| Relationships | Role | Relationship Start | Relationship End |
| First Interstate Of Iowa, Inc. | Parent | 12/31/1984 | 12/14/1990 |
| First Interstate Of Iowa, Inc. | Parent | 9/6/1980 | 12/30/1984 |
| Spencer Financial Corporation | Parent | 12/31/1978 | 9/5/1980 |
| Spencer Financial Corporation | Parent | 4/12/1977 | 12/30/1978 |
| Spencer National Bank Trust | Parent | 12/31/1970 | 4/11/1977 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Boatmen's National Bank Of Northwest Iowa | Buyer | 121,713 | Discontinued | 12/15/1990 | |
| 1St Federal Savings And Loan Association Of Estherville And Emmetsburg | Seller | 44,408 | Failure | 6/16/1990 |