1979 Diploma in Industrial Engineering and Business Administration (Karlsruhe Technical University)

1982 Doctorate in Engineering (Berlin Technical University)

1982 Corporate Planning, Mannesmann Demag AG, Duisburg

1984 Head of Finance and Accounting, Mannesmann Demag (Pty.) Ltd. Johannesburg/South Africa

1988 Group Accounting, Mannesmann AG, Düsseldorf

1993 Head of Controlling and Accounting, Mannesmann Demag AG, Duisburg

1996 Commercial Managing Director, Mannesmann Demag Metallurgy, Duisburg

1997 Executive Board Member and CFO, Krauss-Maffei AG, Munich

1999 Executive Board Member and CFO, Mannesmann AG and Atecs Mannesmann AG, Düsseldorf

2001 Member of the Executive Board, Wacker-Chemie GmbH, Munich

since November 2005 (change in company’s legal form), member of the Executive Board of Wacker Chemie AG