| Relationships | Role | Relationship Start | Relationship End |
| Security Bancorp, Inc. | Parent | 12/11/1980 | 9/24/1986 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank Of New England, National Association | Buyer | 13,428,614 | Discontinued | 9/25/1986 | |
| Lowell Bank And Trust Company | Seller | 53,843 | Discontinued | 6/1/1983 | |
| Security Trust Company | Seller | Discontinued | 2/24/1964 |