| Relationships | Role | Relationship Start | Relationship End |
| First Security Corporation | Parent | 2/2/1998 | 6/30/1998 |
| Rio Grande Bancshares, Inc. | Parent | 9/13/1985 | 2/1/1998 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| First Security Bank Of Southern New Mexico, National Association | Buyer | 442,312 | Pooling of Interests | Discontinued | 7/1/1998 |
| Moncor Bank, National Association | Seller | 33,293 | Failure | 9/13/1985 |