Stew joined C4 Therapeutics in May 2016 and is the Chief Scientific Officer overseeing Discovery Sciences, Chemistry and Alliance Management. Prior to joining C4 Therapeutics, Stew held senior leadership roles at the Broad Institute and previously spent fifteen years at AstraZeneca in roles of increasing responsibility across target validation, drug discovery, and clinical candidate support. Stew started his career at Hoffmann-La Roche after completing an NIH Post-Doctoral Fellowship at Harvard Medical School. Stew holds a Ph.D. in Organic Chemistry from the California Institute of Technology and a B.A. in Chemistry from the University of Vermont.