Columbia Banking System, Inc. is a regional bank holding company headquartered in Lake Oswego, Oregon. Following its merger of equals with Umpqua Holdings Corporation, which completed in March 2023, the combined company operates under the Umpqua Bank brand and charter. The bank provides a comprehensive suite of banking, wealth management, and other financial services to corporate, institutional, and individual customers. With a history rooted in community banking, its mission is to offer personalized service and financial expertise, leveraging its expanded scale to serve a broader customer base across the West.

Founded in

United States