| Relationships | Role | Relationship Start | Relationship End |
| Johnson Financial Group, Inc. | Parent | 12/31/1990 | 10/23/1998 |
| Johnson Heritage Bancorp, Ltd. | Parent | 4/1/1989 | 12/30/1990 |
| Rock County Bancorp | Parent | 10/30/1974 | 3/31/1989 |
| Jackman Management | Parent | 12/31/1970 | 10/29/1974 |
| Johnson Investments Janesville, Inc. | Subsidary | 7/25/1990 | 10/23/1998 |
| Main Street Realty Company Inc | Subsidary | 12/31/1976 | 12/30/1981 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Johnson Bank | Buyer | 4,542,254 | Pooling of Interests | Discontinued | 10/24/1998 |
| Rock County Savings And Trust Company | Seller | 49,701 | Discontinued | 10/28/1989 |