<SEC-DOCUMENT>0001193125-18-122676-index.html : 20180419
<SEC-HEADER>0001193125-18-122676.hdr.sgml : 20180419
<ACCEPTANCE-DATETIME>20180419162405
ACCESSION NUMBER:		0001193125-18-122676
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20180419
DATE AS OF CHANGE:		20180419
EFFECTIVENESS DATE:		20180419

FILER:

	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

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24435
		FILM NUMBER:		18764027

	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>DEFA14A
<SEQUENCE>1
<FILENAME>d566402ddefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: d566402ddefa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g566402img1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g566402img1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g566402img2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g566402img2.jpg

</DOCUMENT>
</SEC-DOCUMENT>