Businessman using tablet in conference room

Supervisory Board

Richard Ridinger

Richard Ridinger


  • Nationality: German
  • Year of birth: 1958
  • Place of birth: Heidelberg, Germany
  • Profession: Independent Management Consultant

Richard RidingerChair, Member of the Supervisory Board since June 10, 2020, elected until the end of the General Shareholders’ Meeting 2027.
Personal DataNationality:German
Year of birth:1958
Place of birth:Heidelberg
Profession:Independent Management Consultant
CommitteesMember of the Nomination and Remuneration Committee since June 15, 2023, and Member of the Transformation and ESG Committee since its establishment in January 2021.
Specific expertise and experienceMore than 20 years of management experience in leading management positions in the chemical industry and healthcare industry, with a focus on operational and strategic transformations due to his professional background with various positions in the chemical industry.
Career2012 - 2019CEO, Lonza Group, Basel, Switzerland (SMI-listed)
2002 - 2011Executive Vice President, Cognis, Monheim am Rhein, Germany
1986 - 2002Various Positions in R&D, Engineering, Operations, Marketing & Sales, Business Unit Lead, HENKEL KGaA, Düsseldorf, Germany
Education and Training1979 - 1985Chemical Engineering (Diploma), University of Karlsruhe, Germany
Membership in Supervisory Boards to be established under applicable lawNone.
Membership in comparable domestic and foreign control bodies of commercial enterprises
  • DSM-Firmenich AG, Kaiseraugst, Switzerland (listed) (Non-executive member of the Board of Directors)
  • Roar HoldCo AB, Stockholm, Sweden (not listed) (Non-executive member and Chair of the Board of Directors) and Recipharm AB, Stockholm, Sweden (Group company, shares held by Roar HoldCo AB, not listed) (Non-executive member and Chair of the Board of Directors)
Stefanie Berlinger

Stefanie Berlinger


  • Nationality: German
  • Year of birth: 1973
  • Place of birth: Neukirchen b. Hl. Blut, Germany
  • Profession: Managing Director, Lilja & Co. GmbH, Frankfurt, Germany

Stefanie BerlingerMember of the Supervisory Board since June 9, 2015, elected until the end of the General Shareholders’ Meeting 2025.
Personal DataNationality:German
Year of birth:1973
Place of birth:Neukirchen b. Hl. Blut
Profession:Managing Director, Lilja & Co. GmbH, Frankfurt, Germany
CommitteesMember of the Audit and Compliance Committee since June 09, 2015.
Specific expertise and experienceMore than 25 years of professional experience in investment banking and capital markets on international level, with expert knowledge in accounting, auditing, risk management and compliance as well as sustainability and in particular ESG.
CareerSince 2010Managing Director, Lilja & Co. GmbH, Frankfurt, Germany
Since 2006Partner, Lilja & Co. AG, Zurich, Switzerland
2005Director, lnstitutional Equity Sales, Deutsche Bank AG, Frankfurt, Germany
2000 - 2004Director, Equity Capital Markets, Deutsche Bank AG, London, UK
1998 - 1999Associate, Equity Capital Markets Syndicate, Deutsche Bank AG, Frankfurt, Germany
1996 - 1997Analyst, Corporate Finance, Deutsche Zentralgenossenschaftsbank AG, Frankfurt, Germany

Education and Training
1992 - 1994European Business Studies (Bachelor), Oxford Brookes University, Oxford, UK
1991 - 1995Business administration (Diploma), Technical University Regensburg, Germany
Membership in Supervisory Boards to be established under applicable lawNone.
Membership in comparable domestic and foreign control bodies of commercial enterprisesNone.

