Penumbra, Inc. is a thrombectomy company, which designs, develops, manufactures, and markets innovative medical products. It offers neurovascular thrombectomy and embolization and access technologies, neurosurgical tools, Penumbra LANTERN Delivery Microcatheter, and Penumbra Occlusion Device system. The company was founded by Arani Bose and Adam Elsesser on June 21, 2004 and is headquartered in Alameda, CA.