| Relationships | Role | Relationship Start | Relationship End |
| First Chicago Nbd Corporation | Parent | 1/1/1984 | 5/31/1990 |
| National Ann Arbor Corporation | Parent | 12/31/1976 | 12/31/1983 |
| National Ann Arbor Corporation | Parent | 2/28/1974 | 12/30/1976 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank One, Michigan | Buyer | 20,267,024 | Discontinued | 6/1/1990 | |
| Milan State Bank | Seller | Discontinued | 12/4/1961 |