X0306 4 2017-06-19 0 0000946673 BANNER CORP BANR 0001187854 SIRMON GARY 10 SOUTH FIRST AVE WALLA WALLA WA 99362 1 0 0 0 Common Stock, $.01 par value per share 2017-06-19 4 S 0 3333 56.77 D 30671 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 17, 2017. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.6102 to $56.88 per share, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2). Includes direct ownership of 2,643 shares through an IRA. /s/Gary Sirmon 2017-06-19