<SEC-DOCUMENT>0000719220-21-000093-index.html : 20210805
<SEC-HEADER>0000719220-21-000093.hdr.sgml : 20210805
<ACCEPTANCE-DATETIME>20210804173133
ACCESSION NUMBER:		0000719220-21-000093
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210805
DATE AS OF CHANGE:		20210804
EFFECTIVENESS DATE:		20210805

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:	333-258470
		FILM NUMBER:		211145310

	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>stba2021_forms-3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: stba2021_forms-3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>stba2021_forms-3legalopini.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: stba2021_forms-3legalopini.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>exhibit231eyconsent.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: exhibit231eyconsent.htm

</DOCUMENT>
</SEC-DOCUMENT>