| Relationships | Role | Relationship Start | Relationship End |
| Westamerica Bancorporation | Parent | 7/18/1995 | 9/15/1995 |
| North Bay Bancorp | Parent | 4/1/1985 | 7/17/1995 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Westamerica Bank | Buyer | 5,267,501 | Pooling of Interests | Discontinued | 9/16/1995 |