Satsuma Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, developing novel therapeutic products for the acute treatment of migraines. Its lead product candidate is STS101, a drug-device combination of a proprietary dry-powder formulation of dihydroergotamine mesylate, which is in ASCEND Phase III clinical trials and can be self-administered with proprietary pre-filled, single-use, and nasal delivery device. The company was incorporated in 2016 and is headquartered in South San Francisco, California.