October 11, 2021 Mr. Cort O’Haver At the address on file with the Company Dear Cort:Letter Agreement • March 1st, 2023 • Columbia Banking System, Inc. • State commercial banks
This letter (this “Letter Agreement”) memorializes our agreement regarding the terms of your employment with, and service to, Columbia Banking System, Inc. (the “Company”) following the completion of the Merger contemplated by the Agreement and Plan of Merger, by and among Umpqua Holdings Corporation (“Umpqua”), the Company and Cascade Merger Sub, Inc., dated as of October 11, 2021 (the “Merger Agreement”). Capitalized terms used but not defined in this Letter Agreement have the meanings ascribed to them in the Merger Agreement.
