| Relationships | Role | Relationship Start | Relationship End |
| S & T Bancorp, Inc. | Parent | 6/30/2007 | |
| S & T Bancorp, Inc. | Parent | 6/24/1988 | 6/29/2007 |
| Allegheny Valley Bancorp, Inc. | Subsidary | 2/18/2005 | |
| Cbt Financial Corp. | Subsidary | 2/27/2004 | 9/30/2010 |
| Ibt Bancorp, Inc. | Subsidary | 6/15/2004 | 6/6/2008 |
| Elderton State Bank | Subsidary | 9/7/2002 | 9/13/2006 |
| Allegheny Valley Bancorp, Inc. | Subsidary | 12/22/2004 | 2/17/2005 |
| Ibt Bancorp, Inc. | Subsidary | 5/17/2004 | 6/14/2004 |