| Relationships | Role | Relationship Start | Relationship End |
| Security Bancorp, Inc. | Parent | 4/17/1975 | 7/31/1986 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| First Of America Bank-Security | Buyer | 1,947,530 | Discontinued | 8/1/1986 | |
| Security Bank Oakland County | Seller | 12,126 | Discontinued | 6/1/1983 |