| Relationships | Role | Relationship Start | Relationship End |
| Firstar Corporation Of Iowa | Parent | 12/31/1980 | 7/14/1989 |
| Firstar Corporation Of Iowa | Parent | 4/1/1976 | 12/30/1980 |
| Iowa National Investment Company | Parent | 12/31/1970 | 3/31/1976 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Dubuque Bank And Trust Company | Buyer | 1,448,796 | Discontinued | 7/15/1989 |