0001193125-09-167131 10-Q 4 20090630 20090806 20090806 S&T BANCORP INC 0000719220 6022 251434426 PA 1231 10-Q 34 000-12508 09991647 800 PHILADELPHIA STREET PO BOX 190 INDIANA PA 15701 7244651466 800 PHILADELPHIA STREET PO BOX 190 INDIANA PA 15701 10-Q 1 d10q.htm FORM 10-Q EX-31.1 2 dex311.htm SECTION 302 CEO CERTIFICATION EX-31.2 3 dex312.htm SECTION 302 CFO CERTIFICATION EX-32 4 dex32.htm SECTION 906 CEO AND CFO CERTIFICATION