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<SEC-DOCUMENT>0001104659-10-056983.txt : 20101108
<SEC-HEADER>0001104659-10-056983.hdr.sgml : 20101108
<ACCEPTANCE-DATETIME>20101108190306
ACCESSION NUMBER:		0001104659-10-056983
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101104
FILED AS OF DATE:		20101108
DATE AS OF CHANGE:		20101108

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Behring Alexandre
		CENTRAL INDEX KEY:			0001421706

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08022
		FILM NUMBER:		101173816

	MAIL ADDRESS:	
		STREET 1:		C/O 3G CAPITAL INC.
		STREET 2:		800 THIRD AVENUE, 31ST FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CSX CORP
		CENTRAL INDEX KEY:			0000277948
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROADS, LINE-HAUL OPERATING [4011]
		IRS NUMBER:				621051971
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1226

	BUSINESS ADDRESS:	
		STREET 1:		500 WATER STREET
		STREET 2:		15TH FLOOR
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202
		BUSINESS PHONE:		9043593200

	MAIL ADDRESS:	
		STREET 1:		500 WATER STREET
		STREET 2:		15TH FLOOR
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32202
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
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    <schemaVersion>X0303</schemaVersion>

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    <periodOfReport>2010-11-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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        <issuerName>CSX CORP</issuerName>
        <issuerTradingSymbol>CSX</issuerTradingSymbol>
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            <rptOwnerStreet2>37TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10016</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <footnotes>
        <footnote id="F1">3G Capital Partners Ltd. (&quot;3G Capital Ltd.&quot;) is the general partner of 3G Capital Partners, L.P. (&quot;3G Capital L.P.&quot;), which is the sole member of 3G Fund Partners, Ltd. (&quot;3G Fund&quot;), which is the general partner of 3G Fund (3G Fund together with 3G Capital Ltd. and 3G Capital L.P., &quot;3G Capital&quot;). Mr. Behring is the Managing Director of 3G Capital Ltd. and is therefore in a position to determine the investment and voting decisions made by 3G Fund. Mr. Behring disclaims beneficial ownership of any and all securities held by 3G Fund except to the extent of his pecuniary interest in 3G Fund.  This report shall not be deemed an admission that Mr. Behring is the beneficial owner of any securities held by 3G Fund for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, or for any other purpose.</footnote>
        <footnote id="F2">3G Fund closed out of its position in the securities of CSX Corporation through the transactions disclosed in this report.</footnote>
        <footnote id="F4">Open market trade.</footnote>
    </footnotes>

    <remarks>Two of three filings. Footnote (3) &quot;Block trade with J.P. Morgan Securities LLC.&quot; omitted, as it is not referenced.</remarks>

    <ownerSignature>
        <signatureName>/s/ Alexandre Behring</signatureName>
        <signatureDate>2010-11-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
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