The ISC’s headquarters is based in Paris and ensures the day-to-day planning and operations under the guidance of the elected Governing Board. The ISC has Regional Offices with their own secretariat that is staffed locally.

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CEO and Directors

Heide Hackmann

Chief Executive Officer

Mathieu Denis

Science Director

Charles Erkelens

Operations Director

Alison Meston

Communications Director


Sarah Moore

Science Officer

Katsia Paulavets

Senior Science Officer

Anda Popovici

Junior Science Officer

Vivi Stavrou

CFRS Executive Secretary / Senior Science Officer

Anne-Sophie Stevance

Senior Science Officer

Megha Sud

Science Officer


Lizzie Sayer

Communications Officer

Zhenya Tsoy

Junior Digital Communications Officer

Finance and Administration

Yun-Kang Ahn

IT Officer

Maureen Brennan

Administrative Officer

Mayette Geronimo

Financial Officer

Alexandra Guennec

Human Resources Officer

Eric Leparmentier

General Services

Arno de Marchi

Junior Administrative Officer

Natacha de Marchi


Anne Thieme

Membership Liaison Officer

Miia Ylöstalo-Joubert

Administrative Officer

Special Appointments

Flavia Schlegel

Special Envoy for Science in Global Policy

Roger Ridley

CFRS Executive Secretary


Husam Ibrahim