| Relationships | Role | Relationship Start | Relationship End |
| Lake Shore Bancorp, Inc. | Parent | 5/3/1982 | 7/8/1994 |
| Lake Shore Safe Deposit Company | Subsidary | 5/3/1982 | 12/31/1983 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Bank One, National Association | Buyer | 259,527,000 | Discontinued | 7/9/1994 | |
| Center Bank - Glen Ellyn | Seller | 73,568 | Discontinued | 5/25/1991 | |
| Upper Avenue Bank | Seller | 136,572 | Discontinued | 7/25/1981 |