| Relationships | Role | Relationship Start | Relationship End |
| Marvell Implement Company | Parent | 6/30/1989 | 3/14/1991 |
| Marvell Implement Company | Parent | 12/31/1979 | 6/29/1989 |
| Marvell Implement Company | Parent | 12/31/1974 | 12/30/1979 |
| Marvell Implement Company | Parent | 12/31/1970 | 12/30/1974 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Helena National Bank | Buyer | 179,452 | Discontinued | 3/15/1991 |