| Relationships | Role | Relationship Start | Relationship End |
| Whitney Holding Corporation | Parent | 1/24/2001 | 3/9/2001 |
| Houston American Financial Corporation | Parent | 11/3/1980 | 5/31/1990 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Whitney National Bank | Buyer | 11,477,590 | Pooling of Interests | Discontinued | 3/10/2001 |
| Unitedbank - Houston | Seller | 217,304 | Failure | 5/4/1987 | |
| American National Bank | Seller | 12,374 | Failure | 10/15/1979 |