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SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported): July 22, 2025
Timberland Bancorp, Inc.
(Exact name of registrant as specified in its charter)

Washington | 000-23333 | 91-1863696
State or other jurisdiction | Commission | (I.R.S. Employer
Of incorporation | File Number | Identification No.)

624 Simpson Avenue, Hoquiam, Washington | 98550
(Address of principal executive offices) | (Zip Code)

Registrant’s telephone number (including area code) (360) 533-4747

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions.
☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class |  | Trading Symbol(s) |  | Name of each exchange on which registered
TSBK |  | TSBK |  | The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [ ]

Item 2.02 Results of Operations and Financial Condition
On July 22, 2025, Timberland Bancorp, Inc. (the “Company”) issued its earnings release for the quarter ended June 30, 2025. The release also announced the declaration of a quarterly cash dividend of $0.26 per common share. A copy of the earnings release is attached hereto as Exhibit 99.1, which is incorporated herein by reference.
Item 7.01 Regulation FD Disclosure
Timberland Bancorp is filing a third quarter investor presentation that is available for distribution to investors.
A copy of the presentation materials is attached hereto as Exhibit 99.2 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished pursuant to this item and the related exhibit is being “furnished” and will not except to the extent required by applicable law or regulation, be deemed “filed” by Timberland Bancorp for purpose of Section 18 of the Exchange Act, or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as may be expressly set forth by specific reference in such filings.
Item 9.01 Financial Statements and Exhibits
(d) Exhibits
99.1 Earnings Release of Timberland Bancorp, Inc. dated July 22, 2025
99.2 Third Quarter 2025 Investor Presentation
104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

| TIMBERLAND BANCORP, INC.
DATE: July 22, 2025 | By: /s/Marci A. Basich
| Marci A. Basich
| Chief Financial Officer