Sébastien Roumegous
Sébastien Roumegous is a soil specialist and impact entrepreneur focused on scaling regenerative agriculture. As CEO of BIOSPHERES, Europe’s leading regenerative agriculture company, he supports businesses and public actors in transitioning toward high-performing, ecosystem-restoring farming systems.
With over 15 years of experience across 22 countries and 200,000 hectares in transition, his work combines technical expertise with a pragmatic, field-driven approach to improve soil health, biodiversity, and farmers’ livelihoods. Raised in a farming environment in southern France, he brings a grounded, results-oriented perspective to large-scale agricultural transformation. He recently published his first book on regenerative agriculture.
Olivier Marchand
Olivier Marchand is Regenerative Agriculture Manager at Nestlé, with over 20 years of experience driving sustainability, quality, and responsible practices across value chains.
With a strong background in purchasing, quality assurance, and agriculture, he has worked across Europe, Africa, Latin America, and Asia, bringing a global and cross-cultural perspective. He focuses on strengthening traceability, sustainability, and trust, helping meet growing consumer expectations around product origin, production methods, and social responsibility.