| Relationships | Role | Relationship Start | Relationship End |
| Firstar Corporation Of Iowa | Parent | 6/30/1987 | 12/31/1990 |
| Cts Bancorporation | Parent | 12/31/1983 | 6/29/1987 |
| Cts Bancorporation | Parent | 9/24/1981 | 12/30/1983 |
| Eldridge Realty Co | Subsidary | 2/13/1981 | 6/30/1987 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Firstar Bank Quad Cities, National Association | Buyer | 289,631 | Discontinued | 1/1/1991 |