Hans van Eenennaam is CEO and founder of IMMIOS and Chief Scientific Officer at Sairopa. Previously, he served as Chief Scientific Officer of AIMM Therapeutics and as Executive Vice President of Antibody Research and Site Head for Aduro Biotech Europe. In 2015, Aduro acquired BioNovion, a company advancing novel antibody therapies for immuno- oncology, which van Eenennaam co-founded in 2011 and also served as its Chief Operational Officer. He is a (co-)inventor of pembrolizumab (Keytruda^TM), BION-1301 (Zigakibart), MK-5890, ADU-1805 and ADU-1604. Earlier in his career, he held different positions at Organon, Schering-Plough and MSD/Merck.

Hans also serves on the Board of Directors of Lygature. Dr. van Eenennaam is a chemist by training and received his doctorate in autoimmune biochemistry from Radboud University in Nijmegen, Netherlands.