Columbia Banking System is the Tacoma-based parent of Umpqua Bank — a Western-US regional bank built by two big mergers (Umpqua Holdings in 2023, Pacific Premier Bancorp in 2025). It takes in ~$57B of deposits and lends most of it back out to businesses, homeowners and commercial-real-estate borrowers across eight states, earning the spread: ~89% of revenue is net interest income. After the Pacific Premier deal it runs ~$70B in assets and 350+ branches.
What Columbia Banking System, Inc. really sells
Columbia Banking System is the Tacoma-based parent of Umpqua Bank — a Western-US regional bank built by two big mergers (Umpqua Holdings in 2023, Pacific Premier Bancorp in 2025). It takes in ~$57B of deposits and lends most of it back out to businesses, homeowners and commercial-real-estate borrowers across eight states, earning the spread: ~89% of revenue is net interest income. After the Pacific Premier deal it runs ~$70B in assets and 350+ branches.