| Relationships | Role | Relationship Start | Relationship End |
| National Bancshares Corporation Of Texas | Parent | 12/7/1983 | 6/1/1990 |
| Coastal Bend Bancshares, Inc. | Parent | 12/31/1982 | 12/6/1983 |
| Coastal Bend Bancshares, Inc. | Parent | 7/21/1981 | 12/30/1982 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Nationsbank Of Texas, National Association | Buyer | 62,921,254 | Failure | 6/2/1990 | |
| Nbc Bank - South | Seller | 17,550 | Discontinued | 9/30/1987 | |
| Nbc Bank - Corpus Christi | Seller | 110,092 | Discontinued | 9/30/1987 |