| Relationships | Role | Relationship Start | Relationship End |
| Intermountain Bankshares Of Colorado,Inc. | Parent | 5/30/1980 | 5/7/1992 |
| Intermountain Bancorp, Inc. | Parent | 8/19/1974 | 5/29/1980 |
| First Plaza Company | Parent | 12/31/1970 | 8/18/1974 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank One, Colorado, National Association | Buyer | 4,006,503 | Discontinued | 5/8/1992 | |
| The Bank Of Westminster | Seller | 6,521 | Failure | 6/23/1988 |