Brian Elsbernd - Dec 3, 2021 Form 4 Insider Report for CATALYST PHARMACEUTICALS, INC. (CPRX)

Role: Chief Compliance/Legal Officer
Signature: /s/ Brian Elsbernd
Stock symbol: CPRX
Transactions as of: Dec 3, 2021
Transactions value $: $0
Form type: 4
Date filed: 12/6/2021, 04:16 PM
Next filing: Dec 30, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CPRX	Common Stock, par value $0.001 per share	Options Exercise		+14.7K	+100.01%		29.3K	Dec 3, 2021	Direct	F1
transaction	CPRX	Common Stock, par value $0.001 per share	Tax liability		-3.57K	-12.17%		25.8K	Dec 3, 2021	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CPRX	Restricted Stock Units	Options Exercise	$0	-14.7K	-1.83%	$0.00	787K	Dec 3, 2021	Common Stock	14.7K		Direct	F1, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of the Registrant's common stock upon vesting.
F2	Shares withheld by the Registrant to satisfy applicable withholding taxes upon vesting of restricted stock units.
F3	Derivative securities vest in equal tranches, 1/3rd on December 2, 2020, 1/3rd on December 2, 2021 and 1/3rd on December 2, 2022.
F4	Shares of common stock are required to be delivered to the Reporting Person within sixty days of vesting. The second tranche of shares was delivered on December 3, 2021.