Catalyst Pharmaceuticals, Inc.
A Florida biopharma that targets rare diseases, Catalyst Pharmaceuticals sells three FDA-approved drugs: FIRDAPSE for Lambert-Eaton myasthenic syndrome, a rare nerve-muscle disorder; AGAMREE for Duchenne muscular dystrophy; and FYCOMPA for epilepsy. It began in 2002 working on addiction therapies before pivoting to rare neuromuscular conditions, carving out a niche in medicines with few existing options.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 26, 2026 |
| STATE STREET CORPORATION | 13GPassive | 5.2% | 6.41M | Nov 10, 2025 |
| BlackRock, Inc. | 13G/APassive | 13.9% | 16.89M | Apr 28, 2025 |
| Deerfield Mgmt, L.P. | 13G/APassive | 2.63% | 3.13M | Feb 13, 2025 |
| Deerfield Management Company, L.P. | 13G/APassive | 2.63% | 3.13M | Feb 13, 2025 |
| Deerfield Partners, L.P. | 13G/APassive | 2.63% | 3.13M | Feb 13, 2025 |
| James E. Flynn | 13G/APassive | 2.63% | 3.13M | Feb 13, 2025 |