X0202 4 2007-05-01 0000789019 MICROSOFT CORP MSFT 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 0 0 0 Common Stock 2007-05-01 4 S 0 12500 30.41 D 917486836 D Common Stock 2007-05-01 4 S 0 126463 30.40 D 917360373 D Common Stock 2007-05-01 4 S 0 55800 30.38 D 917304573 D Common Stock 2007-05-01 4 S 0 79737 30.37 D 917224836 D Common Stock 2007-05-01 4 S 0 126715 30.36 D 917098121 D Common Stock 2007-05-01 4 S 0 433167 30.35 D 916664954 D Common Stock 2007-05-01 4 S 0 103918 30.34 D 916561036 D Common Stock 2007-05-01 4 S 0 30600 30.33 D 916530436 D Common Stock 2007-05-01 4 S 0 41589 30.32 D 916488847 D Common Stock 2007-05-01 4 S 0 56758 30.31 D 916432089 D Common Stock 2007-05-01 4 S 0 277066 30.30 D 916155023 D Common Stock 2007-05-01 4 S 0 111853 30.29 D 916043170 D Common Stock 2007-05-01 4 S 0 75900 30.28 D 915967270 D Common Stock 2007-05-01 4 S 0 27600 30.27 D 915939670 D Common Stock 2007-05-01 4 S 0 380307 30.26 D 915559363 D Common Stock 2007-05-01 4 S 0 237827 30.25 D 915321536 D Common Stock 2007-05-01 4 S 0 233684 30.24 D 915087852 D Common Stock 2007-05-01 4 S 0 64216 30.23 D 915023636 D Common Stock 2007-05-01 4 S 0 28900 30.22 D 914994736 D Common Stock 2007-05-01 4 S 0 95536 30.21 D 914899200 D Common Stock 2007-05-01 4 S 0 166596 30.20 D 914732604 D Common Stock 2007-05-01 4 S 0 60168 30.19 D 914672436 D Common Stock 2007-05-01 4 S 0 20500 30.18 D 914651936 D Common Stock 2007-05-01 4 S 0 42700 30.17 D 914609236 D Common Stock 2007-05-01 4 S 0 28900 30.16 D 914580336 D Common Stock 2007-05-01 4 S 0 22100 30.15 D 914558236 D Common Stock 2007-05-01 4 S 0 37300 30.13 D 914520936 D Common Stock 2007-05-01 4 S 0 13000 30.12 D 914507936 D Common Stock 2007-05-01 4 S 0 8600 30.09 D 914499336 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 2007-05-03