| Relationships | Role | Relationship Start | Relationship End |
| First Oak Brook Bancshares, Inc. | Parent | 9/30/1983 | 4/30/1986 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Oak Brook Bank | Buyer | 2,537,582 | Discontinued | 5/1/1986 |
| Relationships | Role | Relationship Start | Relationship End |
| First Oak Brook Bancshares, Inc. | Parent | 9/30/1983 | 4/30/1986 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Oak Brook Bank | Buyer | 2,537,582 | Discontinued | 5/1/1986 |