X0202 4 2006-11-07 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 MICROSTRATEGY INCORPORATED 1861 INTERNATIONAL DRIVE MCLEAN VA 22102 0 0 1 0 Class A Common Stock 2006-11-07 4 C 0 58584 A 58584 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 118.70 D 58484 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 118.75 D 58384 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 600 118.76 D 57784 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 200 118.77 D 57584 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 118.83 D 57484 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 300 118.88 D 57184 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 600 118.89 D 56584 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 1141 119.00 D 55443 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 400 119.01 D 55043 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 1459 119.10 D 53584 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.20 D 53484 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 200 119.23 D 53284 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.24 D 53184 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.25 D 53084 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 500 119.26 D 52584 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 584 119.30 D 52000 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 300 119.33 D 51700 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.34 D 51600 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.36 D 51500 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.37 D 51400 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 2100 119.42 D 49300 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 200 119.43 D 49100 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 500 119.47 D 48600 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 300 119.48 D 48300 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 200 119.50 D 48100 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.51 D 48000 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 100 119.52 D 47900 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 600 119.60 D 47300 I Shares Owned by LLC Class A Common Stock 2006-11-07 4 S 0 200 119.61 D 47100 I Shares Owned by LLC Class B Common Stock 2006-11-07 4 C 0 58584 D Class A Common Stock 58584 2619345 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. 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 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. 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. 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. Michael J. Saylor, Individually and as the Sole Member of Alcantara LLC 2006-11-09