X0508 4 2026-03-04 0000946673 BANNER CORP BANR 0001817497 Rice Jill M 10 SOUTH FIRST AVE. WALLA WALLA WA 99362 1 Executive VP, Banner Bank 0 Common Stock, $0.01 par value per share 2026-03-04 4 A 0 1881 60.87 A 25471 D Common Stock, $0.01 par value per share 2026-03-04 4 F 0 830 60.87 D 24641 D Common Stock, $0.01 par value per share 336 I By 401(k) Plan This award for 2,613 performance shares was originally reported on April 3, 2023 at the maximum performance criteria. This supplements that filing to note the actual number of shares that vested based on the performance results as determined by Banner Corporation's Compensation Committee. Market price on March 4, 2026. Shares relinquished to cover tax obligations on vesting of 1,881 shares of restricted stock pursuant to 2018 Omnibus Incentive Plan. /s/ Richard C. Arnold, attorney-in-fact for Ms. Rice 2026-03-05