Stephan Plenz (40) is to become manager of the Wiesloch site of Heidelberg on April 1, 2006. The current Site Manager, Dieter Stempnewicz (60), is retiring. "For a decade, Dieter Stempnewicz has managed the largest Heidelberg site," said Bernhard Schreier, the company's Chief Executive Officer. "In that time, he has instigated and implemented decisive changes to boost the site’s competitiveness." The Wiesloch factory has around 6,000 employees and covers an area of 860,000 square meter, making it the company's largest production site and the largest and most modern printing press factory in the world. All the company's sheetfed offset presses are assembled in Wiesloch and the small parts and electronic parts required for these presses are produced there. Stephan Plenz has been working for the company since 1986. Following a number of management positions in the Sheetfed Division at the Wiesloch factory, he has worked in various management roles in the Postpress Division since 2001. On February 1, 2005, he took over the role of Assembly and Logistics Manager in Heidelberg's Sheetfed Division at the Wiesloch factory. Stephan Plenz is married with three children. Dieter Stempnewicz joined Heidelberger Druckmaschinen AG in 1997 as Head of Production and Site Manager at Wiesloch, having held various management positions in the aviation industry. Since 2001, he has been responsible for sheetfed offset press production at Heidelberg. Dieter Stempnewicz is married and has two children.