Exhibit 99.1 NEWS RELEASE CONTACT: MARK J. GRESCOVICH, PRESIDENT & CEO ROBERT G. BUTTERFIELD, CFO (509) 527-3636 Banner Corporation Reports Net Income of 39.8Million,or1.15 Per Diluted Share, for Second Quarter 2024; Declares Quarterly Cash Dividend of 0.48PerShareWallaWalla,WA−July17,2024−BannerCorporation(NASDAQGSM:BANR)("Banner"),theparentcompanyofBannerBank,todayreportednetincomeof39.8 million, or 1.15perdilutedshare,forthesecondquarterof2024,comparedto37 ...