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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000749647-11-000017.txt : 20110119
<SEC-HEADER>0000749647-11-000017.hdr.sgml : 20110119
<ACCEPTANCE-DATETIME>20110119162032
ACCESSION NUMBER:		0000749647-11-000017
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110114
FILED AS OF DATE:		20110119
DATE AS OF CHANGE:		20110119

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHURCH JEFFREY WAYNE
		CENTRAL INDEX KEY:			0001240203

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15911
		FILM NUMBER:		11536026

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Celsion CORP
		CENTRAL INDEX KEY:			0000749647
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				521256615
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10220 OLD COLUMBIA ROAD
		STREET 2:		SUITE L
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046-1705
		BUSINESS PHONE:		4102905390

	MAIL ADDRESS:	
		STREET 1:		10220 OLD COLUMBIA ROAD
		STREET 2:		SUITE L
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CELSION CORP
		DATE OF NAME CHANGE:	19980515

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CHEUNG LABORATORIES INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-01-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000749647</issuerCik>
        <issuerName>Celsion CORP</issuerName>
        <issuerTradingSymbol>CLSN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001240203</rptOwnerCik>
            <rptOwnerName>CHURCH JEFFREY WAYNE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CELSION COPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>10224-L OLD COLUMBIA ROAD</rptOwnerStreet2>
            <rptOwnerCity>COLUMBIA</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21046</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Series A Redeemable Convertible Preferred Stock</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.4</value>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2011-01-14</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1197.795</value>
                    <footnoteId id="F6"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-01-14</value>
            </exerciseDate>
            <expirationDate>
                <value>2013-01-14</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Celsion Corporation Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3333.33</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrants to Purchase Common Stock</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.25</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2011-01-14</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3333.3328</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-07-14</value>
            </exerciseDate>
            <expirationDate>
                <value>2016-07-14</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Celsion Corporation Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3333.3328</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3333.3328</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents the date which the NASDAQ Stock Market LLC approved the participation of insiders in the public offering in which the securities were purchased by the reporting person and the date on which the reporting person became irrevocably committed to purchase the securities covered by this report.</footnote>
        <footnote id="F2">The securities were purchased in a public offering pursuant to Celsion Corporation's Registration Statement on Form S-3 (File No. 333-158402) that was declared effective on April 17, 2009 (the &quot;Registration Statement&quot;) on the terms and conditions set forth in the prospectus supplements to the Registration Statement dated January 12, 2011 and January 13, 2011.</footnote>
        <footnote id="F3">Represents the conversion price per share of the Series A Convertible Preferred Stock.</footnote>
        <footnote id="F4">Represents the exercise price of the warrants per whole share of common stock.</footnote>
        <footnote id="F5">Each unit of a warrant to purchase 416.6666 shares of common stock was purchased for $0.125 per unit, which represents the value allocated to the unit in accordance with the NASDAQ Stock Market Rules.</footnote>
        <footnote id="F6">Represents the at-the-market purchase price per share of Series A Convertible Preferred Stock allocated to each such share in accordance with the NASDAQ Stock Market Rules.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Timothy J Tumminello, Controller &amp; CAO</signatureName>
        <signatureDate>2011-01-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
