Dr. Manfred Schneider
Cologne, Germany
born December 21, 1938
Chairman of the Supervisory Board effective April 2002

• Daimler AG
• Linde AG (Chairman)
• RWE AG (Chairman)
• TUI AG

Thomas de Win
Cologne, Germany
born November 21, 1958
Vice Chairman of the Supervisory Board,Member of the Supervisory Board effective April 2002

Chairman of the Bayer Group Works Council

Chairman of the Bayer Central Works ­Council

• Bayer MaterialScience AG

Dr. Paul Achleitner
Munich, Germany
born September 28, 1956
Member of the Supervisory Board effective April 2002
Member of the Board of Management of Allianz SE

• Allianz Deutschland AG (until the end of June 2010)
• Allianz Global Investors AG
• Allianz Investment Management SE, Chairman of the Board of Directors
• Daimler AG (effective April 2010)
• RWE AG
• Henkel AG & Co. KGaA,
  Shareholders’ ­Committee

André Aich
Berlin, Germany
born February 17, 1969
Member of the Supervisory Board effective April 2007
Member of the Works Council of Bayer Schering Pharma AG *

Willy Beumann
Wuppertal, Germany
born April 12, 1956
Member of the Supervisory Board effective February 2007
Chairman of the Works Council of the Wuppertal site of Bayer

• Bayer Schering Pharma AG *

Dr. Clemens Börsig
Frankfurt am Main, Germany
born July 27, 1948
Member of the Supervisory Board effective April 2007
Chairman of the Supervisory Board of Deutsche Bank AG

• Daimler AG
• Deutsche Bank AG (Chairman)
• Emerson Electric Co.
• Linde AG

Dr.-Ing. Thomas Fischer
Krefeld, Germany
born August 27, 1955
Member of the Supervisory Board effective October 2005
Chairman of the Group Managerial Employees’ Committee of Bayer

• Bayer MaterialScience AG

Peter Hausmann
Winsen an der Aller, Germany
born February 13, 1954
Member of the Supervisory Board effective April 2006
Member of the Executive Committee of  the German Mining, Chemical and Energy Industrial Union

• Evonik Services GmbH

Prof. Dr.-Ing. e.h. Hans-Olaf Henkel
Berlin, Germany
born March 14, 1940
Member of the Supervisory Board effective April 2002
Honorary Professor at the University of Mannheim

• Continental AG
• Daimler Luft- und Raumfahrt Holding AG
• Heliad Equity Partners GmbH & Co. KGaA
• Ringier AG
• SMS GmbH

Reiner Hoffmann
Brussels, Belgium
born May 30, 1955
Member of the Supervisory Board effective October 2006
North Rhine District Secretary of the ­German Mining, Chemical and Energy ­Industrial Union

• Evonik Services GmbH (effective September 2010)
• SASOL Germany GmbH

Dr. rer. pol. Klaus Kleinfeld
New York, U.S.A.
born November 6, 1957
Member of the Supervisory Board effective April 2005
Chairman and Chief Executive Officer of ALCOA Inc.

Petra Kronen
Krefeld, Germany
born August 22, 1964
Member of the Supervisory Board effective July 2000
Chairman of the Works Council of the Uerdingen site of Bayer

• Bayer MaterialScience AG (Vice Chair­man)

Dr. rer. nat. Helmut Panke
Munich, Germany
born August 31, 1946
Member of the Supervisory Board effective April 2007
Member of various supervisory boards

• Microsoft Corporation
• Singapore Airlines Limited
• UBS AG

Hubertus Schmoldt
Soltau, Germany
born January 14, 1945
Member of the Supervisory Board effective January 1995
Member of various supervisory boards

• BP Europe SE (formerly Deutsche BP AG) (Vice Chairman until May 2010)
• Dow Olefinverbund GmbH (Vice Chairman)
• E.ON AG
• RAG AG (Vice Chairman)
• RAG Deutsche Steinkohle AG (Vice Chairman)

Dr.-ing. Ekkehard d. Schulz
Krefeld, Germany
born July 24, 1941
Member of the Supervisory Board effective April 2005
Chairman of the Executive Board of ThyssenKrupp AG

• AXA Konzern AG
• MAN SE (Vice Chairman)
• RWE AG
• ThyssenKrupp Elevator AG (Chairman)
• ThyssenKrupp Steel Europe AG (Chairman)

Dr. Klaus Sturany**
Dortmund, Germany
born October 23, 1946
Member of the Supervisory Board effective April 2007
Member of various supervisory boards

• Hannover Rückversicherung AG
• Heidelberger Druckmaschinen AG
• Österreichische Industrieholding AG
• Sulzer AG

Roswitha Süßelbeck
Leichlingen, Germany
born March 19, 1954
Member of the Supervisory Board effective July 2010
Vice Chairman of the Works Council of the Leverkusen site of Bayer

• Bayer CropScience AG (Vice Chairman effective December 2010)

Dipl.-ing. Dr.-ing. e.h. Jürgen Weber
Hamburg, Germany
born October 17, 1941
Member of the Supervisory Board effective April 2003
Chairman of the Supervisory Board of ­Deutsche Lufthansa AG

• Allianz Lebensversicherungs-AG
• Deutsche Lufthansa AG (Chairman)
• Loyalty Partner GmbH (Chairman)
• Tetra Laval Group
• Voith GmbH
• Willy Bogner GmbH & Co. KGaA (Chairman)

Prof. Dr. Dr. h.c. Ernst-Ludwig Winnacker
Munich, Germany
born July 26, 1941
Member of the Supervisory Board effective April 1997
Secretary General of the Human Frontier
Science Program, Strasbourg

• Medigene AG (Chairman)
• Wacker Chemie AG

Oliver Zühlke
Solingen, Germany
born December 11, 1968
Member of the Supervisory Board effective April 2007
Chairman of the Works Council of the Leverkusen site of Bayer
Chairman of the Bayer European Forum

Karl-Josef Ellrich
Dormagen, Germany
born October 5, 1949
Member of the Supervisory Board until the end of June 2010
Chairman of the Bayer Group Works Council (until the end of May 2010)
Chairman of the Works Council of the Dormagen site of Bayer (until January 2010)

• Bayer CropScience AG (Vice Chairman until the end of June 2010)