Gregory Simonnin

Director, EY-Parthenon Switzerland Sustainability Lead

Sustainability leader specialized in climate strategies, with a focus on complex scope 3 assessments. Dual consulting and industry experience.

Gregory is a seasoned sustainability strategist specializing in integrating climate and environmental considerations into corporate strategy and transactions. His extensive expertise lies in managing complex environmental footprints, particularly Scope 3 emissions, strategic supplier engagement programs, Life Cycle Assessments (LCA) and orienting R&D projects toward sustainable innovation. This helps him guiding organizations through the complexities of sustainability within the context of mergers, acquisitions, and divestitures, focusing on value creation and risk mitigation. By influencing decision-making at all organizational levels, Gregory positions companies to thrive in an increasingly resource- and climate-constrained world.

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