X0609 4 2026-09-28 0 0001046050 TIMBERLAND BANCORP INC TSBK 0001251575 BASICH MARCI A false 624 SIMPSON AVENUE HOQUIAM WA 98550 0 1 0 0 Chief Financial Officer 0 Common Stock, $.01 par value 2026-09-28 4 F 0 100 45.41 D 4465 D Common Stock, $.01 par value 2026-09-29 4 A 0 1900 0 A 6365 D Common Stock, $.01 par value 12384 I By KSOP As previously reported 300 shares of restricted stock vested on September 26, 2026, of which 100 shares were withheld at the election of the Reporting Person for Issuer to pay the value of the vested shares to state and federal tax authorities for the Reporting Person's account. Restricted Stock Award was granted on 9/29/2026. These shares will vest equally over 5 years. Represents shares held in the Timberland Bank Employee Stock Ownership and 401(k) Plan ("KSOP"). /s/Cheryl Parks, Power of Attorney for Marci A. Basich 2026-09-30