Actor Dennis Quaid and third wife Kimberley Buffington are splitting after Buffington filed for divorce, the actor's spokeswoman said on Friday. “We can confirm that Kimberley Quaid has filed for divorce. Contrary to what has been reported, a satisfactory settlement is being worked out for both parties,” Quaid's spokeswoman said in a statement, adding no further details would be provided on this “private matter.” Quaid, 57, married Texas real-estate agent Buffington in 2004, and the couple had twins Thomas Boone and Zoe Grace in 2007 via a surrogate.