Safra Catz, left, with Larry Ellison CREDIT: AP/Paul Sakuma After former CEO Larry Ellison stepped down from his position at Oracle last week, the company announced two new co-CEOs: Safra Catz and Mark Hurd. Catz’s new role makes her the 25th current female CEO of a Fortune 500 company, which means women hold 5 percent of those positions, the highest level ever reached.