Supervisory Board

H.Th.E.M. (Henk) Rottinghuis (1956), chairman

Mr Rottinghuis is a Dutch businessman, who has held senior executive and non-executive roles for leading European companies across various industry sectors. He served as CEO and chairman of the Executive Board of Pon Holdings from 2001 until his retirement in 2010. He joined Pon in 1993 and became member of the Executive Board in 1999. Before that, he fulfilled senior management roles at Royal Nedlloyd Group. Since his retirement from Pon, he has held several Supervisory Board and non-executive director positions, including at Royal Bank of Scotland, Blokker, DRG (food retail), Stork (as chairman) and CRH (cement building materials). Mr Rottinghuis completed his studies at the University of Groningen in 1982.

Mr Rottinghuis is a Dutch national and is holding 100,000 shares in the Company’s capital.

Other offices:

• Chairman of the Supervisory Board of ChaneTerminals;
• Member of the Supervisory Board of Damen Shipyards Group.

Mr Rottinghuis was appointed to the Supervisory Board in 2020 and reappointed in 2024.

G. (Gosse) Boon (1959), vice-chairman

Mr Boon studied both quantitative business economics and commercial law at Erasmus University Rotterdam, graduating in 1983. He completed the RA (Chartered Accountant) programme at the same university. Mr Boon started his career at Unilever. From 1983 to 2000, he held various positions within the company, lastly as the CFO of Unilever Brazil. In 2000, Mr Boon was appointed the CEO of DiverseyLever Netherlands, a position he fulfilled until 2004. Subsequently, Mr Boon held the position of CFO and member of the Executive Board with Rijnmond Waste Processing and Van Gansewinkel Group respectively. In 2010, he joined publicly listed Nutreco, and became its CFO and Executive Board member in 2011. In 2015, following the delisting of Nutreco, he decided to leave the company.

Mr Boon has Dutch nationality and is holding 100,000 shares in the Company’s capital. 

Other offices:

• Chairman of the Supervisory Board of Albron;
• Member of the Supervisory Board of KPMG;
• Lay judge (expert member) of the Companies and Business Court (Enterprise Chamber), which is part of the Amsterdam Court of Appeal.

Mr Boon was appointed to the Supervisory Board in 2017 and reappointed in 2021. He was appointed as vice-chairman of the Supervisory Board in 2019.

B. (Bob) Elfring (1959)

Mr Elfring obtained a master’s degree in Law and Business Economics at the University of Groningen. He started his career at (then) Amsterdam-Rotterdam Bank, followed by management positions at Rabobank, Amsterdamse Investeringsbank, MeesPierson and Lehman Brothers. Between 2008 and 2011 he worked for Credit Suisse, where among other tasks he was responsible for Investment Banking in Northern Europe and the Benelux. Between 2011 and 2018. Mr Elfring worked for Bank of America Merrill Lynch, where from 2012 onwards he was responsible for Corporate and Investment Banking in Europe, the Middle East and Africa, based in London. In 2021, he became Vice-Chair of EMEA Investment Banking at J.P. Morgan Securities plc.

Mr Elfring is a Dutch national and does not own any shares in the Company’s capital.

Other offices:

• Chairman of the Supervisory Board of Vuyk Holding;
• Member of the Supervisory Board of ASR Nederland.

Mr Elfring was appointed to the Supervisory Board in 2020 and reappointed in 2024.

J.C. (Jane) Hanson (1967)

Mrs Hanson studied at the University of York and holds a Music BA (Hons). After she started her career as a professional musician in 1989, she completed the study to become a qualified chartered accountant at KPMG. Mrs Hanson continued her career at Aviva PLC, where she rose to the position of Risk & Governance Director. After Aviva she gained further non-executive director experience on private, listed, public sector and charity boards, including audit and risk committee chair roles. Mrs Hanson has been awarded a CBE in 2022. Her executive career included extensive experience in strategic development, enterprise risk management, corporate governance and internal control frameworks. She also has wide experience in developing and monitoring client and conduct risk frameworks and overseeing large and complex IT and transformation programmes.

Mrs Hanson is a British national and does not own any shares in the Company’s capital.

Other offices: 

• Non-executive director of HM Treasury;
• Non-executive director and Audit Committee chair of Welsh Water (and chair of the Board with effect from 1 January 2025);
• Audit Committee chair at the Civil Aviation Authority;
• Audit and Risk Committee member of John Lewis Partnership.

D. (Denise) Koopmans (1962)

Mrs Koopmans earned a master’s degree in Law from Erasmus University Rotterdam and a (post master’s) degree Real Estate Law from Radboud University Nijmegen. Between 1991 and 1998, Mrs Koopmans was Chief Legal Officer at NBM-Amstelland (acquired by BAM in 2000). Afterwards, she has worked in various commercial and senior international leadership positions at Heerema Group, Cap Gemini Engineering and RELX Group. Between 2011 and 2015 Mrs Koopmans was managing director of the Legal & Regulatory division of Wolters Kluwer in the Netherlands and director of the global business line for workflow solutions. Before Wolters Kluwer she was CEO at LexisNexis Business Information Solutions (RELX Group).

Mrs Koopmans is a Dutch national and is holding 15,000 shares in the Company’s capital.

Other offices:

• Non-executive director of Swiss Post AG;
• Non-executive director of Cicor Group;
• Member of the Supervisory Board of NORMA Group;
• Lay judge (expert member) of the Companies and Business Court (Enterprise Division) of the Amsterdam Court of Appeal.

Mrs Koopmans was appointed to the Supervisory Board in 2020 and reappointed in 2024.

M.P. (Paul) Sheffield CBE (1961)

Mr Sheffield studied civil engineering at the University of Surrey. He is a Chartered Engineer and Fellow of the British Institution of Civil Engineers. From 1983 to 2014 he was employed by the Kier Group, a large British construction and property development group, listed on the London stock exchange, where he held a number of management positions. Mr Sheffield spent the first 17 years of his career working on significant infrastructure and construction projects around the world, including seven years as a project director on power stations in the United Kingdom, desalination plants in Saudi Arabia and underground railways in Hong Kong. He then spent seven years running business units within the United Kingdom, and in 2005 he joined the Board of Kier Group with responsibility for global construction activities. He was appointed as Chief Executive Officer in 2010. In 2014, Mr Sheffield left the Kier Group for Laing O’Rourke, the largest private construction company in the United Kingdom, where he was a member of the Executive Committee until 2017 and responsible for their activities in Europe and the Middle East. 

Mr Sheffield is a British national and does not own any shares in the Company’s capital.

Other offices: none

Mr Sheffield was appointed to the Supervisory Board in 2017 and reappointed in 2021.

N.M. (Nina) Skorupska (1961)

Dr Skorupska obtained a master degree in Chemistry, Engineering and Geology at the University of Newcastle upon Tyne and subsequently conducted post-graduate research at the same university. She started her professional career with multiple research and management roles at successive IEA Coal Research and National Power plc. In 2001, Dr Skorupska moved to RWE where she held various senior management and executive positions until 2012, including Chief Technology Officer at Essent in 's-Hertogenbosch, where she was responsible for Essent's power plants (including construction projects). From 2013 to mid-2024, Dr Skorupska was Chief Executive of REA, the Association for Renewable Energy and Clean Technology.

Dr Skorupska is a British national and does not own any shares in the Company’s capital.

Other offices:

• Non-executive Director at Transport for London;
• Non-executive Director at Renewable Energy Assurance Ltd.

Dr Skorupska was appointed to the Supervisory Board in 2021.