| Relationships | Role | Relationship Start | Relationship End |
| Keycorp | Parent | 6/30/1972 | 12/31/1981 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Key Bank Of Southeastern New York National Association | Buyer | 1,177,222 | Discontinued | 1/1/1982 | |
| Kerhonkson National Bank | Seller | Discontinued | 12/2/1968 | ||
| First National Bank Of Marlboro | Seller | Discontinued | 4/1/1965 |