Balance Sheet Highlights
Acquisitions & Mergers Role Assets Acct Method Type Transaction Date
Absarokee Bancorporation, Inc. Seller Discontinued 7/25/2015
Mountain West Financial Corp. Seller Discontinued 8/1/2014
Silver Run Bancorporation, Inc. Seller Discontinued 1/27/2003
Equality Bankshares, Inc. Seller Discontinued 9/15/2000
Security State Bank Shares Seller Discontinued 8/6/1999
Relationships Role Relationship Start Relationship End
Nbar5, Limited Partnership Parent 4/26/1996 9/3/1997
Js Investments, Limited Partnership Parent 6/26/1996 9/3/1997
Js Investments, Limited Partnership Parent 4/26/1996 6/25/1996
First Interstate Bank Subsidary 12/31/1989
Commerce Financial, Inc. Subsidary 6/30/2007
Mountain South, Llc Subsidary 8/1/2014
First Western Data, Inc. Subsidary 1/10/2008
Fi Statutory Trust I Subsidary 11/1/2007
Fi Capital Trust Ii Subsidary 10/31/2007
Fi Statutory Trust Iii Subsidary 12/14/2007
Fi Capital Trust Iv Subsidary 12/19/2007
Fi Statutory Trust V Subsidary 1/8/2008
Fi Statutory Trust Vi Subsidary 1/8/2008
Mwf Statutory Trust Iii Subsidary 8/1/2014 12/26/2014
Mwf Statutory Trust Iv Subsidary 8/1/2014 12/15/2014
Mountain West Bank, National Association Subsidary 8/1/2014 10/17/2014
Fibct, Llc Subsidary 3/8/2004 12/30/2013
First Interstate Insurance Agency, Inc. Subsidary 6/30/2007 12/30/2013
First Interstate Statutory Trust I Subsidary 6/30/2007 6/26/2012
Fi Reinsurance, Ltd Subsidary 6/30/2007 12/14/2009
First Western Bank Subsidary 1/10/2008 9/25/2009
The First Western Bank Sturgis Subsidary 1/10/2008 9/25/2009
I_Tech Corporation Subsidary 6/30/2007 12/31/2008
Fib, Llc Subsidary 5/3/2001 3/31/2008
Commerce Financial, Inc. Subsidary 6/1/1979 6/29/2007
I_Tech Corporation Subsidary 1/1/2000 6/29/2007
Fi Reinsurance, Ltd Subsidary 12/31/2001 6/29/2007
First Interstate Statutory Trust I Subsidary 3/26/2003 6/29/2007
First Interstate Insurance Agency, Inc. Subsidary 6/2/2004 6/29/2007
Crytech, Llc Subsidary 2/12/2001 12/1/2005
Fib Capital Trust Subsidary 10/1/1997 4/24/2003
Silver Run Bancorporation, Inc. Subsidary 1/1/2003 1/26/2003
First Interstate Bank Subsidary 7/1/1995 11/9/2001
The Equality State Bank Subsidary 9/15/2000 9/15/2000
Equality Bankshares, Inc. Subsidary 8/1/2000 9/14/2000
Security State Bank And Trust Company Subsidary 8/6/1999 8/31/1999
Security State Bank Shares Subsidary 7/9/1999 8/5/1999
First Interstate Bank, Fsb Subsidary 12/12/1996 12/22/1997
Mountain Bank Subsidary 12/18/1996 6/20/1997
First Interstate Bank Of Montana, National Association Subsidary 10/1/1996 6/20/1997
First Interstate Bank Of Wyoming, National Association Subsidary 10/1/1996 6/6/1997
United - Interstate Center Partnership Subsidary 8/13/1985 3/25/1996
The First National Park Bank In Livingston Subsidary 7/1/1995 9/22/1995
Commerce Bancshares Of Wyoming, Inc. Subsidary 10/1/1993 6/30/1995
First Park County Bancshares, Inc. Subsidary 5/19/1995 6/30/1995
Citizens Bancshares, Inc. Subsidary 5/5/1995 6/30/1995
Citizens Bancshares, Inc. Subsidary 1/3/1995 5/4/1995
First Interstate Bank Of Hardin Subsidary 12/31/1989 11/30/1992
First Interstate Bank Of Miles City Subsidary 12/31/1989 11/30/1992
First Interstate Bank Of West Billings Subsidary 12/31/1989 11/30/1992
First Interstate Bank Of Colstrip Subsidary 12/31/1989 11/30/1992
First Interstate Bank Of Billings Heights Subsidary 12/31/1989 11/30/1992
First Interstate Bank Of Missoula, National Association Subsidary 2/28/1986 11/30/1992
First Interstate Bank Of Hardin Subsidary 12/31/1977 12/30/1989
First Interstate Bank Of Miles City Subsidary 6/30/1981 12/30/1989
First Interstate Bank Of West Billings Subsidary 12/31/1980 12/30/1989
First Interstate Bank Of Colstrip Subsidary 12/31/1980 12/30/1989
First Interstate Bank Subsidary 12/31/1976 12/30/1989
First Interstate Bank Of Billings Heights Subsidary 1/4/1980 12/30/1989
First Interstate Bank Of West Billings Subsidary 3/26/1979 12/30/1980
First Interstate Bank Of Colstrip Subsidary 1/2/1976 12/30/1980
First Interstate Bank Of Hardin Subsidary 1/2/1976 12/30/1977
First Interstate Bank Subsidary 12/31/1973 12/30/1976
First Interstate Bank Subsidary 12/16/1971 12/30/1973
Financial Highlights First Interstate Bancsystem, Inc.
Total Assets 1,106