Committed to sustainable, profitable growth
Our Management Board and Supervisory Board combine extensive industry knowledge and leadership to ensure sustainable growth and innovation.
Member of the Supervisory Board since: 2015, elected until 2026
PERSONAL DATA
Year of birth: 1960
Nationality: German
Professional qualification: Master of Business Administration, philologist
COMITTEES
Member of:
- Nomination Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
Andrea Abt began her industrial career at the Daimler-Benz Group company Dornier, where she was in charge of areas including aircraft sales for the Australia/Pacific region. In 1996, she moved within the group to AEG ElectroCom, which was acquired by Siemens at the beginning of 1997. Within the Siemens Group, Ms. Abt held various, mainly commercial positions both nationally and internationally. As Chief Financial Officer, for example, she established a division in Italy and was later responsible for the restructuring program at the Transportation Systems unit. From 2011 to the end of 2014, Ms. Abt was head of Supply Chain Management (purchasing and logistics) at Siemens’ Infrastructure and Cities sector. Since 2015, she has held supervisory and advisory board positions at private and listed companies. She has expertise in the fields of accounting and auditing.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- none
Memberships on similar domestic or foreign control boards of business enterprises:
- Cadeler A/S, Denmark (listed)
- Energy Technology Holdings LLC, USA (unlisted)
Other significant activities alongside Supervisory Board position:
- none
Member of the Management Board since: 2018
currently appointed to the Management Board until: December 2025
PERSONAL DATA
Year of birth: 1979
Nationality: Swiss
Professional qualification: Master of Science Mechanical Engineering
Lukas Burkhardt is a management board member of Gerresheimer AG since 2018. From 2015 to 2017 he was Chief Operating Officer and member of the Group Management Board of the international Franke Group. From 2007 to 2014, he held various managerial positions within the Rieter Automotive Group, now the Autoneum Group, including six years in China and India. Most recently, he was in charge of all Asian plants as Head of Operations Asia. He began his career at Audi AG in Ingolstadt. Lukas Burkhardt studied mechanical engineering at ETH Zurich, where he also obtained his PhD.
Member of the Supervisory Board since: 2024, elected until 2028
PERSONAL DATA
Year of birth: 1964
Nationality: German
Professional qualification: Dr. rer. nat. (neuroscience)
COMITTEES
Member of:
- Nomination Committee
- Innovation Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
Miss Dr. Sidonie Golombowski-Daffner was CEO and President of Advanced Accelerator Applications SA, a subsidiary of Novartis, from October 2019 to January 1, 2024. During this period she was also a member of the supervisory board of Novartis Germany. Previously, she was General Manager of Novartis Pharma GmbH Nuremberg and Country President Germany since 2017. From 2011 to 2017, Dr. Golombowski-Daffner held management positions at Novartis in Germany and Switzerland. Before that, Dr. Golombowski-Daffner spent 10 years at Sanofi Group companies in various management positions in Germany, France and the Asia-Pacific region. She began her career as a management consultant at Roland Berger, where she advised pharmaceutical customers in the USA, Europe, Russia and Japan for over five years.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- Paul Hartmann AG (listed)
Memberships on similar domestic or foreign control boards of business enterprises:
- none
Other significant activities alongside Supervisory Board position:
- none
Chairman of the Supervisory Board
Member of the Supervisory Board since: 2014 (also elected from 2010-2012), elected until 2026
PERSONAL DATA
Year of birth: 1958
Nationality: Deutsch
Professional qualification: Degree in Mechanical Engineering / Degree in Business Economics
COMITTEES
Member of:
- Presiding Committee
- Audit Committee
- Nomination Committee
- Mediation Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
Dr. Axel Herberg began his career at what is now ThyssenKrupp AG and then spent several years as a consultant at McKinsey & Company. He joined the Gerresheimer Group in 1992. From 1996 onwards, he was a member of the Management Board and Chief Executive Officer from 2000 to 2010. Between 2010 and 2017, he was a partner at the Blackstone Group and responsible for the private equity business in the German-speaking regions of Europe. Dr. Axel Herberg is a member of various supervisory boards and is active as entrepreneuer. He has expertise in the fields of accounting and auditing.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- none
Memberships on similar domestic or foreign control boards of business enterprises:
- European Medco Development 4 S.àr.l., Luxembourg (unlisted)
- Vetter Pharma-Fertigungs GmbH & Co. KG, Germany (unlisted)
Other significant activities alongside Supervisory Board position:
