Athersys, Inc., a clinical-stage biotechnology company, develops therapies in the regenerative medicine area. Its stem cell product candidate is the MultiStem cell therapy, an allogeneic stem cell product for the treatment of indications in the neurological, inflammatory and immune, and cardiovascular disease areas, as well as other critical care conditions. The company was founded in 1995 and is headquartered in Cleveland, Ohio. On September 24, 2024, the voluntary petition of Athersys, Inc. for reorganization under Chapter 11 was converted to Chapter 7. It had filed for Chapter 11 bankruptcy along with its affiliates on January 5, 2024.