X0508 4 2025-06-06 0 0001369568 CATALYST PHARMACEUTICALS, INC. CPRX 0000929985 MCENANY PATRICK J 355 ALHAMBRA CIRCLE, SUITE 801 CORAL GABLES FL 33134 1 0 0 1 Chairman of Board of Directors 0 Common Stock, par value $0.001 per share 2025-06-06 4 S 0 28252 25.945 D 4453450 D Common Stock, par value $0.001 per share 2025-06-09 4 S 0 171748 26.110 D 4281702 D Shares were sold on the open market for personal reasons and not as a result of any disagreement with the Company. Represents a weighted average price for the shares sold. Shares were sold in a range from $25.906 to $25.95 per share. Represents a weighted average price for the shares sold. Shares were sold in a range from $25.765 to $26.46 per share. /s/ Patrick J. McEnany 2025-06-10