- none
Member of the Supervisory Board since: 2022, elected until 2026
PERSONAL DATA
Year of birth: 1967
Nationality: German
Professional qualification: Degree in Economics, Master of Arts
COMITTEES
Member of:
- Presiding Committee
- Audit Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
After working as a researcher at the ifo Institute for Economic Research while studying for a doctorate, Prof. Dr. Annette G. Köhler was employed by the consultancy firm Mummert + Partner from 1997 to 1998. Between 1998 and 2003, she was an academic assistant at the University of Wuppertal and the University of Ulm, where she qualified as a professor. From 2004 to 2005, she worked as a professor of business administration at HHL Leipzig Graduate School of Management, before accepting a professorship at the University of Duisburg-Essen, where she has since held the Chair of Accounting, Auditing and Controlling. Her main areas of research include accounting, international corporate governance and auditing. She has expertise in the fields of accounting and auditing.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- GEA Group AG, Germany (listed)
- DMG Mori AG, Germany (listed)
Memberships on similar domestic or foreign control boards of business enterprises:
- DKSH Holding AG, Switzerland (listed)
Other significant activities alongside Supervisory Board position:
- none
Member of the Supervisory Board since: 2022, elected until 2026
PERSONAL DATA
Year of birth: 1986
Nationality: German
Professional qualification: Bachelor of Arts in Education
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
After studying and graduating in adult education and social pedagogy in Bamberg, Marlis Mergenthal worked for 2 years as a JAV and youth officer at the IGBCE. Following this, she was employed as trade union secretary of the IGBCE in the district Mannheim from 2014 to 2020. Since May 2020, she has now been part of the IGBCE Mainfranken and is the responsible plant supervisor at Gerresheimer Lohr GmbH.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- none
Memberships on similar domestic or foreign control boards of business enterprises:
- none
Other significant activities alongside Supervisory Board position:
- none
Member of the Management Board since: 2019
currently appointed to the Management Board until: May 2027
PERSONAL DATA
Year of birth: 1970
Nationality: German
Professional qualification: Diploma in Business Administration
Dr. Bernd Metzner joined Gerresheimer as CFO in May 2019. Prior to that he had been Chief Financial Officer of SDAX-listed Ströer SE & Co. KGaA since 2014. From mid-2011 to mid-2014 he served as CFO of the global, family-owned Döhler Group. Dr. Metzner held various management positions in finance at the Bayer Group between 2002 and 2011. Among other roles, he was responsible for coordinating the carve-out and initial public offering of Lanxess, and held the position of CFO at Bayer Italy as well as that of global CFO in Bayer’s Pharmaceuticals Division. He started his career at a law firm. He studied business administration in Siegen, Germany, and completed his doctorate there.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of other Governing Boards (outside the Gerresheimer Group)
- UniCredit Bank AG (no publicly listed company)
Member of the Supervisory Board since: 2012, elected until 2027
PERSONAL DATA
Year of birth: 1970
Nationality: German
Professional qualification: Maintenance Fitter
COMITTEES
Member of:
- Presiding Committee
- Audit Committee
- Innovation Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
Markus Rocholz completed his apprenticeship as maintenance fitter at Gerresheimer Essen's predecessor company in 1987. Since passing the apprenticeship examination he has held various positions at the Essen plant. Markus Rocholz has been full-time Chairman of the Works Council since 2002 and he is also Chairman of the Gerresheimer Group Works Council.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- Gerresheimer Tettau GmbH, Germany (no publicly listed company)
Memberships on similar domestic or foreign control boards of business enterprises:
- none
Other significant activities alongside Supervisory Board position:
- none
Deputy Chairman of the Supervisory Board
Member of the Supervisory Board since: 2024, appointed until 2027
PERSONAL DATA
Year of birth: 1966
Nationality: German
Professional qualification: Chemical laboratory technician
COMITTEES:
Member of the:
- Presiding Committee
- Audit Committee
- Mediation Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
After training as a chemical laboratory technician and subsequently working as a chemical laboratory technician at Hermann C. Starck KG in Goslar, Markus Römer completed further studies at the Social Academy in Dortmund in the field of human resources, social and business management. He has worked full-time for the German Mining, Chemical and Energy Industrial Union (IGBCE) since 1992, including as deputy head of the Leverkusen district and the Baden-Württemberg district. He also heads the education/science department and is active as head of the Hanover district. Markus Römer has experience as a member of supervisory boards in the pharmaceutical, glass and automotive supply industries.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of other supervisory boards required by German law:
