<SEC-DOCUMENT>0001127602-24-007073.txt : 20240227
<SEC-HEADER>0001127602-24-007073.hdr.sgml : 20240227
<ACCEPTANCE-DATETIME>20240227151620
ACCESSION NUMBER:		0001127602-24-007073
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240221
FILED AS OF DATE:		20240227
DATE AS OF CHANGE:		20240227

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Brooks Oliver W
		CENTRAL INDEX KEY:			0001943383
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12744
		FILM NUMBER:		24685807

	MAIL ADDRESS:	
		STREET 1:		4123 PARKLAKE AVENUE
		CITY:			RALEIGH
		STATE:			NC
		ZIP:			27612

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARTIN MARIETTA MATERIALS INC
		CENTRAL INDEX KEY:			0000916076
		STANDARD INDUSTRIAL CLASSIFICATION:	MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
		ORGANIZATION NAME:           	01 Energy & Transportation
		IRS NUMBER:				561848578
		STATE OF INCORPORATION:			NC
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4123 PARKLAKE AVE
		CITY:			RALEIGH
		STATE:			NC
		ZIP:			27612
		BUSINESS PHONE:		919-781-4550

	MAIL ADDRESS:	
		STREET 1:		4123 PARKLAKE AVE
		CITY:			RALEIGH
		STATE:			NC
		ZIP:			27612
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>form4a.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2024-02-21</periodOfReport>

    <dateOfOriginalSubmission>2024-02-22</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0000916076</issuerCik>
        <issuerName>MARTIN MARIETTA MATERIALS INC</issuerName>
        <issuerTradingSymbol>MLM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001943383</rptOwnerCik>
            <rptOwnerName>Brooks Oliver W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4123 PARKLAKE AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>RALEIGH</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>27612</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>SVP - Enterprise Excellence</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-02-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>262</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3944</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On February 22, 2024, the reporting person filed a Form 4 reporting the shares reflecting the amount of taxes withheld in connection with the settlement of performance share units into common stock that were granted under the Martin Marietta Amended and Restated Stock Based Award Plan on February 17, 2021. The amount of shares received under the grant depended on the achievement of performance goals during a three-year performance period from January 1, 2021 through December 31, 2023. On February 20, 2024, Martin Marietta's Management Development and Compensation Committee certified the attainment of the applicable performance goals and approved the settlement of the PSU grant. The previously filed Form 4 did not include the gross shares awarded upon achievement of the performance goals.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Roselyn R. Bar, attorney-in-fact</signatureName>
        <signatureDate>2024-02-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
