| 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 | 12/31/1978 | 3/31/1992 |
| Unibank Inc | Parent | 12/31/1970 | 12/30/1978 |
| Boatmen's Insurance Services Of Iowa, Inc. | Subsidary | 5/27/1983 | 8/15/1997 |
| 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 |
| Clear Lake Office | Seller | Discontinued | 5/1/1992 | ||
| First Interstate Bank Of Algona | Seller | 52,158 | Discontinued | 7/1/1991 | |
| First Interstate Bank Of Cresco, National Association | Seller | 37,194 | Discontinued | 7/1/1991 |