| Relationships | Role | Relationship Start | Relationship End |
| First Security Corporation | Parent | 11/20/1993 | 2/16/2001 |
| First National Financial Corporation | Parent | 12/23/1985 | 11/19/1993 |
| Popular Services, Inc. | Parent | 12/31/1970 | 3/22/1976 |
| Firstbank, Farmington, New Mexico | Subsidary | 12/30/1992 | 8/27/1993 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank Of The West | Buyer | 82,566,808 | Acquisition | Discontinued | 2/17/2001 |
| First Security Bank Of Southern New Mexico, National Association | Seller | 442,312 | Pooling of Interests | Discontinued | 11/5/1999 |
| New Mexico Fsa | Seller | 180,298 | Failure | 6/16/1990 | |
| American Federal Savings And Loan Association | Seller | 124,952 | Failure | 6/9/1990 |