The Supervisory Board (SB) monitors the policy of the Management Board and how Alliander functions as a whole. The SB checks whether the policy is being carried out properly and whether the interests of all stakeholders are taken into account. In addition, the SB advises the Management Board and is formally the employer of the directors.
The Supervisory Board (SB) has five members. They are appointed by the shareholders for four years and can be reappointed once. In special cases, the term can be extended further. The SB works according to a set of rules that explains how it carries out its tasks and handles issues such as conflicts of interest.
There are two permanent committees:
These committees prepare decisions, but the full Supervisory Board makes the final decisions.
Mr Snel has been a member of the Supervisory Board since 17 October 2025 and serves as Chairman since 15 April 2026. His current term runs until 2030. He is also a member of the Selection, Appointment, and Remuneration Committee.
Born: 1970, Dutch nationality
Mr Snel is a partner and advisor at the communications consultancy FGS Global. From 26 October 2017 to 18 December 2019, he was State Secretary for Finance in the Rutte III cabinet. Before that, he held various leadership roles, including Chairman of the Management Board of the Dutch Water Authorities Bank, Deputy Director-General of Fiscal Affairs at the Ministry of Finance, Director at the pension administrator APG, and Executive Director at the International Monetary Fund in Washington. After his term as State Secretary, he held roles such as director of the ABP pension fund, Non-Executive Chair of shipbuilder Royal IHC, and Chair of Element NL.
Mr Penning has been a member of the Supervisory Board since 1 February 2021. His current term runs until 2029. He is Chair of the Selection, Appointment, and Remuneration Committee.
Born: 1963, Dutch nationality
Until 1 December 2022, Mr Penning was Chief Human Resources Officer (CHRO) and a member of the Executive Board at ABN AMRO. Before that, he held various management and executive positions at Shell, including Executive Vice President HR Downstream.
Ms Menssen has been a member of the Supervisory Board since 26 September 2019. Her current term runs until 2027. She is Chair of the Audit Committee.
Born: 1967, Dutch nationality
Ms Menssen has extensive experience in financial and operational roles. She was CFO and a member of the Management Board of BAM Group and earlier CFO and COO of the Port of Rotterdam Authority.
Ms Nooteboom has been a member of the Supervisory Board since 19 April 2023. Her current term runs until 2027. She is a member of the Audit Committee.
Born: 1971, Dutch nationality
Ms Nooteboom is CEO of the Royal Nooteboom Group. She began her career in the financial sector at F. van Lanschot Bankiers and ING, before moving to the Nooteboom Group in 2010.
Mr Eulderink has been a member of the Supervisory Board since 26 September 2019. His current term runs until 2027. He is a member of the Audit Committee.
Born: 1961, Dutch nationality
Mr Eulderink was Chief Operating Officer (COO) and a member of the Executive Board of Royal Vopak until 24 April 2024. Before that, he held various technical and management positions at Shell, including Vice President Unconventional Oil in Houston (United States).