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
Facilities Committee

Ron Steijn is Dutch and a ZIS alumni parent. He works in the pensions and benefits sector, and joined the Board in 2016.

Essa Al Saleh

Essa Al-Saleh
Community Relations Committee

Essa 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 Amiro do Vale

Isabel Almiro do Vale
Strategy Committee

Isabel is Portuguese and British and is a ZIS Parent. She works in marketing and joined the Board in 2018.

Philippe Brenninkmeijer

Philippe A. L. Brenninkmeijer
Governance Committee

Philippe is Dutch and is a ZIS parent.  He works in retail, real estate and investment and joined the Board in 2018.

Marcel Cobuz

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

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

Mariana Grigorian
Strategy Committee

Mariana Grigorian is Spanish and Armenian and a ZIS parent. She works in career guidance and joined the Board in 2020.

Alexandra Utterman

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.

Carl Hollitscher

Carl Hollitscher
Community Relations Committee

Carl Hollitscher is Austrian and Swiss and a ZIS parent. He works in asset management and joined the Board in 2020.

Erik Kaas

Erik Kaas
Vice-Chair
Finance Committee

Erik Kaas is German and Swiss and is a ZIS parent. He is a partner in a market investment management company and joined the Board in 2017.

Suzanne Rapetti-Hunsicker

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 Liftschitz

Claudia Scheiner
Chair 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

Kerstin Strubel
Community Relations Committee 

Kerstin Strubel is German and a ZIS parent. She is a marketing capability consultant and joined the Board in 2019.

George Terziev

George Terziev
Chair Finance Committee

George Terziev is Swiss and Bulgarian and a ZIS parent. He works in finance and project management and joined the Board in 2013.

Lemeng Zhang

Lemeng Zhang
Finance Committee
Chair Strategy Committee

Lemeng Zhang is Chinese and a ZIS parent. She has experience in consulting and investment management and joined the Board in 2017.