X0306 4 2019-02-25 0 0000946673 BANNER CORP BANR 0001231641 GRESCOVICH MARK J 10 SOUTH FIRST AVE. WALLA WALLA WA 99362 0 1 0 0 President and CEO Common Stock, $.01 par value per share 2019-02-25 4 A 0 4254 61.288 A 116928 D Common Stock, $.01 par value per share 2019-02-25 4 F 0 1030 61.288 D 115898 D This award for 12,761 performance shares was originally reported on April 5, 2016 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 19, 2019 used for administrative purposes. Shares relinquished to cover tax obligations on vesting of 4,254 performance shares pursuant to 2014 Omnibus Incentive Plan. /s/Mark J. Grescovich 2019-02-25