EX-21.1 4 c83081exv21w1.htm SUBSIDIARIES exv21w1
 

Exhibit 21.1

Subsidiaries of First Interstate BancSystem, Inc.

         
    State of Incorporation or    
Subsidiary   Jurisdiction of Organization   Business Name
 
 
First Interstate Bank   Montana   First Interstate Bank
         
Commerce Financial, Inc.   Montana   Commerce Financial, Inc.
         
First Interstate Statutory Trust   Delaware   First Interstate Statutory Trust
         
i_Tech Corporation   Montana   i_Tech Corporation
         
FIB, LLC   Montana   FIB, LLC
         
FI Reinsurance, Ltd.   Nevis Island, West Indies   FI Reinsurance, Ltd.