EXCLUSIVE: Lit agent David Kopple is leaving Gersh to join CAA, I’m told. Kopple’s list includes Marc Webb, the (500) Days of Summer director who’s currently helming the 3D Spider-Man reboot for Sony Pictures Entertainment. Kopple also repped Dan Mazeau, Jose Padilha, Will McCormack and a host of other writers and directors. CAA wouldn’t comment on his pending appointment or which clients will join him.