No room this summer on David Geffen’s mega-yacht, Rising Sun? Oligarchs and moguls needn’t worry, there’s always July in Sun Valley – Allen & Co.’s annual leadership retreat for media and tech barons in Idaho. The “billionaire summer camp” has long been the scene for trust falls and starry panels, while the real gamesmanship of corporate acquisitions and diplomacy plays out in quaint mountain cabins while private jets idle on the tarmac. Variety has obtained a copy of the 2026 guest list, which