| Relationships | Role | Relationship Start | Relationship End |
| M&I Llc | Parent | 2/28/1988 | 12/31/1989 |
| Central Wisconsin Bankshares, Inc. | Parent | 6/30/1986 | 2/27/1988 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| M&I Bank Of Onalaska | Buyer | 47,049 | Discontinued | 1/1/1990 |