Altasciences Co. Inc., of Laval, Quebec, appointed Joseph A. Francisco chief toxicologist.
Arch Oncology Inc., of Brisbane, Calif., appointed Alessandra Cesano, Kenneth C. Anderson, Kevin Harrington, Jason Luke and John M. Pagel to its scientific advisory board. Cesano will serve as chair.
Catalyst Biosciences Inc., of South San Francisco, appointed Charles Democko senior vice president, regulatory affairs.
Chimerix Inc., of Durham, N.C., appointed Allen Melemed chief medical officer.
Fibrogen Inc., of San Francisco, appointed Thane Wettig chief commercial officer.
Seres Therapeutics Inc., of Cambridge, Mass., appointed Terri Young executive vice president, chief commercial and strategy officer, effective June 29, 2020.