EX-21.1 2 fibk-20111231xex211.htm FIBK-2011.12.31-EX21.1


Exhibit 21.1
Subsidiaries of First Interstate BancSystem, Inc.
Subsidiary
 
State of Incorporation or Jurisdiction of Organization
 
Business Name
First Interstate Bank
 
Montana
 
First Interstate Bank
First Western Data, Inc.
 
South Dakota
 
First Western Data, Inc.
First Interstate Statutory Trust
 
Delaware
 
First Interstate Statutory Trust
FI Statutory Trust I
 
Connecticut
 
FI Statutory Trust I
FI Capital Trust II
 
Delaware
 
FI Capital Trust II
FI Statutory Trust III
 
Delaware
 
FI Statutory Trust III
FI Capital Trust IV
 
Delaware
 
FI Capital Trust IV
FI Statutory Trust V
 
Delaware
 
FI Statutory Trust V
FI Statutory Trust VI
 
Delaware
 
FI Statutory Trust VI
Commerce Financial, Inc.
 
Montana
 
Commerce Financial, Inc.
First Interstate Insurance Agency, Inc.
 
Montana
 
First Interstate Insurance Agency, Inc.
FIBCT, LLC
 
Montana
 
Crytech
FIB, LLC
 
Montana
 
FIB, LLC