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): December 11, 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
Common Stock, par value $.01 per share		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 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

(b) Timberland Bancorp, Inc. (the “Company”) and its financial institution subsidiary, Timberland Bank (“Bank”), announced that Todd Van Cise and the Company mutually agreed to cancel Mr. Van Cise’s employment agreement, effective December 11, 2025, to allow Mr. Van Cise to pursue other career opportunities.  Mr. Van Cise had been with the Company since 2012 and had served as the Chief Credit Officer since January 1, 2024.  Neither party cited any disagreements in the separation agreement and the Company wishes Mr. Van Cise well in his future endeavors.

(c) As a result of Mr. Van Cise leaving the Company, Kevin Sakamoto, age 57, was appointed as the Chief Credit Officer of the Company, effective December 11, 2025.  Mr. Sakamoto has been affiliated with the Company since 2023, serving as the Vice President of Credit Administration and Special Assets.  Mr. Sakamoto has over 30 years of commercial banking experience, having worked at several financial institutions, including serving as the Chief Credit Officer of Bank Reale.  Mr. Sakamoto is a graduate of the University of Washington and Pacific Coast Banking School.

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:  December 11, 2025	By:  /s/ Dean J. Brydon
	Dean J. Brydon        Chief Executive Officer