Sébastien Haslé is the chief executive officer of international organisations health at Cigna Healthcare. He has held this position since January 2024. He joined Cigna in 2008 and spent nine years as chief risk officer. He then was appointed managing director from May 2017 until the beginning of 2020, and chief financial officer until the beginning of 2024. Sébastien is responsible for the overall management, growth, and profitability of Cigna’s international organisation's health business. He leads this combined structure, which spans international organizations (IGOs and NGOs) and governments.

Sébastien Turbot is a French social entrepreneur who has served as the curator and the global director at Qatar Foundation's World Innovation Summit for Education since May 2012. He is also a fellow at the Royal Society for the encouragement of arts, manufactures and commerce, an advisory board member at Samuel Hall Consulting, an independent research and strategic consulting firm, and Turbot is an adjunct professor at the Paris School of International Affairs, Sciences-Po, Paris. Prior to this he worked as editorial director at TEDx Paris, and founded Sayara Strategies a social communication agency during the decade he spent in Afghanistan.

Seema is a member of the communications leadership council at Johnson & Johnson and responsible for communicating the company’s commitment to innovation and global health. She works closely with Johnson & Johnson chief scientific officer and worldwide chairman of pharmaceuticals, Dr. Paul Stoffels, as well as communication leaders in Corporate and R&D. Seema also serves as the communication leader for the Worldwide R&D Council and several innovation centers.

Seiko Kanda is a program coordinator at World Vision Japan. Before this role, he worked with the International Cooperation Bureau of the Ministry of Foreign Affairs of Japan. He currently leads the organization’s Faith and Development Task Force, aiming to better integrate the faith dimension into project design and management.

Sekai Mudonhi is an agronomist and the country representative for Catholic Relief Services (CRS) in Malawi. CRS is the international aid agency of the U.S. Catholic Church.

Selamawit Hirpa is a research fellow at the University of Addis Ababa, School of Public Health. She is part of the Ethiopia research team under the Global Challenges Research Fund Tobacco Control Capacity Program. Her research focuses on smoke free legislation, tobacco taxation, and tobacco industry interference.

Seleman Yusuph Kitenge works as a communications and advocacy officer at the African Union Development Agency-NEPAD. He is a specialist in global peace and security, diplomacy and regional development affairs. He is a recipient of numerous national, continental, and global recognition for his engagements in peace, security, and development matters.

Dr. Sema Sgaier is co-founder and executive director of Surgo Foundation, a privately funded action tank whose mission is combining a customer obsessed agenda with a thinking in systems to solve complex global development problems. She works at the intersection of behavior, data, and technology. Previously at the Bill & Melinda Gates Foundation, she led large-scale health programs in India and Africa. She is faculty at the Harvard T.H. Chan School of Public Health. She was selected as a Rising Talent by the Women’s Forum for the Economy and Society. Sema has a Ph.D. in neuroscience.

Seren Frost Fryatt is the founder and executive director of Life And Change Experienced through Sports. A former athletic trainer, she has witnessed in Liberia the tremendous impact sports can have on vulnerable youth.

Serena Stepanovic is the senior director, Food Security and Livelihoods sector at World Vision United States. She has more than 23 years of international development experience, with a specific focus on serving rural, smallholder farming communities since 2007. She brings to her work a passion for strengthening local food systems, promoting social and behavior change and fostering innovation.