LAKE OSWEGO, Ore., May 2, 2024 /PRNewswire/ -- Umpqua Bank, a subsidiary of Columbia Banking System Inc. (Nasdaq: COLB), today announced it has been named to Global Finance's 31st annual World's Best Banks list. Umpqua was named the best U.S. regional bank in the Far West. New York-based Global Finance, a leading international corporate finance publication, each year ranks banks around the world based on a combination of factors including financial performance, balance sheet strength, breadth of products an ...