X0609 4/A 2026-09-23 2026-09-25 0 0001046050 TIMBERLAND BANCORP INC TSBK 0001861355 Bhandari Parul false 624 SIMPSON AVENUE HOQUIAM WA 98550 1 0 0 0 0 Common Stock, $.01 par value 2026-09-23 4 F 0 51 44.82 D 1894 D Common Stock, $.01 par value 2026-09-24 4 F 0 58 45.1 D 1836 D As previously reported 233 shares of restricted stock vested on September 23. 2026, of which 51 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. As previously reported 215 shares of restricted stock vested on September 24. 2026, of which 58 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. This Form 4/A is being filed to correct an inadvertent administrative error on the Form 4 filed on September 25, 2026. This amendment corrects the year in the "Date of Earliest Transaction" and "Transaction Date" which was incorrectly entered as 2025 and is now revised to 2026. The rest of the Form 4 is unchanged. /s/Cheryl Parks, Power of Attorney for Parul Bhandari 2026-09-28