Catalyst Pharmaceuticals, Inc. is a commercial-stage biopharmaceutical company. The Company is focused on in-licensing, developing, and commercializing novel medicines for patients living with rare diseases. With the patient focus, the Company is engaged in developing a robust pipeline of cutting-edge, medicines for rare diseases. The Company’s New Drug Application for FIRDAPSE (amifampridine) tablets 10 milligrams (mg) for the treatment of adults with Lambert-Eaton myasthenic syndrome (LEMS). The Company’s FIRDAPSE is commercially available in the United States as a treatment for adults with LEMS. The FIRDAPSE is also used for the treatment of adult patients in Canada with LEMS. The Company is also focused on initiating clinical trials of amifampridine in other ultra-rare neuromuscular conditions.