
THE SUPERVISORY BOARD OF DEUTZ AG
The current Supervisory Board of DEUTZ AG, chaired by Dr. Dietmar Voggenreiter, has twelve members and is composed of an equal number of shareholder representatives and employee representatives.
The Supervisory Board
The term of office of the Supervisory Board is five years; re-election is permitted. Its main tasks involve monitoring the activities of the Executive Board, appointing the Board of Management, and approving important corporate plans and decisions.
Dr. Dietmar Voggenreiter
Supervisory Board
Chairman
Shareholder
representatives
Member of the Supervisory Board since 30 April 2019,
Supervisory Board Chairman since February 12, 2022, elected
until the Annual General Meeting 2028
Resident in Ingolstadt, management consultant, Horváth & Partners Automotive Competence Center, Munich, former member of the Board of Management with responsibility for marketing and sales at AUDI AG, Ingolstadt
Personal information
Date of birth: 4 January
1969
Place of
birth: Schwäbisch Hall, Germany
Education
Studied business administration with a focus
on technology at the University of
Stuttgart
Degree: postgraduate degree in business
administration (Diplom-Kaufmann) with a
focus on technology
Doctorate (Dr
rer.pol.) from the University of Stuttgart
Career history
1997
Senior
consultant at Horváth & Partners GmbH,
Stuttgart
1999
Principal and authorised signatory
(Prokurist) at Horváth & Partner AG,
Zurich, Switzerland; from 2000 also Head of
the Automotive Industries Competence Center,
Horváth & Partner, for Germany, Austria
and Switzerland (DACH region)
2002
Head of
Corporate Controlling at AUDI AG, Ingolstadt
2005
Head of
Corporate Strategy at AUDI AG, Ingolstadt
2007
Head of
Business in China at AUDI AG, Ingolstadt
2009
President of AUDI CHINA Enterprise Mgmt. Co.
Ltd., Beijing, PR China; from 2013: also
Executive Vice President for China at AUDI
AG, Ingolstadt
2015
Member
of the Board of Management with
responsibility for marketing and sales at
AUDI AG, Ingolstadt
Since 2018
Senior advisor at Horváth & Partners
Automotive Competence Center, Munich
Since 2025
Chairman of the Board of Directors of the
Hahn Group (Hahn Automobil-Holding GmbH and
Hahn Familien-Holding GmbH & Co. KG)
Summary of relevant activities
alongside the Supervisory Board
membership:
Dr
Dietmar Voggenreiter’s main occupation is
management consultant.
Sabine Beutert
Employee representatives
Member of
the Supervisory Board since 30 April 2013, elected until the
Annual General Meeting 2028
Trade Union Secretary, IG Metall Administrative Office, Cologne-Leverkusen, Cologne, Germany (now retired), resident in Cologne
Personal information
Date of birth: 7 December 1959
Place of
birth: Miltenberg, Germany
Education
Studied economics at Philipps University,
Marburg, Germany
Degree: ‘Diplom’
(postgraduate-level degree) in
Economics
Post-graduate studies in
computer science, Marburg
Career history
1986
Neckermann
Versand AG, Frankfurt, Germany
Marketing
planner/customer information systems
1987
Technology
advisory service of the Confederation of
German Trade Unions (North
Rhine-Westphalia), with the following
functions:
Advisor, Head of Training,
Head of Labour and Economics, and member and
Chair of the Works Council
Trade union
representative of the ver.di trade union on
the Supervisory Board of Stadtwerke
Düsseldorf AG
2008 - 2025
IG
Metall Cologne-Leverkusen branch,
Cologne
Trade union secretary
2013
Trade
union representative on the Supervisory
Board of DEUTZ AG
Silvia Eidt
Employee representatives
Member of
the Supervisory Board since 9th December 2025, appointed until
the Annual General Meeting 2028
Vice President Corporate Audit at DEUTZ AG, Cologne, Germany, resident in Dortmund, Germany
Personal information
Date of birth: 19 August 1964
Place of
birth: Meppen, Germany
Education
University Osnabrück
Degree: Business
graduate
University of Edinburgh in Edinburgh, Great
Britain
Degree: Master of Business
Administration
University of Cambridge in Cambridge, Great
Britain
Degree: Master of Philosophy in
Management Studies
Career history
1989-1992
Auditor
Hamburg
Mannheimer Versicherungs-AG (today: ERGO) in
Hamburg
1995-1997
Senior
Business Auditor
Zeneca plc (tosay:
AstraZeneca plc) in London, Great Britain
1995-2015
Business
Auditor, Treasurer, Head of
Controlling
Materna Information
& Communications SE in Dortmund
2015 -
2021
Head of
Internal Audit
Winkelmann Group GmbH
& Co. KG in Ahlen
Since
2021
Vice
President Corporate Audit, DEUTZ AG,
Cologne
Since
2024
Equality
officer, DEUTZ AG, Cologne
