| Relationships | Role | Relationship Start | Relationship End |
| First Interstate Bancsystem, Inc. | Parent | 12/31/1989 | 11/30/1992 |
| First Interstate Bancsystem, Inc. | Parent | 6/30/1981 | 12/30/1989 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| First Interstate Bank | Buyer | 8,944,669 | Discontinued | 12/1/1992 |