| Relationships | Role | Relationship Start | Relationship End |
| Western Bancorp | Parent | 6/5/1997 | 12/15/1997 |
| California Commercial Bankshares | Parent | 1/10/1983 | 6/4/1997 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Southern California Bank | Buyer | 1,109,407 | Pooling of Interests | Discontinued | 12/16/1997 |
| Monarch Bank | Seller | 78,037 | Pooling of Interests | Discontinued | 6/7/1997 |
| Lake Forest Office | Seller | Discontinued | 5/5/1988 |