Since
2025
Representative
of the senior executives on the supervisory
board of DEUTZ AG, Cologne
Helmut Ernst
Shareholder representatives
Member of the Supervisory Board since 27 April 2023, elected
until the Annual General Meeting 2028
Resident in Burgwald, self-employed management consultant, former Senior Vice President ZF Division Aftermarket & Global Executive Team ZF AG, Schweinfurt & Friedrichshafen
Personal information
Date of birth: March 1, 1960
Place of
birth: Frankenberg/Eder
Education
University of Giessen
Degree: Engineering
Career History
1985 –
1991
Head of
Operations, Continental plant Korbach
1990 –
1992
Production
Manager, Bicycle Tires and Tubes, Vehicle
Replacement Tires, Continental Korbach Plant
1992 –
1996
Managing
Director JV, Continental/Vittoria Tyres
Thailand
1996 –
2001
Key Account
Management ASIA, 2-Wheel Tires Continental,
Bangkok/Thailand
2001 –
2006
Business Unit
Manager 2-Wheel Tires Continental, Korbach
2006 –
2014
Vice
President Independent Aftermarket and
Managing Director, Continental Aftermarket
GmbH, Frankfurt
2014 –
2021
Senior Vice
President ZF Division
Aftermarket &
Global Executive Team ZF AG, Schweinfurt
& Friedrichshafen
Since
2022
Self-employed
management consultant
Since
2024
Member of the
Advisory Board kfzteile24 GmbH, Berlin,
Germany
Since
2025
Member
of the Supervisory Board of JOST Werke SE,
Neu-Isenburg, Germany
Overview of significant
activities in addition to the
Supervisory Board
mandate:
Mr.
Helmut Ernst works full-time as an
independent management consultant.
Melanie Freytag
Shareholder
representatives
Member of the
Supervisory Board since 27 April 2023, elected until the Annual
General Meeting 2028
Resident in Frankfurt am Main,
Chief Financial Officer, Meyer
Werft, Papenburg
Personal information
Date of birth: February 16, 1975
Place of
birth: Essen
Education
Université catholique de Louvain (UCL),
Belgium
Degree: MA (DES), Financial
Economics
University of Kent, Canterbury, United
Kingdom
Degree: BA (Hons), European
Economics with Econometrics
Université de la Réunion, France
Degree:
BA (Lic.), Finance and International
Economics
Career History
1999
Consultant
/ Assistant Manager at KPMG,
Frankfurt am
Main
2001
Project
Manager / Vice President in the area of
European Business Development and Finance at
Winterthur Insurance, Wiesbaden
2004
Senior
Project Manager, Corporate Department
Mergers & Acquisitions, ThyssenKrupp
Services, Düsseldorf
2007
Chief
Financial Officer, thyssenKrupp Xervon
Sweden, Stockholm, Sweden
2009
Chief
Financial Officer, thyssenkrupp Elevator,
Regional Center RUESA (Russia, Eastern
Countries, Switzerland, Austria), Vienna,
Austria
2014
Chief
Financial Officer, Coperion, Stuttgart
2017
Chief
Financial Officer, Klöckner Metals France,
Paris, France
2018
Head of
Corporate Controlling & Development /
Mergers & Acquisitions, Klöckner &
Co, Duisburg
2020
Chief
Financial Officer, Alba Services / Interzero
Group, Berlin
2025
Chief
Financial Officer, Meyer Werft, Papenburg
Patricia Geibel-Conrad
Shareholder representatives
Independent financial expert - Chairwomen of the Audit Committee
Member of the Supervisory Board since 26 April 2018, elected until the Annual General Meeting 2028
Director of her own audit/tax advice business, management consultant, resident in Hamburg, Germany
Personal information
Date of birth: 15 January 1962
Place of
birth: Frankfurt/Main, Germany
Grew up in
Asunción, Paraguay (South America) –
completed a baccalaureate in humanities and
sciences; obtained a German university
entrance qualification (Abitur) in Hamburg,
Germany
Education
Studied business economics at Goethe
University Frankfurt and at the University
of Hohenheim in Stuttgart
Degree:
‘Diplom’ (postgraduate-level degree) in
Business Economics
Career history
1987 -
1994
Auditing
assistant/senior consultant at Dr. Lipfert
GmbH,
Wirtschaftsprüfungsgesellschaft/Steuerberatungsgesellschaft,
Stuttgart
1991
Qualified
as a tax advisor
1994
Qualified
as an auditor
1995 -
1998
Director of
own audit and management consultancy
business, cooperating with KPMG,
Wirtschaftsprüfungsgesellschaft, Buenos
Aires, Argentina
1998 -
2001
Moved abroad
to Mexico City, Mexico
2001 -
2015
Engagement
leader and authorized signatory
(Prokuristin) in Audit & Assurance at
PricewaterhouseCoopers AG,
Wirtschaftsprüfungsgesellschaft, Stuttgart
2015 -
2022
Member of the
Supervisory Board and of the Audit Committee
of HOCHTIEF Aktiengesellschaft, Essen
(publicly listed)
2016 -
2018
Supported the
Climate Governance Initiative of the World
