Exhibit 31.4
Certification of Principal Financial Officer
I, Michael W. Kalb, certify that:
| 1. | I have reviewed this Amendment No. 1 to Annual Report on Form 10-K of Catalyst Pharmaceuticals, Inc. |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| Date: April 30, 2026 |
| /s/ Michael W. Kalb |
| Michael W. Kalb |
| Executive Vice President and Chief Financial Officer |
| (Principal Financial Officer) |