1st Security Bank of Washington, a provider of banking services, completed the acquisition of seven branches in Washington and Oregon from Columbia Banking System, a commercial banking institution. Financial terms were not disclosed. "We are excited about the proposed acquisition of these branches and the expansion of our franchise into the Oregon market. As experienced acquirors, we are committed to providing our new customers and employees with the best possible transition from Columbia and look forward to offering our personalized banking services to these communities for years to come," Joe Adams, 1st Security CEO.