Executive Board

As of December 31, 2010

Dr. Rudolf Staudigl

President & CEO

SILTRONIC
Executive Personnel Corporate Development
Corporate Communications
Investor Relations
Corporate Auditing
Legal & Insurance
Compliance

Chairman of the Supervisory Board
Siltronic AG**
Pensionskasse der Wacker Chemie VVaG
Member of the Supervisory Board
Groz-Beckert KG
Member of the Advisory Council
Deutsche Bank AG
Chairman of Bayerische Chemieverbände

Dr. Joachim Rauhut

WACKER POLYSILICON
Corporate Accounting
Corporate Controlling
Corporate Finance
Information Technology
Raw Materials Procurement
Technical Procurement & Logistics Tax
Region: The Americas

Member of the Supervisory Board
Siltronic AG**
Pensionskasse der Wacker Chemie VVaG
MTU Aero Engines Holding AG
MTU Aero Engines GmbH
Member of the Advisory Council
J. Heinrich Kramer Holding GmbH

Dr. Wilhelm Sittenthaler

WACKER SILICONES
Human Resources (Personnel Director)
Corporate Research & Development
Intellectual Property
Regions: India, Asia/Pacific

President & CEO
Siltronic AG** (until September 30, 2010)
Member of the Supervisory Board
Siltronic AG** (since October 1, 2010)
Member of the Supervisory Board
Pensionskasse der Wacker Chemie VVaG
Chairman of the Board of Directors
Siltronic Samsung Wafer Pte. Ltd.***
(until October 8, 2010)

Auguste Willems

WACKER POLYMERS
WACKER BIOSOLUTIONS

Corporate Engineering
Sales & Distribution
Corporate Security
Site Management
Environment, Health, Safety Product Stewardship
Regions: Europe, Middle East

Member of the Bavarian State
Branch Advisory Committee

TÜV Süd AG (since February 11, 2010)

** Subsidiary
*** Joint venture