X0303 4 2009-12-04 0001050446 MICROSTRATEGY INC MSTR 0001079782 SAYLOR MICHAEL J C/O MICROSTRATEGY INCORPORATED 1861 INTERNATIONAL DRIVE MCLEAN VA 22102 1 1 1 0 Chairman, President and CEO 0001269225 ALCANTARA LLC C/O MICHAEL J. SAYLOR 1861 INTERNATIONAL DRIVE MCLEAN VA 22102 0 0 1 0 Class A Common Stock 2009-12-07 4 C 0 11214 A 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 1000 89.75 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 497 89.80 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 251 89.81 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 1511 89.85 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 500 90.00 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 600 90.01 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 200 90.02 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 100 90.03 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 200 90.05 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 400 90.07 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 4914 90.10 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 86 90.11 D 0 I Shares owned by LLC Class A Common Stock 2009-12-04 4 S 0 955 90.20 D 0 I Shares owned by LLC Class B Common Stock 2009-12-07 4 C 0 11214 D Class A Common Stock 11214 2358700 I Shares owned by LLC 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. The reporting persons converted 11,214 shares of Class B Common Stock into 11,214 shares of Class A Common Stock on December 7, 2009 for the purpose of settling the sale transactions reported on this Form 4. Upon settlement of all of these sale transactions, the reporting persons will beneficially own 0 shares of Class A Common Stock. 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. Separate open market sale transactions that were executed on 12/04/2009 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. 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. See Exhibit A. /s/ Michael J. Saylor, Individually and as Sole Member of Alcantara LLC 2009-12-07