BRIEF-Diebold Nixdorf CEO Andy Mattes Steps Down By: Reuters: Company News December 13, 2017 at 07:15 AM EST * DIEBOLD NIXDORF CEO ANDY MATTES STEPS DOWN; CHRISTOPHER CHAPMAN AND JUERGEN WUNRAM TO LEAD OFFICE OF CEO ON INTERIM BASIS Read More >> Related Stocks: Diebold Nixdorf Incorporated