--- title: "DEUTZ Supervisory board: Meet the board : DEUTZ AG" url: "https://www.deutzge.sbs/en/company/management/supervisory-board/" description: The current Supervisory Board of DEUTZ AG holds an equal number of shareholder representatives and employee representatives. date: 2023-07-28 modified: 2024-08-12 --- # DEUTZ Supervisory board: Meet the board : DEUTZ AG Management The Supervisory Board of DEUTZ AG ==================================== ![](https://www.deutzge.sbs/fileadmin/_processed_/b/8/csm_about-deutz-banner_726b08b1e9.png) 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. Shareholder representativesDr. Dietmar Voggenreiter ------------------------ Supervisory Board Chairman ![](https://www.deutzge.sbs/fileadmin/_processed_/1/0/csm_dr-dietmar-voggenreiter_2b33b44f81.jpg) Member of the Supervisory Board since 30 April 2019, Supervisory Board Chairman since February 12, 2022, elected until the Annual General Meeting 2030 Resident in Ingolstadt, management consultant, former member of the Board of Management with responsibility for marketing and sales at AUDI AG, Ingolstadt ##### Curriculum Vitae: Dr. Dietmar Voggenreiter #### 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 - 1999** Senior consultant at Horváth & Partners GmbH, Stuttgart **1999 - 2001** 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 - 2005** Head of Corporate Controlling at AUDI AG, Ingolstadt **2005 - 2006** Head of Corporate Strategy at AUDI AG, Ingolstadt **2007 - 2009** Head of Business in China at AUDI AG, Ingolstadt **2009 - 2015** President of AUDI CHINA Enterprise Mgmt. Co. Ltd., Beijing, PR China; from 2013: also Executive Vice President for China at AUDI AG, Ingolstadt **2015 - 2017** Member of the Board of Management with responsibility for marketing and sales at AUDI AG, Ingolstadt **Since 2018** Senior advisor at Horváth, Automotive Competence Center, Munich **Since 2025** Chairman of the Board of Directors of the Hahn Automobil-Holding GmbH **Summary of relevant activities alongside the Supervisory Board membership:** Dr Dietmar Voggenreiter’s main occupation is management consultant. Employee representativesKatja Olligschläger ------------------- Deputy Chairwoman of the Supervisory Board ![](https://www.deutzge.sbs/fileadmin/_processed_/c/4/csm_katja-olligschlaeger_41c12edb06.jpg) **Employee representatives** Member of the Supervisory Board since 24 July 2023, Deputy Chairwoman of the Supervisory Board since 2 July 2026, appointed until the Annual General Meeting 2028 Member of the Works Council of DEUTZ AG, Cologne, resident in Weilerswist, Germany ##### Curriculum Vitae: Katja Olligschläger #### 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 ![](https://www.deutzge.sbs/fileadmin/_processed_/e/3/csm_sabine-beutert_f673a3bfbf.jpg) #### 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 ##### Curriculum Vitae: Sabine Beutert #### 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 ![](https://www.deutzge.sbs/fileadmin/_processed_/0/8/csm_Silvia_Eidt_Januar_2026_freigegeben_8e540e1412.jpg) ##### Curriculum Vitae: Silvia Eidt #### 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 ![](https://www.deutzge.sbs/fileadmin/_processed_/8/e/csm_helmut-ernst_f9aa166676.jpg) #### 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 ##### Curriculum Vitae: Helmut Ernst #### 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 (until 04/2026) ![](https://www.deutzge.sbs/fileadmin/_processed_/6/4/csm_melanie-freytag_92ec589c18.jpg) ##### Curriculum Vitae: Melanie Freytag #### 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 - 04/2026** Chief Financial Officer, Meyer Werft, Papenburg ![](https://www.deutzge.sbs/fileadmin/_processed_/e/0/csm_patricia-geibel-conrad_8415f2db56.jpg) #### 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 2030 Director of her own audit/tax advice business, management consultant, resident in Hamburg, Germany ##### Curriculum Vitae: Patricia Geibel-Conrad #### 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 ![](https://www.deutzge.sbs/fileadmin/_processed_/8/1/csm_ismail-hilmi-kocer_0130642a9b.jpg) ##### Curriculum Vitae: Ismail-Hilmi Kocer #### 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 ![](https://www.deutzge.sbs/fileadmin/_processed_/d/9/csm_gottfried-laengert_0f7bc1af49.png) #### 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 ##### Curriculum Vitae: Gottfried Laengert #### 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. ![](https://www.deutzge.sbs/fileadmin/_processed_/d/b/csm_dr-ing-rudolf-maier_cc0ebd698a.png) ##### Curriculum Vitae: Dr.-Ing. Rudolf Maier #### 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. ![](https://www.deutzge.sbs/fileadmin/_processed_/8/0/csm_bernd-maierhofer_d299c4c1fa.jpg) #### 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 ##### Curriculum Vitae: Bernd Maierhofer #### 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. #### 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 - ##### Curriculum Vitae: Hans-Jörg Schaller #### 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. DEUTZ Management Board of Management ------------------- ![](https://www.deutzge.sbs/fileadmin/_processed_/4/a/csm_teaserbild_vorstand_62026_0ab087ffad.jpg) [ Learn more ](https://www.deutzge.sbs/slovakia/en/company/management/board-of-management/ "Learn more")