Banner Corporation amends Code of Ethics and Business Conduct effective September 16, 2025

BANNER CORP

Board approved amendments on July 22, 2025; effective date September 16, 2025.
Amendments add minor clarifications on use of corporate resources for political purposes.
Amendments also address expectations for ethical behavior when representing the Company.
No waivers were granted to any officer, director, or employee under the amended Code.

item 5.05item 9.01

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