Balance Sheet Highlights
Acquisitions & Mergers Role Assets Acct Method Type Transaction Date
Intermountain Community Bancorp Seller Discontinued 11/1/2014
West Coast Bancorp Seller Discontinued 4/1/2013
Mountain Bank Holding Company Seller Discontinued 7/23/2007
Town Center Bancorp Seller Discontinued 7/23/2007
Cascade Bancorp, Inc. Seller Discontinued 12/2/1997
Columbia National Bankshares, Inc. Seller Discontinued 8/16/1993
Relationships Role Relationship Start Relationship End
Columbia State Bank Subsidary 8/16/1993
Columbia Trust Company Subsidary 4/1/2013
Intermountain Statutory Trust Ii Subsidary 11/1/2014 1/7/2015
Intermountain Statutory Trust I Subsidary 11/1/2014 12/26/2014
West Coast Statutory Trust Iii Subsidary 4/1/2013 6/17/2013
West Coast Statutory Trust Iv Subsidary 4/1/2013 6/17/2013
West Coast Statutory Trust V Subsidary 4/1/2013 6/17/2013
West Coast Statutory Trust Vi Subsidary 4/1/2013 6/17/2013
West Coast Statutory Trust Vii Subsidary 4/1/2013 6/17/2013
West Coast Statutory Trust Viii Subsidary 4/1/2013 6/17/2013
Columbia (Wa) Statutory Trust I Subsidary 6/30/2007 7/29/2011
Town Center Bancorp Trust I Subsidary 7/23/2007 7/7/2011
Bank Of Astoria Subsidary 10/1/2004 3/31/2008
Columbia (Wa) Statutory Trust I Subsidary 7/31/2001 6/29/2007
Columbia Savings Bank, A Federal Savings Bank Subsidary 8/16/1993 3/11/1994
Financial Highlights Columbia Banking System, Inc.
Total Assets 1,251