| Relationships | Role | Relationship Start | Relationship End |
| Michigan National Corporation | Parent | 11/6/1972 | 2/28/1987 |
| Fmb-Security Bank | Subsidary | 12/31/1978 | 12/30/1983 |
| Commercial Bank | Subsidary | 12/31/1978 | 9/30/1983 |
| Michigan Capital And Service Inc | Subsidary | 3/31/1978 | 11/23/1980 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Lasalle Bank Midwest National Association | Buyer | 37,562,880 | Discontinued | 3/1/1987 |