Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
SAYLOR MICHAEL J
   2. Issuer Name and Ticker or Trading Symbol
MICROSTRATEGY INC [MSTR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chairman, President and CEO
(Last)
(First)
(Middle)
C/O MICROSTRATEGY INCORPORATED, 1861 INTERNATIONAL DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
11/07/2006
(Street)

MCLEAN, VA 22102		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 11/07/2006   C   58,584 A (1) 58,584 I Shares Owned by LLC (2)
Class A Common Stock 11/07/2006   S   100 D $ 118.7 58,484 (3) I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 118.75 58,384 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   600 D $ 118.76 57,784 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   200 D $ 118.77 57,584 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 118.83 57,484 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   300 D $ 118.88 57,184 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   600 D $ 118.89 56,584 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   1,141 D $ 119 55,443 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   400 D $ 119.01 55,043 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   1,459 D $ 119.1 53,584 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.2 53,484 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   200 D $ 119.23 53,284 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.24 53,184 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.25 53,084 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   500 D $ 119.26 52,584 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   584 D $ 119.3 52,000 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   300 D $ 119.33 51,700 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.34 51,600 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.36 51,500 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.37 51,400 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   2,100 D $ 119.42 49,300 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   200 D $ 119.43 49,100 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   500 D $ 119.47 48,600 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   300 D $ 119.48 48,300 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   200 D $ 119.5 48,100 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.51 48,000 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   100 D $ 119.52 47,900 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   600 D $ 119.6 47,300 I Shares Owned by LLC
Class A Common Stock 11/07/2006   S   200 D $ 119.61 47,100 I Shares Owned by LLC

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Class B Common Stock (4) 11/07/2006   C     58,584   (4)   (4) Class A Common Stock 58,584 (4) 2,619,345 (5) I Shares owned by LLC

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SAYLOR MICHAEL J
C/O MICROSTRATEGY INCORPORATED
1861 INTERNATIONAL DRIVE
MCLEAN, VA 22102		   X   X   Chairman, President and CEO  
ALCANTARA LLC
C/O MICROSTRATEGY INCORPORATED
1861 INTERNATIONAL DRIVE
MCLEAN, VA 22102		     X    

Signatures

 Michael J. Saylor, Individually and as the Sole Member of Alcantara LLC   11/09/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These shares were acquired upon conversion of shares of Class B Common Stock, which were convertible on a 1-for-1 basis into shares of Class A Common Stock.
(2) Shares that are indicated as being "owned by LLC" are owned directly by Alcantara LLC (the "LLC"), and indirectly by Mr. Saylor as the sole member of the LLC. The LLC's address is the same as Mr. Saylor's address. The LLC has designated Mr. Saylor as the designated filer. Mr. Saylor is an officer, director and ten percent owner of the issuer.
(3) Separate open market sale transactions that were executed on 11/07/2006 at the same price have been reported on an aggregate basis on a single line in Table I. The order in which sale transactions are set forth in Table I is not necessarily reflective of the sequence in which the sale transactions occurred in fact.
(4) Shares of Class B Common Stock are convertible immediately upon receipt into shares of Class A Common Stock on a 1-for-1 basis and have no expiration date.
(5) See Exhibit A.
 
Remarks:
This is the first Form 4 of four Form 4 filings made by the reporting person to report transactions that occurred on November 7, 2006.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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