# EDGAR Filing Document

**Accession Number:** 0001251575
**File Stem:** 0000939057-26-000034
**Filing Date:** 2026-2
**Character Count:** 6794
**Document Hash:** 90a11388cf4453e6c66b2470b02e88c8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000939057-26-000034.hdr.sgml**: 20260204

**ACCESSION NUMBER**: 0000939057-26-000034

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260202

**FILED AS OF DATE**: 20260204

**DATE AS OF CHANGE**: 20260204

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** BASICH MARCI A
- **CENTRAL INDEX KEY:** 0001251575

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-23333
- **FILM NUMBER:** 26598503

**MAIL ADDRESS:**
- **STREET 1:** 409 FIR STREET
- **CITY:** MCLEARY
- **STATE:** WA
- **ZIP:** 98557
**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>BASICH MARCI A<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>2026-02-02 | **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 Financial 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 | 2026-02-02 |  | M |  | 2000 | A | $29.69 | 6800 | D |  |
| Common Stock, $.01 par value per share | 2026-02-02 |  | M |  | 1600 | A | $31.8 | 8400 | D |  |
| Common Stock, $.01 par value per share | 2026-02-02 |  | M |  | 747 | A | $28.23 | 9147 | D |  |
| Common Stock, $.01 par value per share | 2026-02-02 |  | S |  | 4347 | D | $39.52 | 4800 | D |  |
| Common Stock, $.01 par value per share | 2026-02-03 |  | M |  | 376 | A | $28.23 | 5176 | D |  |
| Common Stock, $.01 par value per share | 2026-02-03 |  | S |  | 376 | D | $39.5 | 4800 | D |  |
| Common Stock, $.01 par value per share |  |  |  |  |  |  |  | 12384 | 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 | 2026-02-02 |  | M |  |  | 2000 | 2022-09-23 | 2027-09-23 | Common Stock | 2000 | $0 | 6000 | D |  |
| Stock Options (Right to Buy) | $31.8 | 2026-02-02 |  | M |  |  | 1600 | 2023-09-25 | 2028-09-25 | Common Stock | 1600 | $0 | 4400 | D |  |
| Stock Options (Right to Buy) | $28.23 | 2026-02-02 |  | M |  |  | 747 | 2026-09-28<sup>(2)</sup> | 2031-09-28 | Common Stock | 747 | $0 | 3653 | D |  |
| Stock Options (Right to Buy) | $28.23 | 2026-02-03 |  | M |  |  | 376 | 2026-09-28<sup>(2)</sup> | 2031-09-28 | Common Stock | 376 | $0 | 3277 | D |  |

---

### Footnotes:

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

(2) Represents date options will be fully vested.

**Signature:** /s/Cheryl Parks, Power of Attorney for Marci A. Basich  
**Date:** 2026-02-04

### 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.**