X0306 4 2020-02-18 0 0000946673 BANNER CORP BANR 0001655207 Larsen Kenneth A 10 SOUTH FIRST AVENUE WALLA WALLA WA 99362 0 1 0 0 Executive VP, Banner Bank Common Stock, $.01 par value per share 2020-02-18 4 A 0 557 53.84 A 8843 D Common Stock, $.01 par value per share 2020-02-18 4 F 0 167 53.84 D 8676 D This award for 1,146 performance shares was originally reported on April 3, 2017 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 18, 2020 used for administrative purposes. Includes direct ownership of 2,133 shares through Deferred Compensation Plan. Shares relinquished to cover tax obligations on vesting of 557 performance shares pursuant to 2014 Omnibus Incentive Plan. /s/Kenneth A. Larsen 2020-02-19