X0609 4 2026-09-23 0 0001046050 TIMBERLAND BANCORP INC TSBK 0002104858 Seath Matthew Douglas false 624 SIMPSON AVENUE HOQUIAM WA 98550 0 1 0 0 Chief Risk Officer/EVP 0 Common Stock, $.01 par value 2026-09-23 4 F 0 75 44.82 D 3080 D Common Stock, $.01 par value 2026-09-24 4 F 0 60 45.1 D 3020 D As previously reported 250 shares of restricted stock vested on September 23. 2026, of which 75 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 200 shares of restricted stock vested on September 24, 2026, of which 60 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. /s/Cheryl Parks, Power of Attorney for Matthew D. Seath 2026-09-23