FORM OF VOTING AGREEMENTVoting Agreement • January 10th, 2017 • Columbia Banking System Inc • State commercial banks • Washington
Contract Type FiledJanuary 10th, 2017 Company Industry JurisdictionThis Voting Agreement (the “Agreement”), dated as of January 9, 2017, is entered into by and among Coast, a Washington corporation (“Parent”), Pool, an Oregon corporation (the “Company”), and the member of the board of directors of Parent (the “Parent Board”) whose name appears on the signature page hereto (the “Director”).