Item 5.05Amendments to the Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics.
On July 22, 2025, the Board of Directors of Banner Corporation (the "Company") approved certain amendments to the Company's Code of Ethics and Business Conduct, as reflected in an amended version of the Code of Ethics and Business Conduct (the "Code"). The Code governs the conduct of all officers, directors, and employees of the Company and its subsidiaries.
The amended Code is effective September 16, 2025, and does not result in any waiver with respect to any officer, director or employee of the Company from any provision of the Code as in effect prior to the Board's action to amend the Code.
The Code was amended to, among other things, incorporate minor clarifications regarding the use of corporate resources for political purposes as well as expectations for ethical and professional behavior at work and when otherwise appearing to represent the Company.
The description of the amendments to the Code contained in this Current Report on Form 8-K is qualified in its entirety by reference to the full text of the Code, as amended, which is filed herewith as Exhibit 14.1.