Gregory Cost | Vice President, Distinguished Scientific Fellow
Addition Therapeutics

Greg serves as VP, Distinguished Scientific Fellow, supporting Addition’s scientific innovation and long-term R&D vision. With deep expertise in molecular biology and gene editing, he brings more than two decades of experience leading high-impact scientific programs across the biotechnology industry. Prior to joining Addition, Greg held scientific and leadership roles at Metagenomi, Casebia Therapeutics, and Sangamo BioSciences, where he advanced next-generation genetic medicine platforms. Greg earned a Ph.D. from the Johns Hopkins University School of Medicine and completed postdoctoral training at UC Berkeley and the Institut Pasteur in Paris. He has a BS in Chemistry from Xavier University and is passionate about translating cutting-edge science into transformative therapies for patients.