| Relationships | Role | Relationship Start | Relationship End |
| Firstbank Holding Company | Parent | 1/9/1986 | 12/8/1991 |
| Firstbank Holding Company | Parent | 6/4/1984 | 1/8/1986 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Firstbank Of Arapahoe County | Buyer | 424,876 | Discontinued | 12/9/1991 |