| Relationships | Role | Relationship Start | Relationship End |
| Mcorp Financial Inc | Parent | 10/10/1984 | 12/3/1987 |
| Southwest Bancshares, Inc. | Parent | 2/14/1974 | 10/9/1984 |
| Interfirst Securities Co In Dallas | Parent | 12/31/1973 | 2/13/1974 |
| Interfirst Securities Co In Dallas | Parent | 6/30/1969 | 12/30/1973 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Mbank Dallas, National Association | Buyer | 6,556,056 | Discontinued | 12/4/1987 |