| Relationships | Role | Relationship Start | Relationship End |
| Columbia Banking System, Inc. | Parent | 8/16/1993 | 3/11/1994 |
| Columbia First Service, Inc. | Subsidary | 8/17/1993 | 3/11/1994 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Columbia State Bank | Buyer | 9,578,898 | Discontinued | 3/12/1994 |