| Relationships | Role | Relationship Start | Relationship End |
| Banc One Wisconsin Corporation | Parent | 3/28/1990 | 12/7/1996 |
| Marisub, Inc. | Parent | 4/5/1986 | 3/27/1990 |
| Commercial Banc-Corp. | Parent | 12/31/1979 | 4/4/1986 |
| Commercial Banc-Corp. | Parent | 12/31/1974 | 12/30/1979 |
| Commercial Banc-Corp. | Parent | 12/31/1973 | 12/30/1974 |
| Commercial Banc-Corp. | Parent | 12/31/1970 | 12/30/1973 |
| Monroe Investment Holding Company | Subsidary | 12/1/1989 | 12/7/1996 |
| Commercial And Savings Building Corporation | Subsidary | 12/31/1976 | 12/31/1977 |
| 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 |