| Relationships | Role | Relationship Start | Relationship End |
| Landmark Bancshares Corporation | Parent | 10/29/1993 | 2/17/1994 |
| Mega Bancshares, Inc. | Parent | 11/30/1984 | 10/28/1993 |
| Santa Ana Bancorp, Inc. | Parent | 12/17/1976 | 11/29/1984 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Belleville Branch | Buyer | Discontinued | 2/18/1994 | ||
| Mega Bank Of St. Louis County | Seller | 40,351 | Discontinued | 10/29/1993 | |
| Mega Bank Of St. Charles County | Seller | 20,563 | Discontinued | 10/29/1993 |