| Relationships | Role | Relationship Start | Relationship End |
| Montana Bancsystem, Inc. | Parent | 3/26/1991 | 3/31/1991 |
| Bozeman Bancorporation, Inc. | Parent | 12/31/1973 | 3/25/1991 |
| Bozeman Bancorporation, Inc. | Parent | 12/31/1970 | 12/30/1973 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Montana Bank, National Association | Buyer | 261,675 | Discontinued | 4/1/1991 |