BamSEC and AlphaSense Join Forces
Learn More

Columbia Banking System Inc.

NASDAQ: COLB    
Share price (1/8/25): $27.16    
Market cap (1/8/25): $5.691 billion
Search in Documents
Key Exhibits
External Links

Plans of Reorganization, Merger, Acquisition or Similar Filter

EX-2.1
from 8-K 2 pages Amendment No. 1 to the Merger Agreement
12/34/56
EX-2.1
from 8-K 78 pages Agreement and Plan of Merger by and Among Umpqua Holdings Corporation, Columbia Banking System, Inc., and Cascade Merger Sub, Inc. Dated as of October 11, 2021
12/34/56
EX-2.1
from 8-K 85 pages Agreement and Plan of Merger by and Between Columbia Banking System, Inc. and Bank of Commerce Holdings Dated as of June 23, 2021
12/34/56
EX-2.1
from 425 90 pages Agreement and Plan of Merger by and Between Columbia Banking System, Inc. and Pacific Continental Corporation Dated as of January 9, 2017
12/34/56
EX-2.1
from 8-K 90 pages Agreement and Plan of Merger by and Between Columbia Banking System, Inc. and Pacific Continental Corporation Dated as of January 9, 2017
12/34/56
EX-2.1
from 425 85 pages Agreement and Plan of Merger by and Between Columbia Banking System, Inc. and Intermountain Community Bancorp Dated as of July 23, 2014
12/34/56
EX-2.1
from 8-K 85 pages Agreement and Plan of Merger by and Between Columbia Banking System, Inc. and Intermountain Community Bancorp Dated as of July 23, 2014
12/34/56
EX-2.1
from 425 72 pages Agreement and Plan of Merger by and Among Columbia Banking System, Inc. West Coast Bancorp and Sub (As Defined Herein) Dated as of September 25, 2012
12/34/56
EX-2.1
from 8-K 72 pages Agreement and Plan of Merger by and Among Columbia Banking System, Inc. West Coast Bancorp and Sub (As Defined Herein) Dated as of September 25, 2012
12/34/56
EX-2.1
from 8-K 48 pages Purchase and Assumption Agreement
12/34/56
EX-2.1
from 8-K 194 pages Purchase and Assumption Agreement
12/34/56
EX-2.1
from 8-K 203 pages Purchase and Assumption Agreement
12/34/56
EX-2.1
from 8-K 128 pages Purchase and Assumption Agreement Whole Bank All Deposits Among Federal Deposit Insurance Corporation, Receiver of Columbia River Bank, the Dalles, Oregon Federal Deposit Insurance Corporation and Columbia State Bank Dated as of January 22, 2010
12/34/56
EX-2.1
from 425 53 pages Plan and Agreement of Merger Among Columbia Banking System, Inc. Columbia State Bank and Mountain Bank Holding Company Mt. Rainier National Bank Dated as of March 28, 2007
12/34/56
EX-2.1
from 8-K 55 pages Plan and Agreement of Merger Among Columbia Banking System, Inc. Columbia State Bank and Town Center Bancorp Town Center Bank Dated as of March 28, 2007
12/34/56
EX-2.1
from 8-K 53 pages Plan and Agreement of Merger Among Columbia Banking System, Inc. Columbia State Bank and Mountain Bank Holding Company Mt. Rainier National Bank Dated as of March 28, 2007
12/34/56
EX-2.1
from 425 55 pages Plan and Agreement of Merger Among Columbia Banking System, Inc. Columbia State Bank and Town Center Bancorp Town Center Bank Dated as of March 28, 2007
12/34/56
EX-2.1
from DFAN14A 53 pages Plan and Agreement of Merger Among Columbia Banking System, Inc. Columbia State Bank and Mountain Bank Holding Company Mt. Rainier National Bank Dated as of March 28, 2007
12/34/56
EX-2
from 8-K 59 pages Plan and Agreement of Merger Between Bank of Astoria and New Bank of Astoria Upon Its Formation by Columbia Banking System, Inc. Dated as of June 7, 2004
12/34/56