| Relationships | Role | Relationship Start | Relationship End |
| Boatmen's Sunwest, Inc. | Parent | 4/1/1981 | 8/15/1997 |
| Southwest National Corporation | Parent | 9/5/1978 | 3/31/1981 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank Of America, National Association | Buyer | 322,913,000 | Pooling of Interests | Discontinued | 8/16/1997 |