Economic Forum in Davos with the development
of the Principles for Effective Climate
Governance
2018 -
2023
Member of the
Supervisory Board, chairwoman of the Audit
Committee, and member of the Nominations
Committee of CEWE Stiftung & Co. KGaA,
Oldenburg (publicly listed)
2022 -
2023
Deputy
chairwomen of the Supervisory Board and
chairwomen of the Audit Committee of
NEMETSCHEK SE, Munich (publicly listed)
Since
2015
Director
of own audit, tax advice, and management
consultancy business in Hamburg
Since
2020
Honorary
member of the Advisory Board and the
Thematic Committee of FEA – Financial
Experts Association e.V., Berlin
Since
2025
Member of the
Supervisory Board, Chairwoman of the Audit
Committee, and member of the Executive
Committee at MEYER-WERFT GmbH, Papenburg
Summary of relevant activities
alongside the Supervisory Board
membership:
Ms.
Patricia Geibel-Conrad is a certified
auditor and acts as an independent
supervisory board member and operates her
own audit and management consultancy
business.
Ismail-Hilmi Kocer
Employee representatives
Member of the Supervisory Board since June 14, 2023, elected
until the Annual General Meeting 2028
Chairman of the Works Council of DEUTZ AG at the plant in Ulm, resident in Erbach, Germany
Personal information
Date of birth: December 30, 1982
Place of
birth: Ulm, Germany
Education
Apprenticeship as an automotive electrician
Career history
2004 – 2006
Management of the gastronomic family
business
2006 –
2019
Employee on the 91X series, and temporary
activity in the DPS team, DEUTZ AG, Ulm
2014 –
2018
Member of the Works Council of DEUTZ AG at
the plant in Ulm
2019 –
2022
Deputy Chairman of the Works Council of
DEUTZ AG at the plant in Ulm
2022 –
today
Chairman of the Works Council of DEUTZ AG at
the plant in Ulm
2023
Employee representative on the Supervisory
Board of DEUTZ AG, Cologne
Gottfried Laengert
Employee representatives
Member of the Supervisory Board since June 14, 2023, elected
until the Annual General Meeting 2028
Member of the Works Council of DEUTZ AG, Cologne, resident in Cologne, Germany
Personal information
Date of birth: July 3, 1967
Place of
birth: Cologne, Germany
Education
Apprenticeship as plasterer
Professional career
1987
Employee
at Autohaus Fleischhauer Audi/VW, Cologne
1989
Employee
in the assembly department,
Klöckner-Humboldt-DEUTZ (today DEUTZ AG),
Cologne
1995
Employee
in the test field; qualification in the
field of engine technology and test
processes in shift work, DEUTZ AG, Cologne
2018 – today
Member of the Works Council of DEUTZ AG,
Cologne
Committee work: personnel, time
management, REFA / MTM, family and career,
works committee
2023
Employee
representative on the Supervisory Board of
DEUTZ AG, Cologne
Dr.-Ing. Rudolf Maier
Shareholder representatives
Member of the Supervisory Board since 7 October 2020, elected
until the Annual General Meeting 2028
Freelance management consultant, former Executive Vice President of Bosch Diesel Systems, Stuttgart, with responsibilities for research and development as well as for the business unit injection systems for commercial vehicles and off road, resident in Stuttgart.
Personal information
Date of birth: 17 October 1957
Place of
birth: Schönau
Education
Studied mechanical engineering at the
University of Stuttgart, specialising in
control systems and thermal
turbomachinery
Degree: Doctorate in
Engineering (Dr Ing) from the University of
Stuttgart
Career history
1989
Bosch
Diesel Systems, group leader, measurement
technology and tolerance issues
1993
Bosch
Diesel Systems, group leader/head of
department, development of distributor
injection
pumps
1997
Bosch Diesel Systems, system area manager,
time-controlled single pump systems
2001
Bosch Diesel Systems, business unit manager,
injection systems for commercial vehicles
2007
General Manager of Bosch Automotive Diesel
Systems Co. Ltd, Wuxi, China
2011
Executive Vice President of Bosch Diesel
Systems with responsibility for development
2014
Executive Vice President of Bosch Diesel
Systems with responsibility for the business
unit injection systems for commercial
vehicles & off road
Since 2018
Freelance management consultant
Supervisory Board Chairman of Bosch
Engineering GmbH, Abstatt, Germany (until
December 2023)
Supervisory Board
Chairman of ITK Engineering GmbH, Rülzheim,
Germany (until December 2023)
Vice
Chairman Weifu High Technology Group, Wuxi,
China (until May 2021)
Summary of relevant activities
alongside the Supervisory Board
membership:
Dr
Ing Rudolf Maier works mainly as a freelance
management consultant.
