Where students take their own path
Board of Trustees
The ZIS Board of Trustees is the guardian of the school's mission. It is the Board's responsibility to ensure that the mission is relevant and vital to the community it serves and to monitor the success of the school in fulfilling its mission.
Below are details of the ZIS Board of Trustees.
Ron Steijn
Chairman of the Board
Governance Committee
Ron Steijn is Dutch and a ZIS alumni parent. He works in the pensions and benefits sector, and joined the Board in 2016.
Noelle Ahlberg Kleiterp
Governance Committee
Noelle Ahlberg Kleiterp is American and Dutch and a ZIS parent. She has experience in the finance sector and in consulting and joined the Board in 2021.
Essa Al-Saleh
Governance Committee
Essa Al-Saleh is Kuwaiti and American and a ZIS alumni and current parent. He works in the logistics, strategy, advisory and investment areas and joined the Board in 2020.
Isabel Almiro do Vale
Community Relations Committee
Isabel Almiro do Vale is Portuguese and British and is a ZIS Parent. She works in marketing and joined the Board in 2018.
Marcel Cobuz
Facilities Committee
Marcel Cobuz is French and Romanian and a ZIS parent. He works for a global building materials and solutions company and joined the Board in 2019.
Chicco di Stasi
Finance Committee
Chicco di Stasi is Italian and a ZIS parent. He works in banking and joined the Board in 2020.
Mariana Grigorian
Board Vice-Chair
Community Relations Committee
Corporate/Community Partnerships Committee
Mariana Grigorian is Spanish and Armenian and a ZIS parent. She works in career guidance and joined the Board in 2020.
Alexandra Hallen Utterman
Board Secretary
Chair Governance Committee
Alexandra Hallen Utterman is American and a ZIS parent. She has experience in investment management and joined the Board in 2017.
Gijs Hilgers
Finance Committee
Gijs Hilgers is Dutch and a ZIS parent. He has experience in banking and joined the Board in 2021.
Carl Hollitscher
Chair Community Relations Committee
Carl Hollitscher is Austrian and Swiss and a ZIS parent. He works in asset management and joined the Board in 2020.
Suzanne E. Rapetti-Hunsicker
Chair Facilities Committee
Suzanne E. Rapetti-Hunsicker is American and Swiss, a AISZ (ZIS) alumna and alumni parent. She is a partner in a project management and consulting company and joined the Board in 2019.
Claudia Scheiner
Community Relations Committee
Claudia Scheiner is Swiss and a ZIS parent. She is a mediator and a justice of the peace and joined the Board in 2017.
Kerstin Strubel
Corporate/Community Partnerships Committee
Kerstin Strubel is German and a ZIS parent. She is a marketing capability consultant and joined the Board in 2019.
George Terziev
Chair Finance Committee
George Terziev is Swiss and Bulgarian and a ZIS alumni parent. He works in finance and project management and joined the Board in 2013.
Jonathan Toretta
Corporate/Community Partnerships Committee
Jonathan Toretta is Swiss and American and a ZIS parent. He works in the science and technology sector and joined the Board in 2021.
Lemeng Zhang
Chair Corporate/Community Partnerships Committee
Finance Committee
Lemeng Zhang is Chinese and a ZIS parent. She has experience in consulting and investment management and joined the Board in 2017.