General Motors Co has pushed its IPO filing to early next week as it updates its prospectus with the recent CEO change and a management risk factor, a source familiar with the situation said on Friday.

The filing with the U.S. Securities and Exchange Commission was originally scheduled for Friday. Chief Executive Ed Whitacre said on Thursday that he would step down and Dan Akerson would take over effective September.

The person declined to be named because the preparations for the IPO are not public.