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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001207681-05-000003.txt : 20051028
<SEC-HEADER>0001207681-05-000003.hdr.sgml : 20051028
<ACCEPTANCE-DATETIME>20051028153251
ACCESSION NUMBER:		0001207681-05-000003
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20051018
FILED AS OF DATE:		20051028
DATE AS OF CHANGE:		20051028

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SEABOARD CORP /DE/
		CENTRAL INDEX KEY:			0000088121
		STANDARD INDUSTRIAL CLASSIFICATION:	MEAT PACKING PLANTS [2011]
		IRS NUMBER:				042260388
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		9000 W. 67TH STREET
		CITY:			SHAWNEE MISSION
		STATE:			KS
		ZIP:			66202
		BUSINESS PHONE:		9136768800

	MAIL ADDRESS:	
		STREET 1:		9000 W. 67TH STREET
		CITY:			SHAWNEE MISSION
		STATE:			KS
		ZIP:			66202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SEABOARD ALLIED MILLING CORP
		DATE OF NAME CHANGE:	19820328

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HATHAWAY BAKERIES INC
		DATE OF NAME CHANGE:	19710315

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SEABOARD FLOUR LLC
		CENTRAL INDEX KEY:			0001207681
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03390
		FILM NUMBER:		051163110

	BUSINESS ADDRESS:	
		STREET 1:		822 BOYLSTON STREET
		STREET 2:		SUITE 301
		CITY:			CHESTNUT HILL
		STATE:			MA
		ZIP:			02467
		BUSINESS PHONE:		6177394480

	MAIL ADDRESS:	
		STREET 1:		822 BOYLSTON STREET
		STREET 2:		SUITE 301
		CITY:			CHESTNUT HILL
		STATE:			MA
		ZIP:			02467
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2005-10-18</periodOfReport>

    <dateOfOriginalSubmission>2005-10-20</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000088121</issuerCik>
        <issuerName>SEABOARD CORP /DE/</issuerName>
        <issuerTradingSymbol>SEB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001207681</rptOwnerCik>
            <rptOwnerName>SEABOARD FLOUR LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>822 BOYLSTON STREET</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 301</rptOwnerStreet2>
            <rptOwnerCity>CHESTNUT HILL</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02467</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-10-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6313.34</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1317.44</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>893948.24</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On 10/18/05, Reporting Person (&quot;RP&quot;) became entitled to receive 6,313.34 shares of Issuer pursuant to an &quot;earn-out&quot; provision in a reorganization agreement (&quot;Agreement&quot;) dated 10/18/02, between Issuer and RP (successor to Seaboard Flour Corporation). The Agreement provides that RP will periodically receive additional shares of Issuer, for no additional consideration, based on a formula set forth in the Agreement. The 6,313.34 shares of common stock of Issuer (&quot;Issuer's Shares&quot;) to which this Form 4 applies, were determined on 10/18/05 after completion of review provisions of the Agreement and is based on the per share closing price of Issuer's Shares on The American Stock Exchange for each of the regular trading sessions between 9/19/05 and 9/30/05. RP's right to receive additional Issuer's Shares, including 6,313.34 shares to which this Form 4 applies, became fixed and irrevocable 10/18/05, the effective date of the transactions contemplated 
pursuant to the Agreement.</footnote>
        <footnote id="F2">This amended Form 4a is being filed to correct error in footnote #1. RP's right to receive additional Issuer's Shares became fixed and irrevocable on 10/18/05 not 10/18/02 as misstated in original Form 4.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ H. H. Bresky</signatureName>
        <signatureDate>2005-10-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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