CFSB insider reports option cancellation; 14,000 underlying shares

Rhea-AI Filing Summary

CFSB Bancorp (CFSB) insider filed a Form 4 reporting merger-related conversions. On 10/31/2025, pursuant to a merger agreement, each share of common stock was converted into the right to receive cash of $14.25 per share, without interest.

The filing notes that all unvested restricted stock vested at the effective time and was treated as outstanding for the $14.25 per-share cash payment, net of applicable withholding taxes. In addition, outstanding stock options were cancelled in exchange for cash equal to the excess, if any, of the $14.25 consideration over the option’s exercise price, multiplied by the number of shares subject to the option.

The reporting person, an officer (VP-Retail Banking), reported dispositions that reduced both non-derivative and derivative holdings to 0 following the transactions. One listed option grant covered 14,000 underlying shares at a $7.99 exercise price, which was cancelled per the merger terms.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Kuropatkin Mary

Role VP-Retail Banking

Type	Security	Shares	Price	Value
Disposition	Stock Options	14,000	$0.00	--
Disposition	Common Stock	6,000	$0.00	--
Disposition	Common Stock	2,381	$0.00	--
Disposition	Common Stock	9,940	$0.00	--

Holdings After Transaction: Stock Options — 0 shares (Direct); Common Stock — 0 shares (Direct); Common Stock — 0 shares (Indirect, By ESOP)

Footnotes (1)

1. Pursuant to the Agreement and Plan of Merger dated as of May 20, 2025, by and among Hometown Financial Group, MHC, Hometown Financial Group, Inc., Hometown Financial Acquisition Corp. II, 15 Beach, MHC and the Issuer (the "Merger Agreement"), at the Effective Time (as defined in the Merger Agreement), each issued and outstanding share of Common Stock of the Issuer was converted automatically into the right to receive cash in an amount equal to $14.25 per share without interest (the "Merger Consideration"). Pursuant to the Merger Agreement, all unvested shares of restricted stock automatically vested in full at the Effective Time, and were considered outstanding shares of common stock entitled to receive the Merger Consideration, net of all applicable withholding taxes. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Act of 1934, as amended. Pursuant to the Merger Agreement, each outstanding and unexercised option immediately prior to the Effective Time, whether vested or unvested, was cancelled in exchange for the right to receive an amount in cash equal to the product of (i) the excess, if any, of the Merger Consideration over the per share exercise price of such option, multiplied by (ii) the number of shares of Common Stock then subject to such option, net of all applicable withholding taxes.

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

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X

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^*

Kuropatkin Mary

(Last) (First) (Middle)

15 BEACH STREET

(Street)

QUINCY MA 02170

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CFSB Bancorp, Inc. /MA/ [ CFSB ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP-Retail Banking

3. Date of Earliest Transaction (Month/Day/Year)
10/31/2025

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	10/31/2025		D		6,000(2)	D	(1)	0	D
Common Stock	10/31/2025		D		2,381(3)	D	(1)	0	I	By ESOP
Common Stock	10/31/2025		D		9,940(3)	D	(1)	0	I	By 401(k)

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 Options	$7.99	10/31/2025		D			14,000	03/22/2024	03/22/2033	Common Stock	14,000	(4)	0	D

Explanation of Responses:

1. Pursuant to the Agreement and Plan of Merger dated as of May 20, 2025, by and among Hometown Financial Group, MHC, Hometown Financial Group, Inc., Hometown Financial Acquisition Corp. II, 15 Beach, MHC and the Issuer (the "Merger Agreement"), at the Effective Time (as defined in the Merger Agreement), each issued and outstanding share of Common Stock of the Issuer was converted automatically into the right to receive cash in an amount equal to $14.25 per share without interest (the "Merger Consideration").

2. Pursuant to the Merger Agreement, all unvested shares of restricted stock automatically vested in full at the Effective Time, and were considered outstanding shares of common stock entitled to receive the Merger Consideration, net of all applicable withholding taxes.

3. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Act of 1934, as amended.

4. Pursuant to the Merger Agreement, each outstanding and unexercised option immediately prior to the Effective Time, whether vested or unvested, was cancelled in exchange for the right to receive an amount in cash equal to the product of (i) the excess, if any, of the Merger Consideration over the per share exercise price of such option, multiplied by (ii) the number of shares of Common Stock then subject to such option, net of all applicable withholding taxes.

	/s/ Scott Brown, pursuant to power of attorney	10/31/2025
	** 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.
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FAQ

What did CFSB (CFSB) disclose in this Form 4?

An officer reported that, on 10/31/2025, each share of common stock was converted into the right to receive $14.25 in cash under the merger agreement.

What cash amount per share was paid in the CFSB merger?

The filing states $14.25 per share, without interest, as the merger consideration.

What happened to unvested restricted stock of CFSB?

All unvested restricted shares vested at the effective time and were treated as outstanding for the $14.25 per-share cash payment, net of withholding taxes.

How were CFSB stock options treated?

Each outstanding option was cancelled for cash equal to the excess of $14.25 over the exercise price, multiplied by the number of shares, net of withholding taxes.

Did the reporting person retain any CFSB holdings after the merger?

The filing shows 0 non-derivative and 0 derivative securities beneficially owned following the reported transactions.

What option position was listed in the filing?

A stock option covering 14,000 underlying shares with a $7.99 exercise price was cancelled per the merger terms.