Satsuma Pharmaceuticals, Inc., a development-stage biopharmaceutical company, develops novel therapeutic products for the acute treatment of migraines. The company's product candidature includes STS101, a drug-device combination of a proprietary dry-powder formulation of dihydroergotamine mesylate, which can be self-administered with proprietary pre-filled, single-use, and nasal delivery device. Satsuma Pharmaceuticals, Inc. was incorporated in 2016 and is headquartered in South San Francisco, California. As of June 8, 2023, Satsuma Pharmaceuticals, Inc. operates as a subsidiary of Shin Nippon Biomedical Laboratories, Ltd.