Matt Damon is set to reprise his role as forgetful hitman Jason Bourne in a fourth action movie. The movie star hinted 2007's The Bourne Ultimatum would be his third and final film in the franchise, but, a day after that film picked up three Oscars for Best Sound Editing, Best Sound Mixing and Best Film Editing, movie executives have announced he'll be back as Bourne. British moviemaker Paul Greengrass, who directed the two Bourne sequels, will also be back for the fourth installment.