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Miller James Harry – ‘4’ for 10/1/22 re: Matrix Service Co.

On:  Monday, 10/3/22, at 5:19pm ET   ·   For:  10/1/22   ·   As:  Director   ·   Accession #:  866273-22-99   ·   File #:  1-15461

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  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

10/03/22  Miller James Harry                4          Director    1:5K   Matrix Service Co.                Matrix Service Co.

Statement of Changes in Beneficial Ownership of Securities by an Insider   —   Form 4   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 4           Statement of Changes in Beneficial Ownership of     HTML      6K 
                Securities by an Insider --                                      
                wf-form4_166483186062413.xml/3.6


        

This ‘4’ Document is an XML Data File that may be rendered in various formats:

  Form 4    –   Plain Text   –  SEC Website  –  EDGAR System  –    XML Data    –  <?xml?> File
 
 
XML Data rendering:  Statement of Changes in Beneficial Ownership of Securities by an Insider — wf-form4_166483186062413.xml/3.6
 
                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<ownershipDocument>
<schemaVersion> X0306 </schemaVersion>
<documentType> 4 </documentType>
<periodOfReport> 2022-10-01 </periodOfReport>
<notSubjectToSection16> 0 </notSubjectToSection16>
<issuer>
<issuerCik> 0000866273 </issuerCik>
<issuerName> MATRIX SERVICE CO </issuerName>
<issuerTradingSymbol> MTRX </issuerTradingSymbol>
</issuer>
<reportingOwner>
<reportingOwnerId>
<rptOwnerCik> 0001608365 </rptOwnerCik>
<rptOwnerName> MILLER JAMES HARRY </rptOwnerName>
</reportingOwnerId>
<reportingOwnerAddress>
<rptOwnerStreet1> 5100 EAST SKELLY DRIVE </rptOwnerStreet1>
<rptOwnerStreet2> SUITE 100 </rptOwnerStreet2>
<rptOwnerCity> TULSA </rptOwnerCity>
<rptOwnerState> OK </rptOwnerState>
<rptOwnerZipCode> 74135 </rptOwnerZipCode>
<rptOwnerStateDescription></rptOwnerStateDescription>
</reportingOwnerAddress>
<reportingOwnerRelationship>
<isDirector> 1 </isDirector>
<isOfficer> 0 </isOfficer>
<isTenPercentOwner> 0 </isTenPercentOwner>
<isOther> 0 </isOther>
<officerTitle></officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<nonDerivativeTable>
<nonDerivativeTransaction>
<securityTitle>
<value> COMMON STOCK </value>
<footnoteId id="F1"/>
</securityTitle>
<transactionDate>
<value> 2022-10-01 </value>
<footnoteId id="F2"/>
</transactionDate>
<transactionCoding>
<transactionFormType> 5 </transactionFormType>
<transactionCode> A </transactionCode>
<equitySwapInvolved> 0 </equitySwapInvolved>
<footnoteId id="F1"/>
</transactionCoding>
<transactionTimeliness>
<value> E </value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value> 2416 </value>
</transactionShares>
<transactionPricePerShare>
<value> 4.14 </value>
<footnoteId id="F3"/>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value> A </value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value> 60376 </value>
<footnoteId id="F4"/>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value> D </value>
</directOrIndirectOwnership>
</ownershipNature>
</nonDerivativeTransaction>
</nonDerivativeTable>
<derivativeTable></derivativeTable>
<footnotes>
<footnote id="F1"> MATRIX SERVICE COMPANY COMMON STOCK PURCHASED VIA THE MATRIX SERVICE COMPANY 2011 EMPLOYEE STOCK PURCHASE PLAN ("THE ESPP") IN A TRANSACTION THAT WAS EXEMPT UNDER BOTH RULE 16b-3(c) AND RULE 16b-3(d) AND IS VOLUNTARILY REPORTED. </footnote>
<footnote id="F2"> SHARES WERE PURCHASED VIA THE ESPP. THE OFFERING PERIOD CONSISTED OF THE THREE MONTHS ENDED SEPTEMBER 30, 2022. THE SHARES WERE ACQUIRED ON THE FIRST DAY AFTER THE END OF THE OFFERING PERIOD. </footnote>
<footnote id="F3"> PER THE ESPP, THE PURCHASE PRICE WAS DETERMINED BY THE LAST CLOSING CONSOLIDATED BID PRICE PER SHARE ON THE PURCHASE DATE. </footnote>
<footnote id="F4"> INCLUDES 51,259 SHARES OF MATRIX SERVICE COMPANY COMMON STOCK OWNED OUTRIGHT. </footnote>
</footnotes>
<remarks></remarks>
<ownerSignature>
<signatureName> James H. Miller </signatureName>
<signatureDate> 2022-10-03 </signatureDate>
</ownerSignature>
</ownershipDocument>


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Filing Submission 0000866273-22-000099   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
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