X0306 4 2023-03-07 0000946673 BANNER CORP BANR 0001568808 Reed James T Jr 10 SOUTH FIRST AVENUE WALLA WALLA WA 99362 1 Executive VP, Banner Bank Common Stock, $0.01 par value per share 2023-03-07 4 A 0 2773 62.01 A 24071 D Common Stock, $0.01 par value per share 2023-03-07 4 F 0 759 62.01 D 23312 D This award for 3,301 performance shares was originally reported on March 27, 2020 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 7, 2023. Includes direct ownership of 825 shares through IRA. Shares relinquished to cover tax obligations on vesting of 2,733 performance shares pursuant to 2018 Omnibus Incentive Plan. /s/ James T. Reed Jr. 2023-03-09