Mark Koehler is a seasoned professional in drug substance development with extensive experience in the biopharmaceutical industry. Currently serving as Senior Director of Drug Substance Development at Emergent BioSolutions since August 2020, Mark Koehler previously held leadership roles at Paragon Bioservices, Novavax, Teva Biopharmaceuticals, CoGenesys, Pfizer, ImClone Systems, R W Johnson Pharmaceutical Research Institute, and Centocor. Mark Koehler's career trajectory includes positions from Associate Scientist to Senior Director, complemented by a BS in Biology from Penn State University obtained in 1988.