0001127602-09-012913 4 1 20090601 20090602 20090602 YOUNG GREGOR T IV 0001157935 4 34 000-12508 09868893 C/O S&T BANCORP INC P O BOX 190 INDIANA PA 15701 S&T BANCORP INC 0000719220 6022 251434426 PA 1231 800 PHILADELPHIA STREET PO BOX 190 INDIANA PA 15701 7244651466 800 PHILADELPHIA STREET PO BOX 190 INDIANA PA 15701 4 1 form4.xml PRIMARY DOCUMENT