- Sanofi-Aventis Deutschland GmbH, Frankfurt am Main (not listed)
- Hoechst GmbH, Frankfurt am Main (not listed)
Membership of comparable domestic or foreign supervisory bodies of commercial enterprises:
- none
Other significant activities in addition to the Supervisory Board mandate:
- none
Member of the Supervisory Board since: 2025, elected until 2027
PERSONAL DATA
Year of birth: 1981
Nationality: German
Professional qualification: Certified Business Economist (IHK)
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
After obtaining her high school diploma, Manuela Scheinost completed an apprenticeship as an industrial clerk at Gerresheimer Regensburg GmbH (formerly Wilden). Since 2005, she has held various positions at Gerresheimer Regensburg GmbH and has qualified as a business economist (IHK) while working.
Manuela Scheinost is currently employed in quality management. She is a subject matter expert for process and document control and works as an internal QM auditor for the ISO 9001 and ISO 13485 standards at Gerresheimer Medical Systems locations.
She has been a member of the works council since 2018 and has been on partial leave since 2022.
In 2022, she joined the Group Works Council of Gerresheimer AG, where she is a member of the IT Committee. In June 2025, she was elected Deputy Chair of the Group Works Council.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- none
Memberships on similar domestic or foreign control boards of business enterprises:
- none
Other significant activities alongside Supervisory Board position:
- none
Member of the Supervisory Board since: 2012, elected until 2027
PERSONAL DATA
Year of birth: 1970
Nationality: German
Professional qualification: Industrial mechanic
COMITTEES
Member of:
- Mediation Committee
- Innovation Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
Paul Schilling has worked in various roles in the production department at Gerresheimer Bünde GmbH since 2002. He has been a member of the Works Council since 2006, and has been exempted from his role to become Chairman of the Works Council and a member of the Group Works Council of Gerresheimer AG since 2010.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- Gerresheimer Bünde GmbH
Memberships on similar domestic or foreign control boards of business enterprises:
- none
Other significant activities alongside Supervisory Board position:
- none
Member of the Supervisory Board since: 2016, elected until 2027
PERSONAL DATA
Year of birth: 1981
Nationality: German
Professional qualification: Diploma in Business Administration (FH) and Bachelor of Business Administration
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
After her studies and degrees in business administration in Dresden, Germany, and Arnhem, The Netherlands, Katja Schnitzler started her career as Assistant Manager at KPMG in Dresden and Düsseldorf from 2004 to 2008. From 2008 to 2019, she worked for Gerresheimer AG in Düsseldorf, initially as a Corporate Auditor and later as Group Director Business Excellence and Continuous Improvement. From 2020 to 2023 she was responsible for the areas of work safety, sustainability and operational excellence as Group Senior Director EHS, CSR, OPEX global at Gerresheimer AG. In July 2023, she assumed responsibility for Gerresheimer's global human resources organization as Global Senior Vice President People & Organization.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- none
Memberships on similar domestic or foreign control boards of business enterprises:
- none
Other significant activities alongside Supervisory Board position:
- none
Member of the Management Board since: 2018
currently appointed to the Management Board until: October 2026
PERSONAL DATA
Year of birth: 1963
Nationality: German
Professional qualification: Degree in industrial engineering
Dietmar Siemssen joined Gerresheimer as CEO in November 2018. Since March 2019 he is responsible for Plastics & Devices as well as Advanced Technologies Divisions. Formerly he was CEO of the international automotive supplier Stabilus 2011 until 2018. Thanks to the growth strategy he shaped, along with a major acquisition, revenues of Stabilus grew from around EUR 360m to just under EUR 1bn recently. He led the drive to convert Stabilus into a European public company that has been listed on the SDAX since 2014. After completing his university studies, Dietmar Siemssen worked in various management positions at Continental from 1994 to 2011, ultimately as head of a joint venture between Continental and Nisshimbo in Yokohama, Japan, and as head of the Chassis and Safety division in Asia. Dietmar Siemssen’s studied at TU Munich, KTH Stockholm and TU Darmstadt where he gained a diploma in industrial engineering specializing in mechanical engineering.
