Thomas Tull (born 1970) is an American businessman and film producer. He is the former chairman of the Board and chief executive officer (CEO) of Legendary Entertainment. His firm has produced and/or financed several major motion pictures, including "The Dark Knight Trilogy", "The Hangover" and its sequels, "300", "Man of Steel" and others.
Thomas Tull has been working with legendary entertainment since 1974. 
There is no way Thomas Tull has worked with a production company since he was four years old.