Talent agency Endeavor is set to go private in a $13 billion deal with Silver Lake, its longtime financial backer. Silver Lake will acquire the shares it doesn't already own, valuing Endeavor at $13 billion. The deal will end Endeavor's tough three-year run on the NYSE, with the majority shareholders in the UFC selling to a private equity firm. Additionally, as part of the deal, Patrick Whitesell will launch a new media company with a $250 million investment from Silver Lake, and Endeavor CEO Ari Emanuel will receive a $25 million asset sale transaction bonus and quarterly royalty payments from WME.