Annapurna International’s Kimberly Fox is joining Marc Butan’s MadRiver Pictures as a partner and launching a new international sales arm. The new division will handle sales and distribution on all MadRiver films as well as films from Vendian Entertainment, which has made a strategic investment in MadRiver. Separately, Fox will continue to run Megan Ellison’s Annapurna International label and rep all of Annapurna’s titles internationally.

Word of Fox’s new venture was being whispered around Sundance. The confirmation today sets up the new venture ahead of the European Film Market in Berlin next week. CAA advised MadRiver and arranged financing for the deal.

Annapurna’s current slate is comprised of Richard Linklater’s Everybody Wants Some, Todd Solondz’s Wiener-Dog, which Amazon Studios acquired out of Sundance, as well as Ana Lily Amirpour’s The Bad Batch, Mike Mills’ 2oth Century Women and the Seth Rogen- and Evan Goldberg-penned Sausage Party.

“It has been an extraordinary four years with Annapurna,” said Fox, “and I am honored that Megan is affording me the opportunity to dually embark on an exciting new venture while continuing to represent her diverse and intelligent slate of films. I cherish my relationship with the Annapurna team, whom I deeply respect and have come to think of as my family.”

“Kim has a proven track record working with prominent filmmakers and talent on films including Kathryn Bigelow’s Zero Dark Thirty, David O. Russell’s American Hustle and Bennett Miller’s Foxcatcher,” said Butan. “Her experience, our experience working together and her deep buyer relationships made her the natural choice as we build out MadRiver’s financing and distribution capabilities.”

MadRiver’s upcoming slate includes Burr Steers’ Pride And Prejudice And Zombies and John Hillocat’s Triple 9 starring Chiwetel Ejiofor, Casey Affleck and Woody Harrelson.