| Relationships | Role | Relationship Start | Relationship End |
| Banc One Wisconsin Corporation | Parent | 3/28/1990 | 12/7/1996 |
| Marisub Of Wisconsin, Inc. | Parent | 9/23/1985 | 3/27/1990 |
| Firstar Corporation | Parent | 12/31/1979 | 9/22/1985 |
| Firstar Corporation | Parent | 1/6/1978 | 12/30/1979 |
| Fond Du Lac Investment Holding Company | Subsidary | 12/1/1989 | 12/7/1996 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank One, Milwaukee, National Association | Buyer | 5,354,275 | Pooling of Interests | Discontinued | 12/8/1996 |
| Community Savings And Loan Association | Seller | 141,431 | Failure | 2/10/1990 | |
| Eden State Bank | Seller | Failure | 3/21/1939 |