Stephen B. Ruddy is Senior Vice President and Chief Technical Officer of Deciphera Pharmaceuticals. Dr. Ruddy joined Deciphera in 2018 and has more than 25 years of global pharmaceutical management and leadership experience in small-molecule and biologics development and manufacturing. Prior to joining Deciphera, he served as Vice President of Pharmaceutical Development at TESARO, Inc., an oncology-focused biopharmaceutical company, where he built and led a chemistry, manufacturing, and controls (CMC) organization that enabled multiple small-molecule new drug application (NDA) and marketing authorization application (MAA) approvals and advanced multiple biologic immuno-oncology product candidates from discovery into clinical development. Before joining TESARO, Dr. Ruddy served as Senior Director, Technology Development & Operations at ViroPharma Inc., which was later acquired by Shire plc. Prior to joining ViroPharma, he served in CMC leadership roles of increasing responsibility at Elan Corporation plc, Merck & Co., Inc., NanoSystems LLC, and Sterling Winthrop Pharmaceuticals. Dr. Ruddy received a B.S. in Pharmacy and a Ph.D. in Pharmaceutics, both from the University of North Carolina at Chapel Hill.