<SEC-DOCUMENT>0001209191-12-034513.txt : 20120619
<SEC-HEADER>0001209191-12-034513.hdr.sgml : 20120619
<ACCEPTANCE-DATETIME>20120619161732
ACCESSION NUMBER:		0001209191-12-034513
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120619
FILED AS OF DATE:		20120619
DATE AS OF CHANGE:		20120619

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PERELMAN RONALD O
		CENTRAL INDEX KEY:			0001186472

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23047
		FILM NUMBER:		12915234

	MAIL ADDRESS:	
		STREET 1:		35 EAST 62ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10021

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIGA TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0001010086
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				133864870
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		35 EAST 62ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10065
		BUSINESS PHONE:		212-672-9100

	MAIL ADDRESS:	
		STREET 1:		35 EAST 62ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10065

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SIGA PHARMACEUTICALS INC
		DATE OF NAME CHANGE:	19961108

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MacAndrews & Forbes LLC
		CENTRAL INDEX KEY:			0000740740
		STANDARD INDUSTRIAL CLASSIFICATION:	PERFUMES, COSMETICS & OTHER TOILET PREPARATIONS [2844]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23047
		FILM NUMBER:		12915233

	BUSINESS ADDRESS:	
		STREET 1:		36 EAST 63RD ST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10021
		BUSINESS PHONE:		2126889000

	MAIL ADDRESS:	
		STREET 1:		MACANDREW & FORBES HOLDINGS INC
		STREET 2:		35 EAST 62ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10021

	FORMER NAME:	
		FORMER CONFORMED NAME:	MacAndrews & Forbes Inc.
		DATE OF NAME CHANGE:	20050201

	FORMER NAME:	
		FORMER CONFORMED NAME:	MACANDREWS & FORBES HOLDINGS INC
		DATE OF NAME CHANGE:	19840217

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MacAndrews & Forbes Holdings Inc.
		CENTRAL INDEX KEY:			0000918939
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23047
		FILM NUMBER:		12915235

	BUSINESS ADDRESS:	
		STREET 1:		38 EAST 63RD STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10021
		BUSINESS PHONE:		2125728600

	MAIL ADDRESS:	
		STREET 1:		38 EAST 63RD STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10021

	FORMER NAME:	
		FORMER CONFORMED NAME:	MAFCO HOLDINGS INC
		DATE OF NAME CHANGE:	19940210
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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<ownershipDocument>

    <schemaVersion>X0305</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-06-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001010086</issuerCik>
        <issuerName>SIGA TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>SIGA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000918939</rptOwnerCik>
            <rptOwnerName>MacAndrews &amp; Forbes Holdings Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>35 EAST 62ND STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10065</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001186472</rptOwnerCik>
            <rptOwnerName>PERELMAN RONALD O</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>35 EAST 62ND STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10065</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000740740</rptOwnerCik>
            <rptOwnerName>MacAndrews &amp; Forbes LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>35 EAST 62ND STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10065</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrant (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.95</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2012-06-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>247272</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-06-19</value>
            </exerciseDate>
            <expirationDate>
                <value>2012-06-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>247272</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Owned through wholly-owned corporation</value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrant (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.95</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2012-06-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>247272</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-06-19</value>
            </exerciseDate>
            <expirationDate>
                <value>2014-06-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>247272</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>247272</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Owned through wholly-owned corporation</value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These warrants to purchase shares of the common stock (&quot;Common Stock&quot;) of SIGA Technologies, Inc. (&quot;SIGA&quot;) were acquired by MacAndrews &amp; Forbes LLC on June 19, 2008 pursuant to a Letter Agreement, by and between SIGA and MacAndrews &amp; Forbes LLC. These warrants were previously reported at the time of acquisition as the right to buy 238,000 shares of Common Stock at an exercise price of $3.06 per share, but, pursuant to the anti-dilution provisions of the warrants, were adjusted to reflect the effects of certain of SIGA's subsequent issuances.</footnote>
        <footnote id="F2">On June 19, 2012, the term of a Warrant Agreement with MacAndrews &amp; Forbes LLC, covering 247,272 shares and initially issued in 2008, was extended to June 19, 2014.</footnote>
    </footnotes>

    <remarks>Ronald O. Perelman, a joint filer hereunder, beneficially owns 100% of the common stock of MacAndrews &amp; Forbes Holdings Inc., which beneficially owns 100% of the equity interests of MacAndrews &amp; Forbes LLC, a joint filer hereunder. MacAndrews &amp; Forbes LLC beneficially owns the securities described above.</remarks>

    <ownerSignature>
        <signatureName>/s/ Barry F. Schwartz, Executive Vice Chairman</signatureName>
        <signatureDate>2012-06-19</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Barry F. Schwartz for Ronald O. Perelman pursuant to a Power of Attorney filed with the Securities and Exchange Commission</signatureName>
        <signatureDate>2012-06-19</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Barry F. Schwartz, Executive Vice Chairman</signatureName>
        <signatureDate>2012-06-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
