FSBW Form 4: Insider option exercise and updated holdings

Rhea-AI Filing Summary

FS Bancorp (FSBW) reported an insider transaction on a Form 4. The President exercised stock options (Code M) for 3,090 shares of common stock at $21.35 per share on 11/05/2025.

Following the transaction, reported beneficial ownership includes 106,340 shares held directly, and indirect holdings of 10,853 shares by ESOP, 5,600 shares by spouse's IRA, and 22,124 shares by IRA. Derivative holdings reported following the transaction include 70,500 stock options.

Insider Trade Summary

3,090 shares exercised/converted

Mixed 6 txns

Insider Mullet Matthew D.

Role President

Type	Security	Shares	Price	Value
Exercise	Stock Options (Right to Buy)	3,090	$0.00	--
Exercise	Common Stock	3,090	$21.35	$66K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Options (Right to Buy) — 70,500 shares (Direct); Common Stock — 106,340 shares (Direct); Common Stock — 10,853 shares (Indirect, BY ESOP)

Footnotes (1)

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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^*

Mullet Matthew D.

(Last) (First) (Middle)

C/O FS BANCORP, INC.

6920 220TH STREET SW

(Street)

MOUNTLAKE TERRACE WA 98043

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FS Bancorp, Inc. [ FSBW ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/05/2025

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	11/05/2025		M		3,090	A	$21.35	106,340	D
Common Stock								954	D
Common Stock								10,853	I	BY ESOP
Common Stock								5,600	I	By spouse's IRA
Common Stock								22,124	I	By IRA

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 (Right to Buy)	$21.35	11/05/2025		M			3,090	08/15/2021	08/15/2030	Common Stock	3,090	$0	70,500	D

Explanation of Responses:

	/s/Matthew D. Mullet	11/07/2025
	** 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.
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.

FAQ

What did FSBW’s President report on this Form 4?

An option exercise (Code M) for 3,090 shares at an exercise price of $21.35 on 11/05/2025.

What is the exercise price for the options exercised by FSBW’s President?

The exercise price disclosed is $21.35 per share.

How many FSBW shares does the insider hold directly after the transaction?

Reported direct beneficial ownership is 106,340 shares.

What indirect FSBW holdings were reported after the transaction?

Indirect holdings include 10,853 shares by ESOP, 5,600 by spouse's IRA, and 22,124 by IRA.

How many derivative securities remain after the transaction?

The filing reports 70,500 stock options beneficially owned following the transaction.

What does transaction code 'M' indicate on a Form 4?

Code M indicates the exercise of a derivative security, such as a stock option, into common stock.