X0202 4 2006-08-01 0000789019 MICROSOFT CORP MSFT 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 1 0 0 Chairman of the Board Common Stock 2006-08-01 4 S 0 25000 24.18 D 970474336 D Common Stock 2006-08-01 4 S 0 25000 24.16 D 970449336 D Common Stock 2006-08-01 4 S 0 53400 24.14 D 970395936 D Common Stock 2006-08-01 4 S 0 49815 24.13 D 970346121 D Common Stock 2006-08-01 4 S 0 29600 24.12 D 970316521 D Common Stock 2006-08-01 4 S 0 8700 24.11 D 970307821 D Common Stock 2006-08-01 4 S 0 16257 24.10 D 970291564 D Common Stock 2006-08-01 4 S 0 26385 24.09 D 970265179 D Common Stock 2006-08-01 4 S 0 136500 24.08 D 970128679 D Common Stock 2006-08-01 4 S 0 134043 24.07 D 969994636 D Common Stock 2006-08-01 4 S 0 139700 24.06 D 969854936 D Common Stock 2006-08-01 4 S 0 115600 24.05 D 969739336 D Common Stock 2006-08-01 4 S 0 29200 24.04 D 969710136 D Common Stock 2006-08-01 4 S 0 99468 24.03 D 969610668 D Common Stock 2006-08-01 4 S 0 103672 24.02 D 969506996 D Common Stock 2006-08-01 4 S 0 84628 24.01 D 969422368 D Common Stock 2006-08-01 4 S 0 142300 24.00 D 969280068 D Common Stock 2006-08-01 4 S 0 160232 23.99 D 969119836 D Common Stock 2006-08-01 4 S 0 83200 23.98 D 969036636 D Common Stock 2006-08-01 4 S 0 61600 23.97 D 968975036 D Common Stock 2006-08-01 4 S 0 73200 23.96 D 968901836 D Common Stock 2006-08-01 4 S 0 86429 23.95 D 968815407 D Common Stock 2006-08-01 4 S 0 50471 23.94 D 968764936 D Common Stock 2006-08-01 4 S 0 57800 23.93 D 968707136 D Common Stock 2006-08-01 4 S 0 86000 23.92 D 968621136 D Common Stock 2006-08-01 4 S 0 48300 23.91 D 968572836 D Common Stock 2006-08-01 4 S 0 56500 23.90 D 968516336 D Common Stock 2006-08-01 4 S 0 7000 23.89 D 968509336 D Common Stock 2006-08-01 4 S 0 10000 23.88 D 968499336 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 purpose 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 2006-08-03