Columbia Banking System, Inc. Common Stock, also called Columbia Banking System, is a bank holding company, which engages in the provision of services. Read More Its activities include personal, business, and commercial banking and wealth management services. Its products and services include checking and savings accounts; debit and credit cards; digital banking; personal loans; home loans; foreign currency; professional banking; treasury management; merchant card services; international banking; financial services; private banking; and trust and investment services. The company was founded in 1988 and is headquartered in Tacoma, WA.