SAP chief executive announces retirement Summary: Hasso Plattner, chief executive and co-founder of SAP, announced Thursday that he will step down in May. ZDNet Editor in Chief Dan Farber gets reaction from SAP executive board member Shai Agassi. March 13, 2003 -- 23:25 GMT (15:25 PST) Loading... Please wait. Topic: SAP Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.