| Relationships | Role | Relationship Start | Relationship End |
| Pinnacle Banc Group, Inc. | Parent | 5/1/1988 | 7/9/1993 |
| La Grange Park Banc Corporation | Parent | 12/31/1982 | 4/30/1988 |
| La Grange Park Banc Corporation | Parent | 9/2/1980 | 12/30/1982 |
| Park Capital Corp. | Parent | 12/31/1978 | 9/1/1980 |
| Park Capital Corp. | Parent | 12/31/1970 | 12/30/1978 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Pinnacle Bank | Buyer | 864,866 | Discontinued | 7/10/1993 |