[Form 4] Catalyst Bancorp, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Catalyst Bancorp director Matthew L. Scruggins received new equity awards. He was granted 1,058 shares of common stock at no cost, increasing his directly held common stock to 25,912 shares, and he also holds 10,000 shares indirectly through his spouse.

He was additionally granted stock options for 2,645 shares of common stock at an exercise price of $15.9600 per share, expiring on June 10, 2036. These shares and options vest at a rate of 20% per year starting on specified future dates, including June 10, 2027. Scruggins also retains previously awarded options covering 2,645 shares at $12.0800 per share expiring in 2035 and 21,160 shares at $13.3000 per share expiring in 2032.

Insider Trade Summary

5 transactions reported

Mixed 5 txns

Insider Scruggins Matthew L.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	2,645	$0.00	--
Grant/Award	Common Stock	1,058	$0.00	--
holding	Stock Option (Right to Buy)	--	--	--
holding	Stock Option (Right to Buy)	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 2,645 shares (Direct, null); Common Stock — 25,912 shares (Direct, null); Common Stock — 10,000 shares (Indirect, By spouse)

Footnotes (1)

1. Represents the grant of shares pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that vest at 20% per year commencing on June 10, 2027. Includes 847 shares granted pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that reflect the unvested portion of a grant amount originally covering 1,058 shares that commenced vesting 20% per year on June 10, 2026. Includes 3,388 shares granted pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that reflect the unvested portion of a grant amount originally covering 8,464 shares that commenced vesting 20% per year on September 1, 2023. These options are vesting at a rate of 20% per year that commenced on September 1, 2023. These options vest at a rate of 20% per year commencing on June 10, 2026. These options vest at a rate of 20% per year commencing on June 10, 2027.

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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
Estimated average burden
hours per response:			0.5

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^*

Scruggins Matthew L.

(Last) (First) (Middle)

C/O CATALYST BANCORP INC

235 N COURT ST

(Street)

OPELOUSAS LOUISIANA 70570

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Catalyst Bancorp, Inc. [ CLST ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/10/2026

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

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

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

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	06/10/2026		A		1,058	A	$0	25,912(1)(2)(3)	D
Common Stock								10,000	I	By spouse

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
Stock Option (Right to Buy)	$13.3							(4)	09/01/2032	Common Stock	21,160		21,160	D
Stock Option (Right to Buy)	$12.08							(5)	06/10/2035	Common Stock	2,645		2,645	D
Stock Option (Right to Buy)	$15.96	06/10/2026		A		2,645		06/10/2027(6)	06/10/2036	Common Stock	2,645	$0	2,645	D

Explanation of Responses:

1. Represents the grant of shares pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that vest at 20% per year commencing on June 10, 2027.

2. Includes 847 shares granted pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that reflect the unvested portion of a grant amount originally covering 1,058 shares that commenced vesting 20% per year on June 10, 2026.

3. Includes 3,388 shares granted pursuant to the Issuer's 2022 Recognition and Retention Plan and Trust Agreement that reflect the unvested portion of a grant amount originally covering 8,464 shares that commenced vesting 20% per year on September 1, 2023.

4. These options are vesting at a rate of 20% per year that commenced on September 1, 2023.

5. These options vest at a rate of 20% per year commencing on June 10, 2026.

6. These options vest at a rate of 20% per year commencing on June 10, 2027.

	/s/ Jutta Codori by P.O.A. for Matthew L. Scruggins	06/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)