    <SEC-DOCUMENT>0001140361-19-015405-index.html : 20190821
    <SEC-HEADER>0001140361-19-015405.hdr.sgml : 20190821
    <ACCEPTANCE-DATETIME>20190820214835
    ACCESSION NUMBER:		0001140361-19-015405
    CONFORMED SUBMISSION TYPE:	S-4/A
    PUBLIC DOCUMENT COUNT:		17
    FILED AS OF DATE:		20190821
    DATE AS OF CHANGE:		20190820

    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-4/A
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-232611
    		FILM NUMBER:		191041154

    	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-4/A
    <SEQUENCE>1
    <FILENAME>nt10003111x2_s4a.htm
    <DESCRIPTION>S-4/A
    <TEXT>
    Document 1 - file: nt10003111x2_s4a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-5.1
    <SEQUENCE>2
    <FILENAME>nt10003111x2_ex5-1.htm
    <DESCRIPTION>EXHIBIT 5.1
    <TEXT>
    Document 2 - file: nt10003111x2_ex5-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-8.1
    <SEQUENCE>3
    <FILENAME>nt10003111x2_ex8-1.htm
    <DESCRIPTION>EXHIBIT 8.1
    <TEXT>
    Document 3 - file: nt10003111x2_ex8-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-8.2
    <SEQUENCE>4
    <FILENAME>nt10003111x2_ex8-2.htm
    <DESCRIPTION>EXHIBIT 8.2
    <TEXT>
    Document 4 - file: nt10003111x2_ex8-2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.4
    <SEQUENCE>5
    <FILENAME>nt10003111x2_ex23-4.htm
    <DESCRIPTION>EXHIBIT 23.4
    <TEXT>
    Document 5 - file: nt10003111x2_ex23-4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.5
    <SEQUENCE>6
    <FILENAME>nt10003111x2_ex23-5.htm
    <DESCRIPTION>EXHIBIT 23.5
    <TEXT>
    Document 6 - file: nt10003111x2_ex23-5.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.6
    <SEQUENCE>7
    <FILENAME>nt10003111x2_ex23-6.htm
    <DESCRIPTION>EXHIBIT 23.6
    <TEXT>
    Document 7 - file: nt10003111x2_ex23-6.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>8
    <FILENAME>nt10003111x2_ex99-1.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 8 - file: nt10003111x2_ex99-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>9
    <FILENAME>nt10003111x2_ex99-2.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 9 - file: nt10003111x2_ex99-2.htm

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>logo_dnb.jpg
    <TEXT>
    Document 10 - file: logo_dnb.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>logo_pnc.jpg
    <TEXT>
    Document 11 - file: logo_pnc.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>logo_stradley.jpg
    <TEXT>
    Document 12 - file: logo_stradley.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>nt10003111x2_ex99-2image01.jpg
    <TEXT>
    Document 13 - file: nt10003111x2_ex99-2image01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>nt10003111x2_ex99-2image02.jpg
    <TEXT>
    Document 14 - file: nt10003111x2_ex99-2image02.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>nt10003111x2_footer.jpg
    <TEXT>
    Document 15 - file: nt10003111x2_footer.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>sig_geraldfsopp.jpg
    <TEXT>
    Document 16 - file: sig_geraldfsopp.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>sig_williamjhieb.jpg
    <TEXT>
    Document 17 - file: sig_williamjhieb.jpg

    </DOCUMENT>
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