Sujatha Chandrasekaran

Nationality: American, Australian, and Indian

Year of birth: 1967

Place of birth: Sivaganga, India

Profession: Independent Management Consultant

Suja ChandrasekaranMember of the Supervisory Board since June 15, 2023, elected until the end of the General Shareholders’ Meeting 2026.
Personal DataNationality:American, Australian, and Indian
Year of birth:1967
Place of birth:Sivaganga, India
Profession:Independent Management Consultant
CommitteesMember of the Audit and Compliance Committee since June 15, 2023
Specific expertise and experienceMore than 25 years of experience in leading executive management positions in global companies, with a strong focus on technology and data, strategic transformation, digital business models, operations cybersecurity and e-commerce.
2019 - 2022Chief Digital and Information Officer and Senior Executive Vice President, CommonSpirit Health, Chicago, IL, USA.
2016 - 2019Global Chief Digital Officer and Chief Information Officer Kimberly-Clark Corporation, Irving, TX, USA.
2011 - 2016Senior Vice President and Global Chief Technology and Data Officer, Walmart Inc., Bentonville, AR, USA.
2009 - 2011Senior Vice President, Global Chief Information and E-Commerce Officer, The Timberland Company, Stratham, NH, USA.
2007 - 2009Regional Vice President and Chief Technology Officer, PepsiCo Inc., Plano, TX, USA.
1997 - 2007Various positions at Nestlé S.A.: Senior Director and CIO in Glendale, CA, USA and Sao Paulo, Brazil.
Education and Training2022NACD Directorship Certification, National Association of Corporate Directors, USA.
2004Executive development, London Business School, London, England.
1994 - 1996Business Systems (Master), Monash University, Melbourne, Australia.
1984 - 1988Electrical Engineering (Bachelor), University of Madras, Madras, India.
Membership in Supervisory Boards to be established under applicable law
Membership in comparable domestic and foreign control bodies of commercial enterprises
  • American Eagle Outfitters Inc., Pittsburgh, PA, USA (listed) (Non-executive member of the Board of Directors)
  • Cardinal Health Inc., Dublin, OH, USA (listed) (Non-executive member of the Board of Directors)
  • Agendia Inc., Irvine, CA, USA (not listed) (Non-executive member of the Board of Directors)
  • Atos SE, Bezons, France (listed) (Non-executive member of the Board of Directors)
Wijnand Donkers

Wijnand Donkers


  • Nationality: Dutch
  • Year of birth: 1962
  • Place of birth: Oss, The Netherlands
  • Profession: Independent Management Consultant

Wijnand DonkersMember of the Supervisory Board since June 8, 2017, elected until the end of the General Shareholders’ Meeting 2026.
Personal DataNationality:Dutch
Year of birth:1962
Place of birth:Oss, The Netherlands
Profession:Independent Management Consultant
CommitteesMember of the Nomination and Remuneration Committee since June 8, 2017, and Member of the Transformation and ESG Committee since January 2021. Chair of the Transformation and ESG Committee since June 15, 2023.
Specific expertise and experienceMore than 25 years of professional experience leading change, performance improvement and executing transformative M&A as an energy and real estate private equity executive. He has a deep understanding of the challenges facing the international energy and chemicals industry and special expertise in the field of Environment, Social & Governance (ESG) due to his professional background and various executive leadership positions in the chemical industry.
CareerSince 2019Senior Adviser, Cerberus Capital Management LLC, New York
Since 2012Managing Director, Horizon D. Capital BV, Wassenaar, the Netherlands
2015 - 2018Industry Partner, Petrus Advisers, London, Great Britain
2007 - 2012CEO, Deutsche Annington SE / Vonovia SE, Düsseldorf, Germany
1985 - 2007Business Unit Leader Oil and Gas, Chemicals and Trading & Optimisation, BP p.l.c., London, United Kingdom
Education and Training2004 - 2007Several post graduate training programmes in the USA and UK
2004Advanced Management Programme, Harvard Business School, Boston, USA
1988 - 1989Business Administration (Master), Erasmus University, Rotterdam, The Netherlands and William E. Simon School of Business, Rochester, USA
1984 - 1986International Affairs (Diploma), The Johns Hopkins University, Bologna, Italy and Washington DC, USA
1981 - 1984Business Administration (Bachelor), Nyenrode Business Universiteit, Breukelen, The Netherlands
Membership in Supervisory Boards to be established under applicable lawNone.
Membership in comparable domestic and foreign control bodies of commercial enterprises
  • EV Technology Group Inc., Toronto, Canada (listed) (Member of the Board of Directors)
Ulrich Harnacke

