| Relationships | Role | Relationship Start | Relationship End |
| Mercantile Financial Enterprises, Inc. | Parent | 9/15/1995 | 6/18/1999 |
| Mcorp Financial Inc | Parent | 10/10/1984 | 12/21/1990 |
| Southwest Bancshares, Inc. | Parent | 12/31/1978 | 10/9/1984 |
| Southwest Bancshares, Inc. | Parent | 10/4/1972 | 12/30/1978 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Wells Fargo Bank Texas, National Association | Buyer | 24,480,262 | Pooling of Interests | Discontinued | 6/19/1999 |
| New First City, Texas - Corpus Christi, National Association | Seller | 369,992 | Discontinued | 2/14/1993 | |
| Mbank Harlingen, National Association | Seller | 41,003 | Discontinued | 9/26/1987 |