| Relationships | Role | Relationship Start | Relationship End |
| Berkshire Bank | Parent | 8/7/2015 | |
| Citizens Bank Of Massachusetts | Parent | 1/12/2000 | 7/27/2001 |
| Ustrust | Parent | 11/25/1997 | 1/11/2000 |
| Ust Corp. | Parent | 10/15/1997 | 11/24/1997 |
| Pt Investment Corporation | Parent | 3/21/1985 | 8/31/1987 |
| Key Bancshares Of Maine Inc. | Parent | 3/1/1984 | 7/30/1984 |
| Depositors Corporation | Parent | 12/31/1976 | 2/29/1984 |
| Depositors Corporation | Parent | 12/31/1975 | 12/30/1976 |
| Depositors Corporation | Parent | 4/30/1974 | 12/30/1975 |
| Firestone Financial Canada, Ltd | Subsidary | 10/15/1997 | 7/26/2001 |