| Relationships | Role | Relationship Start | Relationship End |
| First Midwest Bancorp, Inc. | Parent | 1/30/1985 | 5/18/1995 |
| First Security Bancorp., Inc. | Parent | 7/1/1981 | 1/29/1985 |
| First Midwest, S.C. | Subsidary | 1/3/1995 | 5/18/1995 |
| Midwest Banks Data Processing Inc | Subsidary | 3/31/1983 | 2/1/1985 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| First Midwest Bank/Illinois, National Association | Buyer | 819,486 | Pooling of Interests | Discontinued | 5/19/1995 |
| Community Federal Savings Bank | Seller | 73,680 | Failure | 11/3/1990 | |
| First Midwest Bank/Knox County, National Association | Seller | 82,581 | Discontinued | 4/1/1988 |