| Relationships | Role | Relationship Start | Relationship End |
| Mcorp Financial Inc | Parent | 10/10/1984 | 12/10/1987 |
| Southwest Bancshares, Inc. | Parent | 5/18/1972 | 10/9/1984 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Mbank Houston, National Association | Buyer | 3,307,498 | Discontinued | 12/11/1987 |