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Supervisory Board of Bertrandt AG

Dietmar Bichler

Chairman of the Supervisory Board (until June 30th 2025)

Curriculum Vitae

Personal Data
Age: 66
Nationality: German

Career 
1975-1978Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), training as sheet metal worker
1979-1982 Studies in Automotive Engineering and Welding at Ulm University of Applied Sciences (Ulm, Germany), Degree: Graduate Engineer (FH)
1982-1987Bertrandt Ingenieurbüro GmbH (Sindelfingen, Germany), Project Manager for Process Engineering
1987-1989Bertrandt Ingenieurbüro GmbH (Stuttgart, Germany), Authorised Officer
1989-1994Bertrandt Ingenieurbüro GmbH (Stuttgart, Germany), Managing Director
1995-1996Bertrandt GmbH (Tamm, Germany), Executive Director
1996-2000Bertrandt AG (Tamm, German), Member of the Board of Management, responsible for Engineering, Sales and Human Resources
2001-2019Bertrandt AG (Ehningen, Germany), Chairman of the Management Board / CEO

 

Appointment
Date of initial appointment: 20 February 2019
Date of resignation: 30 June 2025

Other offices (stating any stock exchange listing of the relevant companies):

  • Chairman of the Supervisory Board of b.invest AG i.L., (Ehningen, Germany)
  • Member of the Supervisory Board of MAHLE GmbH, (Stuttgart, Germany)
  • Deputy Chairman of the Supervisory Board of Lindauer DORNIER GmbH, (Lindau, Germany)
  • Deputy Chairman of the Supervisory Board of Boysen Holding Verwaltungs-SE, (Altensteig, Germany)
  • Member of the Supervisory Board of MAHLE Behr Verwaltungs GmbH, (Stuttgart, Germany) (until 28.01.2025)


As of: October 1st, 2025

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Martin Roth

Deputy Chairman of the Supervisory Board of Bertrandt AG (since 07.08.2025)

Curriculum Vitae

Personal Data
Age: 58
Nationality: German

Career 
Until 1994Technical University Darmstadt, Degree: Industrial Engineering (Dipl.-Wirt.-Ing.)
1994 - 1998Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), Corporate planning and development
1998 - 2003Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), Head of Purchasing Development
2004 - 2011Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), Head of Financial Planning and Information Management
2011 - 2019Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), Head of Strategy Finance and Risk Management
2020 - 2021Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), Head of Financial Management, Risk Management and M&A
2021 - 2024Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), Head of Financial Management, Risk Management and M&A and acting Head of Finance Strategy and Organization 
since 2025Dr. Ing. h.c. F. Porsche AG (Stuttgart, Germany), Head of Financial Management and M&A

 

Appointment
Date of initial appointment: July 23rd 2025
Duration and end of current appointment: 7 months, February 18th 2026

Other Offices (stating any stock exchange listing of the relevant companies):

  • Member of the Supervisory Board of VARTA AG (Ellwangen, Germany) (since 26.05.2025)
  • Member of the Supervisory Committee of Cellforce Group GmbH (Kirchentellinsfurt, Germany (since 28.06.2021)
  • Member of the Supervisory Committee of Cetitec GmbH (Pforzheim, Germany) (since 14.12.2020)
  • Member of the Supervisory Committee of Smart Press Shop GmbH & Co. KG (Halle/Saale, Germany) (since 24.03.2025)
  • Member of the Supervisory Committee of Porsche Investments Management S.A. (Luxemburg) (since 21.03.2023)
  • Member of the Supervisory Committee of Rimac Group d.o.o. (Zagreb, Croatia) (since 28.05.2025)
  • Member of the Supervisory Committee of Bugatti Rimac d.o.o. (Zagreb, Croatia) (since 28.12.2022)
  • Member of the Supervisory Committee of Porsche eBike Performance GmbH (Ottobrunn, Germany) (since 10.04.2025)
  • Member of the Supervisory Committee of V4Smart GmbH & Co. KG (Nördlingen, Germany) (since 04.03.2025)


As of: October 1st, 2025

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Udo Bäder

Member of the Supervisory Board

Curriculum Vitae

Personal Data
Age: 65
Nationality: German

Career 
1980-1985 Studies in Economics at the University of Hohenheim (Stuttgart, Germany); Degree: Diploma in Economics (dipl.-oec.)
1985-1986Military service
1987-1996 

Dr. Lipfert GmbH Wirtschaftsprüfungsgesellschaft (Stuttgart, Germany)

1987Assistant auditor
1991Appointment as tax consultant
1993Appointment as auditor
1996Partner
1997C&L Deutsche Revision AG, Wirtschaftsprüfungsgesellschaft (Stuttgart, Germany), Partner
1998-2018PricewaterhouseCoopers GmbH, Wirtschaftsprüfungsgesellschaft (Stuttgart, Germany), Partner
since 2018Independent auditor and tax consultant

 

Appointment
Date of initial appointment: 20.02.2019
Duration and end of current appointment: 5 years, February 2029

Other offices (stating any stock exchange listing of the relevant companies): none

 

As of: Oktober 1th, 2025

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Karin Himmelreich

Member of the Supervisory Board Bertrandt AG

Curriculum vitae

Personal Data
Age: 54
Nationality: German

Career 
1990-1992Hewlett-Packard GmbH (Bad Homburg, Germany), Apprenticeship as Industrial Business Management Assistant
1992-1998Studies Business Administration at the Johann Wolfgang Goethe University (Frankfurt, Germany), Degree: Business Administration 
1994-1995International Business at Trenton State College (New Jersey, USA)
1998-2001Arthur Andersen Business Consulting GmbH (Frankfurt, Germany), Senior Consultant
2001-2007Cinven GmbH (Frankfurt, Germany), Managing Director
Since 2008MPTransaction GmbH (Frankfurt, Germany), Founding Partner and Managing Director
2020-2021MPTransaction Pty Ltd (Melbourne, Australia), Founding Partner and Managing Director 

