First Interstate Bancsystem, Inc.
Billings, MT — Financial Holding Company
Active
Acquisitions
| 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 |