X0202 4 2007-02-23 0000789019 MICROSOFT CORP MSFT 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 0 0 0 Common Stock 2007-02-23 4 S 0 10000 29.26 D 922489336 D Common Stock 2007-02-23 4 S 0 20000 29.25 D 922469336 D Common Stock 2007-02-23 4 S 0 4300 29.20 D 922465036 D Common Stock 2007-02-23 4 S 0 7900 29.19 D 922457136 D Common Stock 2007-02-23 4 S 0 7800 29.18 D 922449336 D Common Stock 2007-02-23 4 S 0 10000 29.17 D 922439336 D Common Stock 2007-02-23 4 S 0 10000 29.14 D 922429336 D Common Stock 2007-02-23 4 S 0 50000 29.12 D 922379336 D Common Stock 2007-02-23 4 S 0 5429 29.10 D 922373907 D Common Stock 2007-02-23 4 S 0 39571 29.09 D 922334336 D Common Stock 2007-02-23 4 S 0 20000 29.08 D 922314336 D Common Stock 2007-02-23 4 S 0 40000 29.07 D 922274336 D Common Stock 2007-02-23 4 S 0 10000 29.06 D 922264336 D Common Stock 2007-02-23 4 S 0 10000 29.05 D 922254336 D Common Stock 2007-02-23 4 S 0 12100 29.04 D 922242236 D Common Stock 2007-02-23 4 S 0 47900 29.03 D 922194336 D Common Stock 2007-02-23 4 S 0 20000 29.02 D 922174336 D Common Stock 2007-02-23 4 S 0 40000 29.01 D 922134336 D Common Stock 2007-02-23 4 S 0 35000 29.00 D 922099336 D Common Stock 2007-02-23 4 S 0 45000 28.99 D 922054336 D Common Stock 2007-02-23 4 S 0 45000 28.98 D 922009336 D Common Stock 2007-02-23 4 S 0 118800 28.97 D 921890536 D Common Stock 2007-02-23 4 S 0 71200 28.96 D 921819336 D Common Stock 2007-02-23 4 S 0 60000 28.95 D 921759336 D Common Stock 2007-02-23 4 S 0 80000 28.94 D 921679336 D Common Stock 2007-02-23 4 S 0 20000 28.93 D 921659336 D Common Stock 2007-02-23 4 S 0 10000 28.92 D 921649336 D Common Stock 2007-02-23 4 S 0 80000 28.91 D 921569336 D Common Stock 2007-02-23 4 S 0 70000 28.90 D 921499336 D In addition, there are 425,066 shares owned by reporting person's spouse. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purposes. * Duly authorized under Special Power of Attorney appointing Michael Larson attorney-in-fact, dated February 3, 2006, by and on behalf of William H. Gates III, filed as Exhibit 99.1 to Cascade Investment, L.L.C.'s Amendment No. 2 to Schedule 13G with respect to Arch Capital Group Ltd. on March 7, 2006, SEC File No. 005-45257, and incorporated by reference herein. William H. Gates III By: /s/ Michael Larson*, Attorney-In-Fact 2007-02-27