| Relationships | Role | Relationship Start | Relationship End |
| Firstbank Of Illinois Co. | Parent | 10/31/1986 | 6/24/1988 |
| Troy Bancgroup & Co. | Parent | 5/1/1980 | 10/30/1986 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| United Illinois Bank Of Collinsville | Buyer | 123,438 | Discontinued | 6/25/1988 |