The Fargo actor filed papers yesterday citing irreconcilable differences as the reason for their split, according to court documents obtained by TMZ.
He has also asked for joint custody of their three children: Clara, 21, Jamyan, 16, Esther, 15 and Anouk, 6.
According to the publication, Eve, a production designer, filed a response asking or sole custody with visitation for her former husband.
The documents also listed the date of separation as May 28 2017.
Last October, the couple announced their split amidst rumours that Ewan had been spotted kissing his Fargo costar Mary Elizabeth Winstead.
The pair went public with their new romance in Novemember when they were spotted in public holding hands.