Executive Board
Mr A.G.J. (Ton) Hillen (1961)
Chair of the Executive Board, CEO
Dutch. Mr Hillen was appointed as a member of the Executive Board of Royal Heijmans N.V. on 18 April 2012, reappointed on 13 April 2016, 15 April 2020 and 30 April 2024 for a four-year term. Appointed as CEO on 1 December 2016. He has held various positions at Heijmans since 1992 and was appointed Director of Property Development and Residential Building at Heijmans in 2008. Prior to joining Heijmans, Mr. Hillen was employed at BAM and Anton Obdeijn Project development.
Ancillary positions: Member of the Supervisory Council of the Noord Brabants Museum and member of the Management Board of Bouwend Nederland.
Mr G.M.P.A. (Gavin) van Boekel (1975)
Member of the Executive Board, CFO
Dutch. Mr van Boekel was appointed as a member of the Executive Board/CFO of Royal Heijmans N.V. on 1 September 2021 and reappointed on 16 April 2025 for a four-year term. Prior to joining Heijmans, he held various financial positions at Unilever for more than 21 years.
Secondary positions: Member and from 2020 Chair of the Curatorium of the Executive Master Finance & Control (‘Registercontrollers Opleiding’) at the VU University of Amsterdam, member of the Advisory Board of the Dutch Association of Registered Controllers, member of the Advisory Board of the School of Accounting at the VU University of Amsterdam.
Supervisory Board
Mr M.C. (Marc) van Gelder
(1961)
Chair
Dutch. From 2005 to 2014, Mr van Gelder was CEO of Mediq. From 1996 to 2004, he held various management positions at Ahold and prior to that he worked at McKinsey & Company, among other companies. He was appointed as a member of the Supervisory Board on 4 November 2024, and appointed as Chair on 16 April 2025. He is due to step down in 2028.
Principal ancillary positions: Chair of the Supervisory Board of Incision Group B.V., chair of the Supervisory Board of JPMorgan European Discovery Trust plc., member of the Supervisory Board and chair of the audit committee of Action, chair of the board of the ABN AMRO Bank Continuity Trust and chair of the board of the NN Group Continuity Trust.
Ms M.M. (Martika) Jonk
(1959)
Vice-Chair
Dutch. Ms. Jonk qualified as a lawyer in 1986 and until 1 January 2024 was a senior counsel at CMS Derks Star Busmann. She was appointed as a member of the Supervisory Board in December 2018 for a term of more than four years, reappointed for four years in 2023. She is due to step down in 2027.
Principal additional positions: member of the Supervisory Board of HES International B.V., member of the Supervisory Council of Catharina hospital in Eindhoven.
Ms J.W.M. (Ans) Knape-Vosmer
(1962)
Dutch. Senior Vice President HR&O Global Operations | Enabling Functions | Strategic Sourcing & Procurement at ASML. She was appointed as a member of the Supervisory Board in April 2020, and reappointed in 2024. She is due to step down in 2028.
Principal ancillary positions: Member of the Supervisory Board of Royal Douwe Egberts B.V., member of the Supervisory Board of the Accell Group and member of the Supervisory Board of the BDR Thermea Group.
Supervisory Board
Mr A.E. (Arnout) Traas (1959)
Chair of the Audit and Risk Committee
Dutch. From mid-2011 to April 2020, Mr Traas was CFO at ForFarmers N.V. Prior to this, he worked at FrieslandCampina for ten years, as well as at a number of other companies, including Arthur Andersen, Mars and Vendex/KBB. He was appointed as a member of the Supervisory Board on 14 April 2021, and reappointed in 2025 for a four-year term. He is due to step down in 2029. Principal ancillary positions: Chair of the Supervisory Board of ABAB, chair of the Supervisory Board of Vreugdenhil Dairy Foods, coordinator of the Next Generation CFO course at the VU University in Amsterdam and chair of the Advisory Board for the Executive Master of M&A and Valuation at the VU University in Amsterdam and Groningen University (RUG), and member of the Management Board of the Campina pension fund.
Mr A.S. (Allard) Castelein (1958)
Dutch. Until mid-2023, he was Chief Executive of the Port of Rotterdam. He was appointed as a member of the Supervisory Board for four years on 12 July 2022. He is due to step down in 2026.
Principal ancillary positions: Non-executive director at SBM Offshore, non-executive director at ABP (Associated British Ports), and special representative of the Dutch government's Raw Materials strategy.