Professor Stephen Locarnini is the co-founder and Joint Secretary of the not-for-profit organization, the Coalition to Eradicate Viral Hepatitis in Asia Pacific Region (CEVHAP). Professor Locarnini is also the Director of the World Health Organization Regional Reference Laboratory for Hepatitis B at the Victorian Infectious Diseases Reference Laboratory, where he has worked since 1989.

Stephen O'Brien heads the United Nations Office for the Coordination of Humanitarian Affairs.

Stephen Omollo is the CEO of Plan International.

Stephen Rea joined ViiV Healthcare’s executive team in 2017 as the head of external affairs and communications. He is responsible for the company’s strategic approach to communications, government affairs, global health, investor relations, and community partnerships. Rea has a specific focus on improving outcomes for children living with HIV and is accountable for the modernization of employee engagement across the HIV business.

Stephen Suffian is currently pursuing a Ph.D. in electrical and computer engineering at Villanova University. He is researching information-driven flexibility options for electricity grids with high penetration of variable and uncertain renewable energy sources.

Stephen Turner is a former senior manager at WaterAid. He joined the organization in 1990 as a member of the senior management team, responsible for growing the charity through strategic planning and fundraising, and was heavily involved with the campaign to see the United Nations recognize sanitation as a target indicator for the Millennium Development Goals before retiring in 2008. He previously worked as an education officer, field director and regional manager for VSO.

Stephen Twigg is a Labour MP and chair of the U.K.’s International Development Select Committee. He was previously shadow secretary of state for education and served as a government minister from 2001-2005, first as deputy leader of the House of Commons and later as an education minister.

Dr. Stephen Wall is a pediatrician, neonatologist, and public health expert. For the past 15 years, he has been senior technical advisor to Save the Children's Saving Newborn Lives Initiative, becoming director in 2018. He is currently senior director of newborn health at Save the Children where he has overseen global and country-based efforts to improve newborn survival through research and innovation, implementation research, and advocacy for policy change and program development. Prior to joining Save the Children, Wall served as a neonatologist and perinatal epidemiologist at the University of Chicago Pritzker School of Medicine and at Northwestern University Medical School. He received his medical education at the University of North Carolina at Chapel Hill, followed by pediatrics and neonatology training at University of California-San Francisco, and neonatology fellowship training at Harvard.

Stephen Wyber is a volunteer lead for the IEEE Internet Initiative Digital Literacy Working Group. He is the manager of policy and advocacy overseeing the team within the International Federation of Library Associations and Institutions’ headquarters working on the policy environment in which libraries work.

Stephen M. Rudy is CEO at Gradian Health Systems. He has nearly 35 years of experience in medical technology companies, including executive-level roles in marketing, sales and business development. Prior to joining Gradian, he was founder and CEO of Fluid Medical, CEO of Sinia Corp., senior vice president of Somnus Medical Technologies (now Olympus Medical) and vice president of marketing for VidaMed (now Medtronic) and Applied Imaging Corp. He holds an MBA from the Stanford Graduate School of Business and a B.A. from the Johns Hopkins University.