Kimberly Buffington-Quaid and Dennis Quaid
03/09/2012 at 02:25 PM EST
Dennis Quaid's wife, Kimberly Buffington-Quaid, is ending their marriage.
According to court papers obtained by TMZ.com
, Buffington-Quaid says she is filing for divorce because things have "become insupportable because of discord or conflict of personalities."
In a statement released to Extra
on Friday a rep for the actor said, "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."
The couple, who wed in 2004
, have 4-year-old twins
, Thomas Boone and Zoe Grace together.
Born in 2007, the babies nearly died
when they were given an overdose of heparin at a Cedars-Sinai Medical Center in Los Angeles. The Quaids later sued the hospital and drug manufacturer
and were awarded $750,000
A temporary custody order indicates that the couple will share custody of the twins.
Buffington-Quaid has been granted possession of the family's main house and a Mercedes, while Quaid, 57, gets a condo and a Cadillac, according to the filing. The couple will share a Range Rover.
Last October, Quaid put his 418-acre Montana property
on the market for $14 million.
This was the third marriage for Quaid, who divorced Meg Ryan
in 2001 and actress P.J. Soles in 1983.