Timberland Bancorp (TSBK) CTO exercises options and sells 800 shares

Rhea-AI Filing Summary

Timberland Bancorp’s Chief Technology Officer/EVP, Breanne D. Antich, reported option exercises and a share sale. On February 6, 2026 she exercised two stock option grants for 400 shares each of common stock at exercise prices of $28.23 and $27.40.

On the same date she sold 800 shares of common stock at $40.05 per share. After these transactions, she directly owns 4,189 shares of Timberland Bancorp common stock and holds an additional 4,174 shares indirectly through the Timberland Bank Employee Stock Ownership and 401(k) Plan (KSOP). Her remaining stock options cover 3,300 and 2,900 shares, with future vesting dates noted.

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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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^*

Antich Breanne D

(Last) (First) (Middle)

624 SIMPSON AVENUE

(Street)

HOQUIAM WA 98550

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TIMBERLAND BANCORP INC [ TSBK ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer/EVP

3. Date of Earliest Transaction (Month/Day/Year)
02/06/2026

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, $.01 par value per share	02/06/2026		M		400	A	$28.23	4,589	D
Common Stock, $.01 par value per share	02/06/2026		M		400	A	$27.4	4,989	D
Common Stock, $.01 par value per share	02/06/2026		S		800	D	$40.05	4,189	D
Common Stock, $.01 par value per share								4,174	I	By KSOP(1)

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)	$28.23	02/06/2026		M			400	09/28/2026(2)	09/28/2031	Common Stock	400	$0	3,300	D
Stock Options (Right to Buy)	$27.4	02/06/2026		M			400	09/27/2027(2)	09/27/2032	Common Stock	400	$0	2,900	D

Explanation of Responses:

1. Represents shares held in the Timberland Bank Employee Stock Ownership and 401(k) Plan ("KSOP").

2. Represents date options will be fully vested.

	/s/Cheryl Parks, Power of Attorney for Breanne D. Antich	02/09/2026
	** 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.

FAQ

What insider transactions did TSBK executive Breanne D. Antich report on February 6, 2026?

Breanne D. Antich reported exercising two stock option grants for 400 shares each and selling 800 shares of Timberland Bancorp common stock. All transactions occurred on February 6, 2026, and involved both option exercises and an open-market sale.

How many Timberland Bancorp (TSBK) shares does Breanne D. Antich own after these Form 4 transactions?

After the reported transactions, Breanne D. Antich directly owns 4,189 shares of Timberland Bancorp common stock. She also has 4,174 shares held indirectly through the company’s employee stock ownership and 401(k) plan, referred to in the filing as the KSOP.

What stock options did TSBK’s CTO exercise and retain in the February 2026 Form 4?

She exercised two stock option grants covering 400 underlying shares each, at exercise prices of $28.23 and $27.40. Following these exercises, she still holds stock options on 3,300 shares from one grant and 2,900 shares from another, with future vesting dates specified.

At what price did Breanne D. Antich sell Timberland Bancorp (TSBK) shares in this filing?

Breanne D. Antich sold 800 shares of Timberland Bancorp common stock at a price of $40.05 per share. The sale occurred on February 6, 2026, following the exercise of two separate stock option grants reported in the same filing.

How are KSOP shares treated in Breanne D. Antich’s Timberland Bancorp Form 4?

The filing shows 4,174 Timberland Bancorp shares held indirectly through the Timberland Bank Employee Stock Ownership and 401(k) Plan, called the KSOP. These KSOP shares are reported as indirect beneficial ownership, separate from her directly held common stock position.

What role does Breanne D. Antich hold at Timberland Bancorp (TSBK) in this Form 4?

The Form 4 identifies Breanne D. Antich as an officer of Timberland Bancorp, serving as Chief Technology Officer and Executive Vice President. Her status as an executive officer triggers the requirement to report these equity transactions under Section 16 rules.