Gregory Simonnin

Gregory Simonnin specializes in developing and implementing climate and environmental strategies for large organizations, focusing on managing complex environmental footprints and influencing sustainability goals. Currently, as the Director of Sustainability at EY-Parthenon and the Head of Sustainability for EY's Strategy and Transactions branch in Switzerland, Gregory contributes to climate strategies and meaningful change. Previously, Gregory has held roles such as Global Environmental Sustainability Manager at Givaudan and Senior Consultant at Quantis, where they led various projects in sustainability and corporate climate footprints. Gregory earned a Master of Business Administration from Imperial College London, an MSc in Environmental Sciences from the University of Geneva, and a BSc in Biology from the same institution.