| Relationships | Role | Relationship Start | Relationship End |
| Keycorp | Parent | 3/16/1992 | 11/30/1999 |
| Ameritrust Corporation | Parent | 5/15/1985 | 3/15/1992 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Empire State Plaza | Buyer | Pooling of Interests | Discontinued | 12/1/1999 |