CPRX insider reports new option and RSU awards in Form 4 filing

Rhea-AI Filing Summary

Catalyst Pharmaceuticals (CPRX) reported equity transactions by its Chief Strategy Officer on a Form 4. On 11/21/2025, the officer acquired 5,603 shares of common stock through the exercise of derivative awards and had 1,364 shares withheld to cover taxes, leaving 45,320 shares of common stock owned directly.

The filing also shows new derivative awards dated 11/20/2025, including options to purchase 106,873 shares of common stock at an exercise price of $22.77 per share and 32,257 restricted stock units (RSUs). The options and RSUs generally vest in three equal annual tranches from November 20, 2026 through November 20, 2028. Additional RSUs that vest in thirds each year from November 21, 2025 to November 21, 2027 are also reported.

Insider Trade Summary

5,603 shares exercised/converted

Mixed 5 txns

Insider Sundaram Preethi

Role Chief Strategy Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	5,603	$0.00	--
Exercise	Common Stock, par value $0.001 per share	5,603	$0.00	--
Tax Withholding	Common Stock, par value $0.001 per share	1,364	$0.00	--
Grant/Award	Options to purchase common stock	106,873	$0.00	--
Grant/Award	Restricted Stock Units	32,257	$0.00	--

Holdings After Transaction: Restricted Stock Units — 811,959 shares (Direct); Common Stock, par value $0.001 per share — 46,684 shares (Direct); Options to purchase common stock — 785,305 shares (Direct)

Footnotes (1)

1. Each restricted stock unit represents a contingent right to receive one share of the Registrant's common stock upon vesting. Shares withheld by the Registrant to satisfy applicable withholding taxes upon vesting of restricted common stock. Derivative securities vest in equal tranches, 1/3rd on November 20, 2026, 1/3rd on November 20, 2027 and 1/3rd on November 20, 2028. Shares of common stock will be delivered to the Reporting Person upon vesting. Derivative securities vest in equal tranches, 1/3rd on November 21, 2025, 1/3rd on November 21, 2026, and 1/3rd on November 21, 2027. Shares of common stock are required to be delivered to the Reporting Person within sixty days of vesting. The first tranche of shares was delivered on November 21, 2025.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sundaram Preethi

(Last) (First) (Middle)

355 ALHAMBRA CIRCLE

SUITE 801

(Street)

CORAL GABLES FL 33134

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CATALYST PHARMACEUTICALS, INC. [ CPRX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Strategy Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/20/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.001 per share	11/21/2025		M		5,603	A	(1)	46,684	D
Common Stock, par value $0.001 per share	11/21/2025		F		1,364	D	(2)	45,320	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Options to purchase common stock	$22.77	11/20/2025		A		106,873		(3)	11/20/2032	Common Stock	106,873	$0	785,305	D
Restricted Stock Units	(4)	11/20/2025		A		32,257		(3)	(4)	Common Stock	32,257	$0	817,562	D
Restricted Stock Units	(4)	11/21/2025		M			5,603	(5)	(6)	Common Stock	5,603	$0	811,959	D

Explanation of Responses:

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

2. Shares withheld by the Registrant to satisfy applicable withholding taxes upon vesting of restricted common stock.

3. Derivative securities vest in equal tranches, 1/3rd on November 20, 2026, 1/3rd on November 20, 2027 and 1/3rd on November 20, 2028.

4. Shares of common stock will be delivered to the Reporting Person upon vesting.

5. Derivative securities vest in equal tranches, 1/3rd on November 21, 2025, 1/3rd on November 21, 2026, and 1/3rd on November 21, 2027.

6. Shares of common stock are required to be delivered to the Reporting Person within sixty days of vesting. The first tranche of shares was delivered on November 21, 2025.

	/s/ Preethi Sundaram	11/24/2025
	** Signature of Reporting Person	Date
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