Member of the Supervisory Board since: 2024, elected until 2028
PERSONAL DATA
Year of birth: 1969
Nationality: German
Professional qualification: Dr. rer. pole. (Health Economics), Diploma in Business Information Technology
COMITTEES
Member of:
- Nomination Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
Dr. Wenzel was a member of the Supervisory Board of Fresenius Medical Care AG & Co. KGaA from May 2019 to November 2023, and as Lead Independent Director since May 2021. She previously held various global management positions in the Pharmaceuticals division at Merck KGaA from June 2004 to August 2021, most recently as Executive Vice President and Head of the Surface Solutions business unit since 2019. Before working at Merck, Dr. Wenzel worked in various financial and business positions in the healthcare industry at AXA Krankenversicherung AG and Medvantis Holding AG. She also worked as a consultant at McKinsey & Comp for several years. Miss Dr. Wenzel was also a member of the Committee for the Sustainability of Financing the Social Security Systems of the Federal Ministry of Health. In March 2025, she took over the chairmanship of the supervisory board of H. Lundbeck A/S, Denmark.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- none
Memberships on similar domestic or foreign control boards of business enterprises:
- H. Lundbeck A/S, Dänemark (listed)
- Servier SAS, Frankreich (unlisted)
Other significant activities alongside Supervisory Board position:
- none
Member of the Supervisory Board since: 2024, elected until 2028
PERSONAL DATA
Year of birth: 1961
Nationality: German
Professional qualification: Dr. med.
COMITTEES
Member of:
- Innovation Committee
RELEVANT KNOWLEDGE, SKILLS AND EXPERIENCE
Dr. Zindel has been a member of the Supervisory Board of Fresenius SE & Co. KGaA since May 2022. Previously, Dr. Zindel was a member of the Board of Management of Siemens Healthineers AG from October 2019 to March 2022. In 2018-2019 he was managing director of the company's Diagnostic Imaging division and from 2015 to 2018 he headed the Magnetic Resonance Imaging (MRI) unit. From 2012 to 2015, Dr. Zindel worked in the USA. He worked for Siemens Medical Solutions as CEO of PETNET after previously managing the hematology and urinalysis divisions for Beckmann-Coulter. He started his career as a practicing physician in surgery, internal medicine and nuclear medicine. In 1998, he moved to the healthcare industry as a segment manager at Siemens Healthcare and subsequently moved to various senior positions in the magnetic resonance imaging division.
MEMBERSHIP OF OTHER SUPERVISORY BOARDS
Membership of Supervisory Boards according to German legal regulations:
- Fresenius SE & Co. KGaA (listed)
Memberships on similar domestic or foreign control boards of business enterprises:
- none
Other significant activities alongside Supervisory Board position:
- Member of the Board of Trustees of the Fraunhofer Heinrich Hertz Institute
- Member of the advisory board of LifeLink Medical GmbH
