X0202 4 2007-05-02 0000789019 MICROSOFT CORP MSFT 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 0 0 0 Common Stock 2007-05-02 4 S 0 2979 30.67 D 914496357 D Common Stock 2007-05-02 4 S 0 34900 30.66 D 914461457 D Common Stock 2007-05-02 4 S 0 3500 30.65 D 914457957 D Common Stock 2007-05-02 4 S 0 36100 30.64 D 914421857 D Common Stock 2007-05-02 4 S 0 56900 30.63 D 914364957 D Common Stock 2007-05-02 4 S 0 53600 30.62 D 914311357 D Common Stock 2007-05-02 4 S 0 44300 30.61 D 914267057 D Common Stock 2007-05-02 4 S 0 104821 30.60 D 914162236 D Common Stock 2007-05-02 4 S 0 116100 30.59 D 914046136 D Common Stock 2007-05-02 4 S 0 94854 30.58 D 913951282 D Common Stock 2007-05-02 4 S 0 124748 30.57 D 913826534 D Common Stock 2007-05-02 4 S 0 70415 30.56 D 913756119 D Common Stock 2007-05-02 4 S 0 75494 30.55 D 913680625 D Common Stock 2007-05-02 4 S 0 29700 30.54 D 913650925 D Common Stock 2007-05-02 4 S 0 2400 30.53 D 913648525 D Common Stock 2007-05-02 4 S 0 24600 30.52 D 913623925 D Common Stock 2007-05-02 4 S 0 37089 30.51 D 913586836 D Common Stock 2007-05-02 4 S 0 42100 30.50 D 913544736 D Common Stock 2007-05-02 4 S 0 19900 30.49 D 913524836 D Common Stock 2007-05-02 4 S 0 26300 30.48 D 913498536 D Common Stock 2007-05-02 4 S 0 72140 30.47 D 913426396 D Common Stock 2007-05-02 4 S 0 122384 30.46 D 913304012 D Common Stock 2007-05-02 4 S 0 229800 30.45 D 913074212 D Common Stock 2007-05-02 4 S 0 159000 30.44 D 912915212 D Common Stock 2007-05-02 4 S 0 118500 30.43 D 912796712 D Common Stock 2007-05-02 4 S 0 105286 30.42 D 912691426 D Common Stock 2007-05-02 4 S 0 64000 30.41 D 912627426 D Common Stock 2007-05-02 4 S 0 42400 30.40 D 912585026 D Common Stock 2007-05-02 4 S 0 13100 30.39 D 912571926 D Common Stock 2007-05-02 4 S 0 23000 30.38 D 912548926 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 2007-05-04