| Relationships | Role | Relationship Start | Relationship End |
| Mosaic Corp | Parent | 12/8/1995 | 4/18/1997 |
| Co-Operative Bancorp | Parent | 3/5/1987 | 10/31/1988 |
| Builders Collaborative, Inc. | Subsidary | 12/8/1995 | 4/18/1997 |
| Walden Financial Corporation | Subsidary | 12/8/1995 | 4/18/1997 |
| Walden Securities Corporation | Subsidary | 12/8/1995 | 4/18/1997 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Ustrust | Buyer | 5,732,885 | Pooling of Interests | Discontinued | 4/19/1997 |
| Depositors Trust Company | Seller | 70,356 | Discontinued | 6/4/1994 | |
| Randolph Co-Operative Bank | Seller | 56,597 | Discontinued | 8/1/1989 | |
| Quincy Avenue Branch | Seller | Discontinued | 11/1/1988 | ||
| Arlington Co-Operative Bank | Seller | Discontinued | 7/1/1983 |