Gap widened its fourth-quarter loss along with announcing several executive leadership changes. Mary Beth Laughton, president and CEO of Athleta, is exiting the business, effective March 9. The company also announced that Sheila Peters, chief people officer, will leave the company at the end of the year. The struggling retailer is still without a permanent CEO. Executive Chairman Bob Martin was named interim CEO in July following the abrupt departure of Sonia Syngal.