<SEC-DOCUMENT>0000015615-25-000113.txt : 20251008
<SEC-HEADER>0000015615-25-000113.hdr.sgml : 20251008
<ACCEPTANCE-DATETIME>20251008162843
ACCESSION NUMBER:		0000015615-25-000113
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506(b) provides a "safer harbor" for a private offering
FILED AS OF DATE:		20251008
DATE AS OF CHANGE:		20251008
EFFECTIVENESS DATE:		20251008

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASTEC INC
		CENTRAL INDEX KEY:			0000015615
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER, SEWER, PIPELINE, COMM AND POWER LINE CONSTRUCTION [1623]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				650829355
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-429093
		FILM NUMBER:		251382622

	BUSINESS ADDRESS:	
		STREET 1:		800 S. DOUGLAS ROAD
		STREET 2:		10TH FLOOR
		CITY:			CORAL GABLES
		STATE:			FL
		ZIP:			33134
		BUSINESS PHONE:		3055991800

	MAIL ADDRESS:	
		STREET 1:		800 S. DOUGLAS ROAD
		STREET 2:		10TH FLOOR
		CITY:			CORAL GABLES
		STATE:			FL
		ZIP:			33134

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BURNUP & SIMS INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
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    <testOrLive>LIVE</testOrLive>

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        <entityName>MASTEC INC</entityName>
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            <street2>10TH FLOOR</street2>
            <city>CORAL GABLES</city>
            <stateOrCountry>FL</stateOrCountry>
            <stateOrCountryDescription>FLORIDA</stateOrCountryDescription>
            <zipCode>33134</zipCode>
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                <firstName>Jorge</firstName>
                <lastName>Mas</lastName>
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                <street2>12th Floor</street2>
                <city>Coral Gables</city>
                <stateOrCountry>FL</stateOrCountry>
                <stateOrCountryDescription>FLORIDA</stateOrCountryDescription>
                <zipCode>33134</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
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            <relatedPersonName>
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                <relationship>Director</relationship>
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                <zipCode>33134</zipCode>
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                <street2>12th Floor</street2>
                <city>Coral Gables</city>
                <stateOrCountry>FL</stateOrCountry>
                <stateOrCountryDescription>FLORIDA</stateOrCountryDescription>
                <zipCode>33134</zipCode>
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                <lastName>Campbell</lastName>
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                <street2>12th Floor</street2>
                <city>Coral Gables</city>
                <stateOrCountry>FL</stateOrCountry>
                <stateOrCountryDescription>FLORIDA</stateOrCountryDescription>
                <zipCode>33134</zipCode>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Ernst</firstName>
                <lastName>Csiszar</lastName>
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                <street2>12th Floor</street2>
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                <lastName>Dwyer</lastName>
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                <stateOrCountryDescription>FLORIDA</stateOrCountryDescription>
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                <lastName>Johnson</lastName>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Javier</firstName>
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        <relatedPersonInfo>
            <relatedPersonName>
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                <lastName>Parker</lastName>
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    <offeringData>
        <industryGroup>
            <industryGroupType>Other</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Over $100,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001200876-24-000030</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2021-12-30</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>true</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>194397549</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>102</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
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        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>MASTEC INC</issuerName>
                <signatureName>/s/ Alberto de Cardenas</signatureName>
                <nameOfSigner>Alberto de Cardenas</nameOfSigner>
                <signatureTitle>Executive Vice President, General Counsel and Secretary</signatureTitle>
                <signatureDate>2025-10-08</signatureDate>
            </signature>
        </signatureBlock>
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</SEC-DOCUMENT>
