| Relationships | Role | Relationship Start | Relationship End |
| First Chicago Nbd Corporation | Parent | 3/1/1990 | 10/31/1990 |
| Union Bancorp Inc. | Parent | 7/1/1986 | 2/28/1990 |
| Union Bancorp Inc. | Parent | 10/1/1982 | 6/30/1986 |
| Union Bancorp, Inc. | Parent | 9/16/1974 | 9/30/1982 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank One, Michigan | Buyer | 20,267,024 | Discontinued | 11/1/1990 | |
| Spring Lake State Bank | Seller | Discontinued | 7/2/1962 |