| Relationships | Role | Relationship Start | Relationship End |
| Mcorp Financial Inc | Parent | 10/10/1984 | 6/9/1988 |
| Southwest Bancshares, Inc. | Parent | 3/29/1982 | 10/9/1984 |
| Southmore Tatar Corporation | Subsidary | 3/29/1982 | 6/9/1988 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Mbank Houston, National Association | Buyer | 3,307,498 | Discontinued | 6/10/1988 | |
| First Nb | Seller | Discontinued | 12/5/1960 |