| Relationships | Role | Relationship Start | Relationship End |
| Irving Bank Corporation | Parent | 5/21/1973 | 9/30/1989 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Nbt Bank, National Association | Buyer | 8,699,767 | Discontinued | 10/1/1989 |
| Relationships | Role | Relationship Start | Relationship End |
| Irving Bank Corporation | Parent | 5/21/1973 | 9/30/1989 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Nbt Bank, National Association | Buyer | 8,699,767 | Discontinued | 10/1/1989 |