X0306 4 2021-02-26 0000946673 BANNER CORP BANR 0001702210 McLean James P.G. 10 SOUTH FIRST AVENUE WALLA WALLA WA 99362 1 Executive VP, Banner Bank Common Stock, $0.01 par value per share 2021-02-26 4 A 0 1185 52.22 A 15540 D Common Stock, $0.01 par value per share 2021-02-26 4 F 0 356 52.22 D 15184 D This award for 1,815 performance shares was originally reported on April 2, 2018 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 February 26, 2021 used for administrative purposes. Shares relinquished to cover tax obligations on vesting of 1,185 shares of restricted stock pursuant to the 2014 Omnibus Incentive Plan. /s/ James P.G. McLean 2021-03-02