COLUMBIA BANKING SYSTEM, INC.

Columbia Banking System, Inc. is a bank holding company that provides a comprehensive range of financial services through its primary subsidiary, Umpqua Bank. It offers commercial banking, consumer banking, and wealth management solutions to small and medium-sized businesses, professionals, and individuals across eight western states, including Oregon, Washington, California, Idaho, Nevada, Arizona, Colorado, and Utah. The company delivers deposit products such as checking and savings accounts, money market accounts, certificates of deposit, and insured cash sweep solutions. Its lending portfolio includes commercial lines of credit, term loans, accounts receivable financing, inventory financing, and residential mortgages. Wealth management services are provided through Columbia Wealth Advisors and Columbia Trust Company, encompassing financial planning, investments, estate planning, agency, and fiduciary services. Columbia Banking System, Inc. emphasizes relationship banking via traditional branches and digital channels, with a focus on diversification across loan types, customer segments, and geographic regions to support its operations in the regional banking sector. Founded in 1993 and headquartered in Tacoma, Washington, it plays a key role in serving the financial needs of its western U.S. footprint.