TMZ reports Fleetwood cited irreconcilable differences and requested joint legal custody of the couple's 11-year-old twin daughters, Ruby and Tessa. He has not yet filed for divorce.
As for the distribution of wealth, the drummer claims all his premarital musical royalties and memorabilia belong to him.
Frankel was Fleetwood's third wife.
Duggar sisters unveil Christian dating rules in new book
Beautician charged with giving client fatal silicone butt injection