryan and Steven.”