| Relationships | Role | Relationship Start | Relationship End |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Frost Bank | Buyer | 29,633,441 | Pooling of Interests | Discontinued | 5/19/1995 |
| Woodway Bank & Trust, National Association | Seller | 35,375 | Failure | 10/5/1990 | |
| Plaza Del Oro National Bank | Seller | 15,697 | Failure | 1/12/1990 | |
| National Bank Of Texas | Seller | 19,430 | Failure | 5/20/1988 |