<SEC-DOCUMENT>0000719220-18-000073-index.html : 20180801
<SEC-HEADER>0000719220-18-000073.hdr.sgml : 20180801
<ACCEPTANCE-DATETIME>20180801155310
ACCESSION NUMBER:		0000719220-18-000073
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20180801
DATE AS OF CHANGE:		20180801
EFFECTIVENESS DATE:		20180801

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			S&T BANCORP INC
		CENTRAL INDEX KEY:			0000719220
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				251434426
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-226488
		FILM NUMBER:		18984625

	BUSINESS ADDRESS:	
		STREET 1:		800 PHILADELPHIA STREET
		STREET 2:		PO BOX 190
		CITY:			INDIANA
		STATE:			PA
		ZIP:			15701
		BUSINESS PHONE:		724-427-2347

	MAIL ADDRESS:	
		STREET 1:		800 PHILADELPHIA STREET
		STREET 2:		PO BOX 190
		CITY:			INDIANA
		STATE:			PA
		ZIP:			15701
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3ASR
<SEQUENCE>1
<FILENAME>stbaforms3asr8118.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: stbaforms3asr8118.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>exhibit51.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 2 - file: exhibit51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.1
<SEQUENCE>3
<FILENAME>exhibit121.htm
<DESCRIPTION>EXHIBIT 12.1
<TEXT>
Document 3 - file: exhibit121.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>4
<FILENAME>exhibit231kpmgconsent.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 4 - file: exhibit231kpmgconsent.htm

</DOCUMENT>
</SEC-DOCUMENT>