Ulrich Harnacke


  • Nationality: German
  • Year of birth: 1957
  • Place of birth: Aachen, Germany
  • Profession: Chartered Accountant and Tax Consultant, Independent Business Consultant

Ulrich HarnackeMember of the Supervisory Board since June 8, 2017, elected until the end of the General Shareholders’ Meeting 2026.
Personal DataNationality:German
Year of birth:1957
Place of birth:Aachen
Profession:Chartered Accountant and Tax Consultant, Independent Business Consultant
CommitteesChair of the Audit and Compliance Committee since June 8, 2017 and member of the Transformation and ESG Committee since June 15, 2023.
Specific expertise and experienceMore than 40 years of professional experience as auditor and consultant of German and international clients, with extensive experience in corporate governance, risk management, compliance, and M&A with international mainly stock listed companies.
CareerSince 2023Independent Business Consultant
2015 - 2023Independent Business Consultant and Partner, Rhodion Advisors GmbH, Düsseldorf, Germany
2007 - 2015Partner and Managing Director, Deloitte GmbH, Wirtschaftsprüfungsgesellschaft, Munich, Germany
1997 - 2006Member of the Board of Management, BDO AG Wirtschaftsprüfungsgesellschaft, Hamburg, Germany
1981 - 1997Auditor and Tax Consultant
Education and Training1976 - 1981Business Administration (Diploma), University of Cologne and RWTH Aachen, Germany
Membership in Supervisory Boards to be established under applicable law
  • Vossloh AG, Werdohl, Germany (listed) (Member of the Supervisory Board and Chair of the Audit Committee)
  • Thüga Group: Contigas Deutsche Energie-AG & Thüga AG & Thüga Holding GmbH & Co. KGaA (Member of the Supervisory Board / Shareholders' Committee)
Membership in comparable domestic and foreign control bodies of commercial enterprises
  • Zentis GmbH & Co. KG, Aachen, Germany (Member of the Advisory Board)
Dr. Andreas Rittstieg

Dr. Andreas Rittstieg

Deputy Chairman of the Supervisory Board


  • Nationality: German
  • Year of birth: 1956
  • Place of birth: Remscheid, Germany
  • Profession: Lawyer

Dr. Andreas RittstiegDeputy Chair, Member of the Supervisory Board since March 19, 2010, elected until the end of the General Shareholders’ Meeting 2025.
Personal DataNationality:German
Year of birth:1956
Place of birth:Remscheid
Profession:Lawyer
CommitteesChair of the Nomination and Remuneration Committee since June 15, 2023.
Specific expertise and experienceMore than 20 years of professional experience in advising M&A and capital market transactions with expert knowledge in compliance, corporate governance and digitalization with insights in numerous digital business models in connection with venture capital transactions.
Career2014 - 2021Member of the Board of Management of Hubert Burda Media Holding KG, München, Germany, responsible for Legal and Compliance
2010 - 2014Partner, Law Firm Gleiss Lutz, Germany
2000 - 2010Founding Partner, law firm Rittstieg Rechtsanwälte, Germany
1987 - 2000Partner, Law Firm Bruckhaus Westrick Heller Löber (today Freshfields Bruckhaus Deringer), Germany
1985 - 1986“Visiting Attorney" at renowned law firms in Los Angeles, USA and Tokyo, Japan
Education and Training1981 - 1983Doctorate degree in law; legal internship (“Referendarzeit”) leading to the bar exam
1976 - 1980Law studies, Universities of Bochum, Geneva and Bonn, Germany and Switzerland
Membership in Supervisory Boards to be established under applicable law
  • Hapag Lloyd AG, Hamburg, Germany (listed) (Member of the Supervisory Board)
Membership in comparable domestic and foreign control bodies of commercial enterprises
  • Hubert Burda Media Holding Geschäftsführung SE, Offenburg, Germany (Member of the Administrative Board)
  • Huesker Holding GmbH, Gescher, Germany (Member of the Advisory Committee)
  • Kühne Holding AG, Schindellegi, Switzerland (Member of the Administrative Board)
By way of a resolution dated October 26, 2023, the Supervisory Board has adopted the following Rules of Procedure: