| Relationships | Role | Relationship Start | Relationship End |
| Rock County Savings And Trust Company | Parent | 12/31/1981 | 10/31/1983 |
| Rock County Savings And Trust Company | Parent | 12/31/1976 | 12/30/1981 |
| Johnson Bank, National Association | Parent | 12/31/1976 | 12/30/1981 |
| Rock County Bancorp | Parent | 10/30/1974 | 12/30/1976 |