| Relationships | Role | Relationship Start | Relationship End |
| Rock Rivers Bancorp | Parent | 9/9/1991 | 12/31/1998 |
| Rock Rivers Bancorp | Parent | 11/30/1990 | 9/8/1991 |
| Asco, Inc. | Parent | 12/31/1970 | 1/21/1987 |
| Midwest Agricultural Credit Corporation | Subsidary | 12/31/1976 | 3/7/1981 |
| Midwest Agricultural Credit Corporation | Subsidary | 12/31/1975 | 12/30/1976 |
| Midwest Agricultural Credit Corporation | Subsidary | 1/21/1972 | 12/30/1975 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Frontier Bank | Buyer | 200,788 | Discontinued | 1/1/1999 |