    <SEC-DOCUMENT>0001140361-21-032246-index.html : 20210923
    <SEC-HEADER>0001140361-21-032246.hdr.sgml : 20210923
    <ACCEPTANCE-DATETIME>20210923161203
    ACCESSION NUMBER:		0001140361-21-032246
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20210923
    DATE AS OF CHANGE:		20210923

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MATRIX SERVICE CO
    		CENTRAL INDEX KEY:			0000866273
    		STANDARD INDUSTRIAL CLASSIFICATION:	CONSTRUCTION SPECIAL TRADE CONTRACTORS [1700]
    		IRS NUMBER:				731352174
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0630

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-15461
    		FILM NUMBER:		211272663

    	BUSINESS ADDRESS:
    		STREET 1:		5100 EAST SKELLY DRIVE
    		STREET 2:		SUITE 500
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74135
    		BUSINESS PHONE:		9188388822

    	MAIL ADDRESS:
    		STREET 1:		5100 EAST SKELLY DRIVE
    		STREET 2:		SUITE 500
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74135
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>ny20000423x3_defa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: ny20000423x3_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>ny20000423x3_nac01.jpg
    <TEXT>
    Document 2 - file: ny20000423x3_nac01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>ny20000423x3_nac02.jpg
    <TEXT>
    Document 3 - file: ny20000423x3_nac02.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>