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Columbia Banking System and Umpqua Holdings Corporation Announce Receipt of Shareholder Approvals to Combine

TACOMA, Wash. and PORTLAND, Ore., Jan. 26, 2022 /PRNewswire/ -- Columbia Banking System, Inc. ("Columbia") (NASDAQ:COLB), the parent company of Columbia State Bank, and Umpqua Holdings Corporation ("Umpqua") (NASDAQ:UMPQ), the parent company of Umpqua