| Relationships | Role | Relationship Start | Relationship End |
| Southwest Bancshares Corporation | Parent | 12/31/1979 | 5/18/1987 |
| Southwest Bancshares Corporation | Parent | 3/17/1975 | 12/30/1979 |
| Southwest Bancshares Insurance Agency, Inc. | Subsidary | 11/1/1986 | 5/18/1987 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Citizens Bank | Buyer | 136,612 | Failure | 7/23/1987 |