William F. Feehery, Ph.D., served as Chief Executive Officer of Certara from June 2019 until the end of 2025, when he entered a separation and consulting agreement and was succeeded by Jon Resnick effective January 1, 2026; he also served on the board from 2019. Before Certara he was President of DuPont Industrial Biosciences from 2013 to 2019, having joined DuPont in 2002, with earlier experience in venture capital and at The Boston Consulting Group. He holds a Ph.D. in chemical engineering and an MBA from MIT, was a Churchill Scholar at Cambridge University, and has served on the board of West Pharmaceutical Services.