4SC AG operates is a biotech company that focuses on research and development. It operates through Development and Discovery and Collaborative Business segments. The Development segment comprises the clinical and preclinical development work for drug candidates. The Discovery and Collaborative Business segment engages in the drug discovery and early-stage research plus subsequent commercialization, in particular through service business and research collaborations related to drug discovery and optimization. The company was founded by Ulrich Dauer, Daniel Vitt, Stefan Busemann, and Klaus-Peter Gulden in1997 and is headquartered in Planegg-Martinsried, Germany.