0000719220-09-000018 8-K 3 20090930 2.02 20091019 20091019 S&T BANCORP INC 0000719220 6022 251434426 PA 1231 8-K 34 000-12508 091124691 800 PHILADELPHIA STREET PO BOX 190 INDIANA PA 15701 7244651466 800 PHILADELPHIA STREET PO BOX 190 INDIANA PA 15701 8-K 1 st8k3q2009.htm FORM 8-K DATED OCTOBER 19, 2009 EX-99 2 press10192009.htm PRESS RELEASE DATED OCTOBER 19, 2009 EX-99 3 stba3q09.htm 8-QUARTER SPREADSHEET