Kroger Stock Drops as CEO McMullen Resigns Following Conduct Probe

1. Kroger CEO Rodney McMullen resigned after a conduct investigation. 2. Board found McMullen's behavior inconsistent with business ethics policies. 3. Ronald Sargent appointed as interim CEO and board chair. 4. McMullen's actions unrelated to Kroger's financial performance. 5. Kroger shares fell over 1% following the announcement.