X0508 4 2025-09-26 0 0001046050 TIMBERLAND BANCORP INC TSBK 0001972440 Antich Breanne D 624 SIMPSON AVENUE HOQUIAM WA 98550 0 1 0 0 Chief Technology Officer/EVP 0 Common Stock, $.01 par value per share 2025-09-26 4 F 0 64 34.2 D 4189 D Common Stock, $.01 par value per share 4174 I By KSOP As previously reported 200 shares of restricted stock vested on September 26, 2025 of which 64 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. Represents shares held in the Timberland Bank Employee Stock Ownership and 401(k) Plan ("KSOP") /s/Cheryl Parks, Power of Attorney for Breanne D. Antich 2025-09-29