Bernd Maierhofer
Shareholder representatives
Member of the Supervisory Board since 27 April 2023, elected
until the Annual General Meeting 2028
Resident in Munich, self-employed management consultant, former CTO der MAN Nutzfahrzeuge AG
Personal information
Date of birth: May 5, 1960
Place of
birth: Munich
Education
Technical University of Munich, Mechanical
Engineering
Degree: Intermediate diploma
HM University of Applied Sciences Munich,
Electrical Engineering
Degree: Diploma
Career History
1992 – 1998
Engineer, MAN Nutzfahrzeuge AG
1999 – 2006
Head of Department, Electronic Systems, MAN
Nutzfahrzeuge AG
2006 – 2008
Managing Director of the Heavy Trucks
Business Unit, MAN Nutzfahrzeuge AG
2008 – 2015
Management Board member responsible for
Strategy & Portfolio Development,
Research & Development Trucks, Buses,
Powertrains (CTO) (from 2009) and Purchasing
(from 2010), MAN Nutzfahrzeuge AG
Since 2016
Self-employed management consultant
Overview of significant
activities in addition to the
Supervisory Board
mandate:
Mr.
Bernd Maierhofer currently performs his
duties as a member of the Supervisory Board
of VOSS Automotive GmbH, Wipperfürth, in
addition to his full-time occupation as an
independent management consultant.
Katja Olligschläger
Employee
representatives
Member of
the Supervisory Board since 24 July 2023, appointed until the
Annual General Meeting 2028
Member of the Works Council of DEUTZ AG, Cologne, resident in Weilerswist, Germany
Personal information
Date of birth: March 13, 1966
Place of
birth: Cologne
Education
1984 Apprenticeship as office clerk at Klöckner-Humboldt-DEUTZ (today DEUTZ AG), Cologne
Professional career
1987 – 2016
Clerk in Order Management Spare Parts, DEUTZ
AG, Cologne
2016 – Today
Released member of the Works Council of
DEUTZ AG, Cologne
Focus: Human
resources, digitalization and data
protection
Other committees: Health
management, occupational health and safety
committee, appeals committee for appeals on
performance appraisal and grouping
Since 2023
Employee representative on the Supervisory
Board of DEUTZ AG, Cologne
Hans-Jörg Schaller
Employee representatives
Member of the Supervisory Board since 14 June 2023, elected
until the Annual General Meeting 2028
- More information to follow -
Personal information
Date of birth 13. March 1960
Place of
birth: Stuttgart
Education
1990 University of Stuttgart, Process
Engineering
Degree: Diplom-Ingenieur
2000 University of Hagen, Patent Law
Degree: Law for patent attorneys and patent
attorneys
2023 University of
Strasbourg, LL.M. IP Law and IP
Management
Degree: European Patent
Attorney
Professional career
1984 – 1989
Programmer and apprentice supervisor, E.
Hauser, Vaihingen/Enz
1990 – 1991
Research assistant, Institute for Textile
and Process Engineering, Denkendorf
1991 - 1997
Patent engineer, Mann + Hummel, Ludwigsburg
1997 - 1999
Head of patent department, Nordischer
Maschinenbau Rud. Baader GmbH and Co. KG,
Lübeck
2000 - 2003
Head of Patent Department, Schuler Pressen
GmbH, Göppingen
2003 - 2004
Head of Patent Department, M4M GmbH, Berlin
2005 - 2006
Head of Patent Department, Nanoferenz GmbH,
Berlin
2006 - 2009
Head of Patent Department, BERU AG (now
BorgWarner Ludwigsburg GmbH), Ludwigsburg
2009 - 2021
Head of Patent & Brand Department, DEUTZ
AG, Cologne
2021 - 2022
Manager Standardization, DEUTZ AG,
Cologne
Since 2018
Member of the Works Council of DEUTZ AG,
Cologne
Committee work: Non-tariff
employees, collective wage agreement, health
management
Since 2023
Employee representative on the Supervisory
Board of DEUTZ AG, Cologne
Summary of relevant activities
alongside the Supervisory Board
Membership:
Mr.
Hans-Jörg Schaller works avocationally as
Managing Director of Fucking Hell GmbH,
Berlin.