 

Appointment
Date of the initial appointment: February 21st 2024
Duration and end of the current appointment: 5 years, until February 2029

Other offices (stating any stock exchange listing of the relevant companies): none


As of: October 1st, 2025

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Tobias Hoppe

Member of the Supervisory Board Bertrandt AG

Curriculum vitae

Personal Data
Age: 44
Nationality: German

Career 
1992-1998Maxim-Gorki-Schule (Salzwedel, Germany): Secondary school leaving certificate
1998-2001Bruns Holzbau GmbH (Salzwedel, Germany), Apprenticeship as Carpenter
2002-2005German Armed Forces (Ahlhorn / Straußberg, Germany), military driver BCE
2005-2006Professional promotion service of the German Armed Forces in conjunction with Verkehrsinstitut Nord GmbH (Hamburg, Germany), Apprenticeship as Professional driver
2006-2007UniRoka GmbH (Rostock, Germany), Robot operator
2007-2009Mayer-Koldingen GmbH & Co KG (Pattensen, Germany), professional driver for heavy and special transport
2010-2012Professional Training centre for technicians “Gustav Anton Zeuner” (Dresden, Germany), finished as Technician specialised in automotive engineering
2012-2018Bertrandt Ingenieurbüro GmbH (Tappenbeck, Germany), Technical Employee Testing
2018-2025Bertrandt Technologie GmbH (Sassenburg, Germany), Technical Employee Testing / Full-time Chairman of the Works Council
Since 10/2025Bertrandt Ingenieurbüro GmbH (Tappenbeck, Germany), Technical Employee Testing

 

Appointment
Date of the initial appointment: February 21st 2024
Duration and end of the current order: 5 years, until February 2029

Other mandates (stating any stock exchange listing oft he relevant companies): none


As of: October 1st, 2025

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Steffen Heeschen

Member of the Supervisory Board Bertrandt AG

Curriculum vitae

Personal Data
Age: 42
Nationality: German

Career 
1997-2001Realschule am Drömling (Rühen, Germany), Secondary school leaving certificate 1
2001-2004Volkswagen AG (Wolfsburg, Germany), apprenticeship as an industrial mechanic specialising in production technology
2004-2006Volkswagen AG (Wolfsburg, Germany), industrial mechanic specialising in production technology
2006-2007Work and Travel, New Zealand
2008-2011Wärtsilä Norway AS (Ålesund, Norway), Service Mechanic
Since 2011Bertrandt Ingenieurbüro GmbH (Tappenbeck, Germany), Technical and Commercial Employee
since 2014 Lead Engineer
since 2018 Deputy Chairman of the Works Council of BIG Tappenbeck
since 2025 Chairman of the Works Council of BIG Tappenbeck

 

Appointment
Date of the initial appointment: February 21st 2024
Duration and end of the current order: 5 years, until February 2029

Other mandates (stating any stock exchange listing of the relevant companies): none


As of: October 1st, 2025

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Matthias Benz

Chairman of the Supervisory Board of Bertrandt AG (since 07.08.2025)

Curriculum Vitae

Personal Data
Age: 54
Nationality: German

Career 
1991-1994Ravensburg University of Cooperative Education, Degree: Diplom-Betriebswirt (BA)
1994-1997ZF North American Operations (Florence, USA), Group Controller ZF North America
1997-2000ZF Friedrichshafen AG (Friedrichshafen, Germany), Assistant to the Chairman of the Board of Management
2000-2001   ZF Friedrichshafen AG (Friedrichshafen, Germany), Senior Manager Corporate Development
2001-2003ZF Friedrichshafen AG / ZF Sachs AG (Schweinfurt, Germany), Head of Merger Integration
2003-2004ZF Friedrichshafen AG (Shanghai, China), Member of the Regional Board of Management
2004-2007ZF North American Operations / ZF Mexico Holding, CFO / Member of the Regional Board of Management
2007-2011ZF Services GmbH (Schweinfurt, Germany), Managing Director
2011-2015ZF AG, Marine Group (Padua, Italy) Chief Executive Officer (CEO)
2015-2020ZF Friedrichshafen AG (Friedrichshafen, Germany), Executive Vice President and Head of Sales ZF Group
2020-2024CAG-Holding / Neuman Aluminium Industries / Raufoss Technology (Vienna, Austria), Chairman of the Board of Management (CEO)
Since 07/2024Zeppelin GmbH (Garching, Germany), Member of the Management Board
Since 10/2024Zeppelin GmbH (Garching, Germany), Chairman of the Management Board / CEO 

 

Appointment
Date of initial appointment: May 18th 2022
Duration and end of current appointment: 5 years, February 2029

Other Offices (stating any stock exchange listing of the relevant companies):

  • Member of the Supervisory Board of Zeppelin Baumaschinen GmbH (Garching, Germany) (since 01.10.2024)
  • Member of the Administrative Council of Zeppelin International AG (Steinhausen, Switzerland) (since 17.02.2025)
  • Chairman of the Supervisory Board of Zeppelin Rental GmbH (Garching, Germany) (since 19.11.2024)
  • Chairman of the Supervisory Board of Zeppelin Systems GmbH (Friedrichshafen, Germany) (since 16.07.2024)
  • Member of the Supervisory Board of Pfisterer AG (Winterbach, Germany)
  • Member of the executive board of Aluminum Deutschland e.V. (Düsseldorf, Germany) (until 30.04.2025)


As of: October 1st, 2025

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Headquarter

Bertrandt AG

Birkensee 1, 71139 Ehningen, Germany

Phone: +49 7034 656-0
Contact