FS Bancorp CEO acquires shares via stock plan

FS Bancorp, Inc. President and CEO Matthew D. Mullet reported an acquisition of common stock on 2026-08-06.

Rhea-AI Filing Summary

FS Bancorp, Inc. President and CEO Matthew D. Mullet reported an acquisition of common stock on 2026-08-06. He obtained 207.996 shares of common stock at $43.27 per share in a transaction coded J, described as an other acquisition or disposition. According to a footnote, these shares were purchased under the issuer's Nonqualified 2022 Stock Purchase Plan and include a 25% matching component. Following this activity, reported indirect holdings include 10,853 shares held by an ESOP, 5,600 shares held by his spouse's IRA, and 22,124 shares held by his IRA.

Insider Trade Summary

Other: 207.996 shares

Other 5 txns

Insider Mullet Matthew D.

Role Pres & CEO of 1st Security Ban

Type	Security	Shares	Price	Value
Other	Common Stock F1	207.996	$43.27	$9K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 108,169.996 shares (Direct); Common Stock — 10,853 shares (Indirect, By ESOP); Common Stock — 5,600 shares (Indirect, By Spouse's IRA); Common Stock — 22,124 shares (Indirect, By IRA)

Footnotes (1)

1. F1. These shares were purchased under the Issuer's Nonqualified 2022 Stock Purchase Plan and includes a 25% match.

Key Figures

Shares acquired: 207.996 shares Price per share: $43.27 ESOP indirect holdings: 10,853 shares +3 more

6 metrics

Shares acquired 207.996 shares Common stock acquired on 2026-08-06 in transaction coded J

Price per share $43.27 Per-share value reported for the 2026-08-06 acquisition

ESOP indirect holdings 10,853 shares Indirect ownership reported as held by ESOP after transaction

Spouse's IRA holdings 5,600 shares Indirect ownership reported as held by spouse's IRA

IRA holdings 22,124 shares Indirect ownership reported as held by reporting person's IRA

Plan match rate 25% Match included under the Nonqualified 2022 Stock Purchase Plan

Key Terms

Nonqualified 2022 Stock Purchase Plan, ESOP, IRA, Form 4

4 terms

Nonqualified 2022 Stock Purchase Plan financial

"These shares were purchased under the Issuer's Nonqualified 2022 Stock Purchase Plan"

ESOP financial

"Indirect holdings include 10,853 shares held by an ESOP"

An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.

IRA financial

"Indirect holdings include shares held in an IRA and spouse's IRA"

An individual retirement account (IRA) is a savings account designed to help people put aside money for their retirement, often with tax advantages that encourage long-term savings. It matters to investors because it can grow over time, providing financial security later in life, and offers benefits that can reduce current taxes or allow investments to compound more effectively.

Form 4 regulatory

"Matthew D. Mullet reported the acquisition in a Form 4 filing"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did FS Bancorp (FSBW) CEO Matthew Mullet report?

Matthew D. Mullet reported acquiring 207.996 shares of FS Bancorp common stock on 2026-08-06 at $43.27 per share in a Form 4 transaction coded J, classified as an other type of acquisition or disposition.

How were the new FS Bancorp (FSBW) shares acquired by the CEO structured?

The 207.996 shares were purchased under FS Bancorp's Nonqualified 2022 Stock Purchase Plan and include a 25% match, meaning a portion of the reported shares reflects the issuer’s matching contribution under that plan.

What indirect FS Bancorp (FSBW) holdings does the CEO report after this Form 4?

Indirectly, Matthew D. Mullet reports 10,853 shares held by an ESOP, 5,600 shares held in his spouse's IRA, and 22,124 shares held in his own IRA, all in FS Bancorp common stock.

Was the FS Bancorp (FSBW) CEO’s 2026-08-06 transaction a market buy or a plan purchase?

The acquisition is linked to the issuer's Nonqualified 2022 Stock Purchase Plan, with a stated 25% match. The Form 4 does not describe it as an open-market purchase but as a plan-related transaction coded J.

What price was reported for the FS Bancorp (FSBW) CEO’s acquired shares?

The Form 4 reports a per-share value of $43.27 for the 207.996 shares of FS Bancorp common stock associated with the 2026-08-06 other acquisition transaction coded J.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/10/2026 - 03:12 PM Accepted by SEC EDGAR 08/10/2026 - 03:11 PM Learn about SEC filing dates

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, SUITE 300

(Street)

MOUNTLAKE TERRACE WASHINGTON 98043

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Pres & CEO of 1st Security Ban

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/06/2026

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	08/06/2026		J(1)		207.996	A	$43.27	1,829.996	D
Common Stock								106,340	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

Explanation of Responses:

1. These shares were purchased under the Issuer's Nonqualified 2022 Stock Purchase Plan and includes a 25% match.

	/s/ Matthew D. Mullet	08/10/2026
	** 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)