| Relationships | Role | Relationship Start | Relationship End |
| Bank Of The Southwest National Association, Houston | Parent | 12/31/1980 | 12/31/1982 |
| Southwest Bancshares, Inc. | Parent | 12/31/1979 | 12/30/1980 |
| Bank Of The Southwest National Association, Houston | Parent | 12/31/1976 | 12/30/1979 |
| Southwest Bancshares, Inc. | Parent | 12/10/1970 | 12/30/1976 |