| Relationships | Role | Relationship Start | Relationship End |
| South Plains Delaware Financial Corporation | Parent | 12/8/1998 | 8/18/2000 |
| Lockney Holding Company | Parent | 3/31/1991 | 12/7/1998 |
| West Texas National Bancshares, Inc. | Parent | 3/21/1990 | 3/30/1991 |
| Lockney Bancshares, Inc. | Parent | 3/19/1979 | 3/20/1990 |
| Clar Schacht Insurance Agency, Inc. | Subsidary | 12/8/1998 | 3/31/1999 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| City Bank | Buyer | 2,554,089 | Acquisition | Charter Retained | 8/19/2000 |
| Olton State Bank | Seller | 19,964 | Discontinued | 1/1/1993 |