| Relationships | Role | Relationship Start | Relationship End |
| Boatmen's Bancshares Of Iowa, Inc. | Parent | 4/1/1992 | 8/15/1997 |
| First Interstate Of Iowa, Inc. | Parent | 2/27/1978 | 3/31/1992 |
| Associated Bank Corporation | Parent | 1/5/1972 | 2/26/1978 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank Of America, National Association | Buyer | 322,913,000 | Pooling of Interests | Discontinued | 8/16/1997 |
| First Interstate Bank Of Spencer, National Association | Seller | 72,361 | Discontinued | 12/15/1990 |