CATALYST PHARMACEUTICALS, INC. — Director's Dealing 2025

Dec 30, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CATALYST PHARMACEUTICALS, INC. (CPRX)
CIK: 0001369568
Period of Report: 2025-12-29

Reporting Person: DENKHAUS DONALD A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-29	Common Stock, par value $0.001 per share	M	1334	—	Acquired	498773	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-29	Restricted Stock Units	$	M	1334	Disposed		Common Stock (1334)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of the Registrant's common stock upon vesting.

F2: Derivative securities vested in equal tranches, 1/3rd on December 27, 2023, 1/3rd on December 27, 2024 and 1/3rd on December 27, 2025.

F3: Shares of common stock are required to be delivered to the Reporting Person within sixty days of vesting. The final tranche of shares was delivered on December 29, 2025.