Diem Nguyen, Ph.D.
Diem Nguyen, Ph.D., began serving as Chief Executive Officer and as a Director in January 2024. Prior to joining SIGA, Dr. Nguyen joins SIGA from Xalud Therapeutics, a clinical stage biotechnology company developing treatments for inflammatory diseases, including pain associated with osteoarthritis, and neurodegenerative diseases, where she served as CEO. Prior to Xalud, Dr. Nguyen served as executive vice president of biopharma at PPD Inc., a leading global clinical research organization providing integrated drug development services. From 2009-2018, she served in several roles at Pfizer including global president, Americas, Pfizer Essential Health, where she was responsible for diverse commercial businesses in the U.S., Latin America, Canada, and Puerto Rico representing more than $11 billion in annual revenue. She earned a Ph.D. in biochemistry and molecular genetics at the University of Virginia, as well as an M.B.A. from Darden Graduate School of Business Administration.