<SEC-DOCUMENT>0001209191-18-035210.txt : 20180604
<SEC-HEADER>0001209191-18-035210.hdr.sgml : 20180604
<ACCEPTANCE-DATETIME>20180604170126
ACCESSION NUMBER:		0001209191-18-035210
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180531
FILED AS OF DATE:		20180604
DATE AS OF CHANGE:		20180604

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			RECHAN LESLIE J
		CENTRAL INDEX KEY:			0001333062

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24435
		FILM NUMBER:		18878898

	MAIL ADDRESS:	
		STREET 1:		2207 BRIDGEPOINTE PARKWAY
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94404

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MICROSTRATEGY INC
		CENTRAL INDEX KEY:			0001050446
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				510323571
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1850 TOWERS CRESCENT PLAZA
		CITY:			TYSONS CORNER
		STATE:			VA
		ZIP:			22182
		BUSINESS PHONE:		7038488600

	MAIL ADDRESS:	
		STREET 1:		1850 TOWERS CRESCENT PLAZA
		CITY:			TYSONS CORNER
		STATE:			VA
		ZIP:			22182
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-05-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001050446</issuerCik>
        <issuerName>MICROSTRATEGY INC</issuerName>
        <issuerTradingSymbol>MSTR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001333062</rptOwnerCik>
            <rptOwnerName>RECHAN LESLIE J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MICROSTRATEGY INCORPORATED</rptOwnerStreet1>
            <rptOwnerStreet2>1850 TOWERS CRESCENT PLAZA</rptOwnerStreet2>
            <rptOwnerCity>TYSONS CORNER</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22182</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Director Stock Option (Right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>129.57</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-05-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-05-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This option is scheduled to vest as to 1,250 shares on the first anniversary of the grant date, and as to an additional 1,250 shares on each anniversary thereafter until the option is vested in full. This option was granted pursuant to Amendment No. 2 to the MicroStrategy Incorporated 2013 Stock Incentive Plan (&quot;Amendment No. 2&quot;). Amendment No. 2 provides for the annual automatic grant of a stock option to purchase 5,000 shares of Class A common stock to each non-employee director on May 31 of each year, beginning in 2015. Amendment No. 2 was approved by the stockholders of MicroStrategy Incorporated at the 2015 annual meeting.</footnote>
        <footnote id="F2">See Exhibit A.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ W. Ming Shao, Attorney-in-Fact</signatureName>
        <signatureDate>2018-06-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>attachment1.htm
<DESCRIPTION>EX-99 DOCUMENT
<TEXT>
<HTML>
<HEAD>
</HEAD>
<BODY>
<PRE>
Exhibit A:

Mr. Rechan also directly owns a director stock option to purchase 15,000 shares
of Class A common stock with (i) an exercise price of $127.46 per share and (ii)
an expiration date of April 30, 2028. Of the 15,000 shares subject to this
option, 3,750 shares are scheduled to vest on April 30, 2019, 3,750 shares are
scheduled to vest on April 30, 2020, 3,750 shares are scheduled to vest on April
30, 2021, and 3,750 shares are scheduled to vest on April 30, 2022.
</PRE>
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</SEC-DOCUMENT>
