| Relationships | Role | Relationship Start | Relationship End |
| Firstar Bank Council Bluffs | Parent | 12/31/1976 | 8/10/1981 |
| Firstar Corporation Of Iowa | Parent | 2/11/1972 | 12/30/1976 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Firstar Bank Council Bluffs | Buyer | 296,966 | Discontinued | 8/11/1981 |