<SUBMISSION>
<ACCESSION-NUMBER>0001140361-09-019418
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20090818
<FILING-DATE>20090820
<DATE-OF-FILING-DATE-CHANGE>20090820
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Smith Catherine R
<CIK>0001322028
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-06776
<FILM-NUMBER>091027137
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>1600 TECHNOLOGY WAY
<STREET2>P.O. BOX 231
<CITY>LATROBE
<STATE>PA
<ZIP>15650
</MAIL-ADDRESS>
<FORMER-NAME>
<FORMER-CONFORMED-NAME>Smith Cathy R
<DATE-CHANGED>20050329
</FORMER-NAME>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CENTEX CORP
<CIK>0000018532
<ASSIGNED-SIC>1531
<IRS-NUMBER>750778259
<STATE-OF-INCORPORATION>NV
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>2728 N HARWOOD
<STREET2>-
<CITY>DALLAS
<STATE>TX
<ZIP>75201
<PHONE>214-981-5000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>PO BOX 199000
<STREET2>-
<CITY>DALLAS
<STATE>TX
<ZIP>75219
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>CENTEX CONSTRUCTION CO INC
<DATE-CHANGED>19681211
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
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            <rptOwnerName>Smith Catherine R</rptOwnerName>
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            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75201-1516</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; CFO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <transactionPricePerShare>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
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            </conversionOrExercisePrice>
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                <value>2009-08-18</value>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>58717</value>
                </transactionShares>
                <transactionPricePerShare>
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            <exerciseDate>
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            <expirationDate>
                <value>2013-10-16</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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                </sharesOwnedFollowingTransaction>
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        <derivativeTransaction>
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                <value>45.53</value>
            </conversionOrExercisePrice>
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                <value>2009-08-18</value>
            </transactionDate>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>22576</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F7"/>
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            <expirationDate>
                <value>2014-05-10</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
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            <conversionOrExercisePrice>
                <value>22.08</value>
            </conversionOrExercisePrice>
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                <value>2009-08-18</value>
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                <value></value>
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                <transactionShares>
                    <value>94816</value>
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                <transactionPricePerShare>
                    <footnoteId id="F8"/>
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                    <value>D</value>
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                <value>2015-05-07</value>
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    <footnotes>
        <footnote id="F1">Forfeiture of restricted stock units awarded May 13,  2009 pursuant to the terms of the award agreement and the Agreement and Plan of Merger dated as of April 7, 2009 between Centex Corporation and Pulte Homes, Inc. (&quot;Merger Agreement&quot;).</footnote>
        <footnote id="F2">Disposed of pursuant to the Merger Agreement in exchange for 69,395 shares of Pulte common stock, after reduction of shares to pay tax liability upon the vesting of restricted stock.</footnote>
        <footnote id="F3">Disposed of pursuant to the Merger Agreement in exchange for 22,808 shares of Pulte common stock owned directly.</footnote>
        <footnote id="F4">Disposed of pursuant to the Merger Agreement in exchange for 70,161 shares of restricted Pulte common stock that vest 1/3 each on March 31, 2010, 2011 and 2012, and are subject to partial accelerated vesting in the event of a qualified termination.</footnote>
        <footnote id="F5">On the merger effective date, shares of Pulte common stock had a market value of $12.33 per share.</footnote>
        <footnote id="F6">This option, which provided for vesting in 5 equal annual installments beginning October 16, 2007, was assumed by Pulte Homes, Inc. in the merger and replaced with a fully vested option to purchase 57,249 shares of Pulte common stock for $53.83 per share.</footnote>
        <footnote id="F7">This option, which provided for vesting in 3 equal annual installments beginning March 31, 2009, was assumed by Pulte Homes, Inc. in the merger and replaced with a fully vested option to purchase 22,011 shares of Pulte common stock for $46.70 per share.</footnote>
        <footnote id="F8">This option, which provided for vesting in 3 equal annual installments beginning March 31, 2009, was assumed by Pulte Homes, Inc. in the merger and replaced with a fully vested option to purchase 92,445 shares of Pulte common stock for $22.65 per share.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>James R. Peacock III as attorney-in-fact for Catherine R. Smith</signatureName>
        <signatureDate>2009-08-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
