# EDGAR Filing Document

**Accession Number:** 0001972440
**File Stem:** 0000939057-25-000216
**Filing Date:** 2025-8
**Character Count:** 6954
**Document Hash:** 0a269392512114894ac80b3440acb9d0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000939057-25-000216.hdr.sgml**: 20250819

**ACCESSION NUMBER**: 0000939057-25-000216

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250818

**FILED AS OF DATE**: 20250819

**DATE AS OF CHANGE**: 20250819

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Antich Breanne D
- **CENTRAL INDEX KEY:** 0001972440

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-23333
- **FILM NUMBER:** 251230010

**MAIL ADDRESS:**
- **STREET 1:** 624 SIMPSON AVENUE
- **CITY:** HOQUIAM
- **STATE:** WA
- **ZIP:** 98550
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TIMBERLAND BANCORP INC
- **CENTRAL INDEX KEY:** 0001046050
- **STANDARD INDUSTRIAL CLASSIFICATION:** SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED [6036]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 911863696
- **STATE OF INCORPORATION:** WA
- **FISCAL YEAR END:** 0930

**BUSINESS ADDRESS:**
- **STREET 1:** 624 SIMPSON AVE
- **CITY:** HOQUIAM
- **STATE:** WA
- **ZIP:** 98550
- **BUSINESS PHONE:** 3605334747

**MAIL ADDRESS:**
- **STREET 1:** 624 SIMPSON AVE
- **CITY:** HOQUIAM
- **STATE:** WA
- **ZIP:** 98550

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Antich Breanne D<br><sub>(Last) (First) (Middle)</sub><br>624 SIMPSON AVENUE<br><sub>(Street)</sub><br>HOQUIAM, WA 98550<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-08-18 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Technology Officer/EVP_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>TIMBERLAND BANCORP INC [ TSBK ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock, $.01 par value per share<sup>(1)</sup> | 2025-08-18 |  | M |  | 2000 | A | $29.69 | 4348 | D |  |
| Common Stock, $.01 par value per share<sup>(1)</sup> | 2025-08-18 |  | M |  | 1600 | A | $31.8 | 5948 | D |  |
| Common Stock, $.01 par value per share<sup>(1)</sup> | 2025-08-18 |  | M |  | 1400 | A | $27.14 | 7348 | D |  |
| Common Stock, $.01 par value per share<sup>(1)</sup> | 2025-08-18 |  | M |  | 1200 | A | $28.23 | 8548 | D |  |
| Common Stock, $.01 par value per share<sup>(1)</sup> | 2025-08-18 |  | M |  | 800 | A | $27.4 | 9348 | D |  |
| Common Stock, $.01 par value per share<sup>(1)</sup> | 2025-08-18 |  | S |  | 7000 | D | $32.55 | 2348 | D |  |
| Common Stock, $.01 par value per share |  |  |  |  |  |  |  | 4174 | I | By KSOP<sup>(1)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Stock Options (Right to Buy) | $29.69 | 2025-08-18 |  | M |  |  | 2000 | 2022-09-23 | 2027-09-23 | Common Stock | 2000 | $0 | 8700 | D |  |
| Stock Options (Right to buy) | $31.8 | 2025-08-18 |  | M |  |  | 1600 | 2023-09-25 | 2028-09-25 | Common Stock | 1600 | $0 | 7100 | D |  |
| Stock Options (Right to Buy) | $27.14 | 2025-08-18 |  | M |  |  | 1400 | 2024-09-24 | 2029-09-24 | Common Stock | 1400 | $0 | 5700 | D |  |
| Stock Options (Right to Buy) | $28.23 | 2025-08-18 |  | M |  |  | 1200 | 2026-09-28 | 2031-09-28 | Common Stock | 1200 | $0 | 4500 | D |  |
| Stock Options (Right to Buy) | $27.4 | 2025-08-18 |  | M |  |  | 800 | 2027-09-27 | 2032-09-27 | Common Stock | 800 | $0 | 3700 | D |  |

---

### Footnotes:

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

**Signature:** /s/Cheryl Parks, Power of Attorney for Breanne D. Antich  
**Date:** 2025-08-19

### Remarks:

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.**