Supervisory Board

Mr. Van de Aast was appointed as a member of the Supervisory Board on April 14, 2021 and has chaired the Supervisory Board since April 13, 2022. His current (first) term of office ends in 2025. He is the chairman of the Nominating & Corporate Governance Committee and a member of the Remuneration Committee.

Mr. Van de Aast is currently Chairman of the Supervisory Board of NS Group, vice-chairman of the Supervisory Board of Signify NV and member of the Supervisory Board of Witteveen+Bos, the consultancy and engineering firm where he started his professional career in 1979. Mr. Van de Aast is a seasoned executive with a recognized track record at board level in various sectors ranging from construction to software engineering, both in the Netherlands and abroad. His executive experience includes CEO positions at Reed Business, VolkerWessels and Imtech NV.

Ms. Guillouard was appointed as a member of the Supervisory Board on April 15, 2020. Her current (first) term of office ends in 2024. She is chair of the Audit Committee and a member of the Strategy & Organization Committee.

Ms. Guillouard is Chief Executive Officer of RATP Group and has an extensive track record in financial and executive roles across several network-related industries. Her previous roles include various positions at Air France, including that of CFO, the position of CFO at satellite company Eutelsat Communications and the position of CFO and Deputy CEO of the electrical parts distribution company Rexel. In addition to her role at RATP Group, Ms Guillouard is also non-executive director at Airbus Group. Ms. Guillouard is a French citizen.

Mr. Hartman was (re)appointed as a member of the Supervisory Board on April 10, 2019. His current (second) term of office ends in 2023. Mr. Hartman is the vice chairman of the Supervisory Board, as well as chair of the Remuneration Committee and a member of the Nominating & Corporate Governance Committee.

Mr. Hartman is the chairman of the Supervisory Board of Texel Airport N.V. a member of Advisory Board of AviationGlass & Technology and a member of the Advisory Board of Mainblades Inspections. He was vice-chair of the Supervisory Board of Air France/KLM Group in 2013 - 2017. Before that, he spent 40 years working for KLM, the last seven of those as CEO. Mr. Hartman is a Dutch citizen.

Ms. Sap was (re)appointed as a member of the Supervisory Board on April 10, 2019. Her current (second) term of office ends in 2023. Ms. Sap is a member of the Audit Committee and Remuneration Committee.

Ms. Sap is dedicated to making the business world and society at large more sustainable. She holds several supervisory board and other board-level posts, including member of the Supervisory Board of KPMG Netherlands, chair of the Supervisory Board of Arkin, non-executive director of Renewi PLC and Board member of the Dutch Emissions Authority. Between 2008 and 2012, Ms. Sap represented the Dutch Green Party, GroenLinks, in the lower house of the Dutch parliament, during the last two years of which she was party leader. Before that she worked as an economist in the fields of science, policy and business. Ms. Sap is a Dutch citizen.

Mr. Overbeek was appointed as a member of the Supervisory Board on September 4, 2017. His current (second) term of office ends in 2025. He is a chair of the Strategy & Organization Committee.

Mr. Overbeek is Chief Executive Officer of HERE Technologies. Having spent nearly 30 years in the ICT industry, Mr. Overbeek has gained extensive experience in the global digital and communication industry. Prior to joining HERE Technologies, he held several management roles at Cisco, including leading the global services organization and the Asia-Pacific, Japan & China region. Mr. Overbeek is a Dutch citizen.

Mr. Alejandro Plater was appointed as a member of the Supervisory Board on September 10, 2020 and his current (first) term ends in 2025. He is a member of the Audit Committee and the Strategy & Organization Committee.

Mr. Plater, an experienced leader and professional within the Telecommunication sector, is currently Group Chief Operating Officer at A1 Telekom Austria Group, where he has been working since 2015. Prior to joining A1 Telekom Austria Group, Mr. Plater worked for 18 years for Ericsson in Mexico, Sweden and Argentina. Prior to that he worked at Sud América Seguras and Chubb & Son. As part of his position at A1 Telekom Austria Group, Mr. Plater is chairman or member of the supervisory board of various subsidiaries of this group. Mr. Plater is an Argentinian and a Swedish citizen.

Ms. Koelemeijer was appointed as a member of the Supervisory Board on April 13, 2022. Her current (first) term of office ends in 2026. Ms. Koelemeijer is a member of the Remuneration Committee and the Strategy & Organization Committee.

Ms. Koelemeijer is a full professor of Marketing at Nyenrode Business University. She has a strong background in marketing, supply chain management, innovation, digital transformation, retailing and digital commerce. Ms. Koelemeijer combines her academic work with several supervisory board roles  at both listed and non-listed companies, advocacy groups and charities.  She is a member of the supervisory boards of Brunel, B&S Group and Intergamma, and holds supervisory roles at NLinBusiness, Vereniging Eigen Huis and Fonds Gehandicaptensport. Ms. Koelemeijer is a Dutch citizen.   

Ms. Vergouw was appointed as a member of the Supervisory Board on April 13, 2022. Her current (first) term of office ends in 2026. Ms. Vergouw is a member of the Nominating & Corporate Governance Committee and the Strategy & Organization Committee.

Ms. Vergouw is the CEO of Dutch insurer Interpolis (part of Achmea). Prior to joining Interpolis in 2016, she held various management positions at ING. Ms. Vergouw brings extensive experience in the banking and insurance sector, most notably in areas such as digitalization, customer service, operations, marketing, branding and omnichannel sales towards B2C and B2B markets. She holds presiding supervisory positions at the Animal Protection Association and the National Inspection Body for Animal Welfare (LID) in the Netherlands. Ms. Vergouw is a Dutch citizen.