X0202 4 2007-05-09 0000789019 MICROSOFT CORP MSFT 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 0 0 0 Common Stock 2007-05-09 4 S 0 100000 30.90 D 900399336 D Common Stock 2007-05-09 4 S 0 150000 30.86 D 900249336 D Common Stock 2007-05-09 4 S 0 50000 30.85 D 900199336 D Common Stock 2007-05-09 4 S 0 100000 30.84 D 900099336 D Common Stock 2007-05-09 4 S 0 317891 30.83 D 899781445 D Common Stock 2007-05-09 4 S 0 185109 30.82 D 899596336 D Common Stock 2007-05-09 4 S 0 106097 30.81 D 899490239 D Common Stock 2007-05-09 4 S 0 130777 30.80 D 899359462 D Common Stock 2007-05-09 4 S 0 384405 30.79 D 898975057 D Common Stock 2007-05-09 4 S 0 136281 30.78 D 898838776 D Common Stock 2007-05-09 4 S 0 257276 30.77 D 898581500 D Common Stock 2007-05-09 4 S 0 155000 30.76 D 898426500 D Common Stock 2007-05-09 4 S 0 283464 30.75 D 898143036 D Common Stock 2007-05-09 4 S 0 76147 30.74 D 898066889 D Common Stock 2007-05-09 4 S 0 115668 30.73 D 897951221 D Common Stock 2007-05-09 4 S 0 71555 30.72 D 897879666 D Common Stock 2007-05-09 4 S 0 73563 30.71 D 897806103 D Common Stock 2007-05-09 4 S 0 143767 30.70 D 897662336 D Common Stock 2007-05-09 4 S 0 10200 30.66 D 897652136 D Common Stock 2007-05-09 4 S 0 20700 30.64 D 897631436 D Common Stock 2007-05-09 4 S 0 69100 30.63 D 897562336 D Common Stock 2007-05-09 4 S 0 20700 30.62 D 897541636 D Common Stock 2007-05-09 4 S 0 23636 30.61 D 897518000 D Common Stock 2007-05-09 4 S 0 13664 30.60 D 897504336 D Common Stock 2007-05-09 4 S 0 5000 30.58 D 897499336 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 2007-05-11