Benjamin Stewart

London, UK

Grantmaker

Bio

Updated 03/22/26

Ben Stewart is an AI Program Officer at Longview Philanthropy, based in London, UK, where he conducts grant investigations focused on artificial intelligence. He holds an MD and undergraduate degrees in philosophy, neuroscience, and international relations, all from the University of Sydney. Prior to Longview, he was a Research Fellow on Open Philanthropy's Global Catastrophic Risks Cause Prioritization team and a Charity Entrepreneurship incubatee. He has conducted freelance research for the Future of Humanity Institute, Stanford Existential Risk Initiative, Lead Exposure Elimination Project, and Open Philanthropy, and won the inaugural Open Philanthropy Cause Exploration Prize for research on organophosphate pesticides and developmental neurotoxicity. He received Long-Term Future Fund grants to upskill in biosecurity research and prioritisation, including completing Imperial College London's Infectious Disease Modelling specialisation, and to develop data science and forecasting skills for GCBR research. He is active on the EA Forum under the username BenStewart, where he has written on biosecurity topics including sequence obfuscation and infectious disease modelling.