| Relationships | Role | Relationship Start | Relationship End |
| Onbancorp, Inc. | Parent | 9/18/1989 | 12/31/1996 |
| Council House Realty Corporation | Subsidary | 9/18/1989 | 12/31/1996 |
| Data Crossroads, Inc. | Subsidary | 9/18/1989 | 1/15/1993 |
| Oncorp Realty Credit Inc. | Subsidary | 9/18/1989 | 1/15/1993 |
| Oncorp Insurance Brokerage Services Inc. | Subsidary | 1/1/1983 | 1/15/1993 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Onbank & Trust Co. | Buyer | 3,514,511 | Pooling of Interests | Discontinued | 1/1/1997 |
| The Oneida County Savings Bank | Seller | Discontinued | 11/19/1983 | ||
| Savings And Loan Association Of Auburn | Seller | Discontinued | 5/1/1980 |