X0202 4 2006-08-04 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 2006-08-04 4 S 0 2800 24.49 D 963496536 D Common Stock 2006-08-04 4 S 0 39600 24.48 D 963456936 D Common Stock 2006-08-04 4 S 0 100689 24.47 D 963356247 D Common Stock 2006-08-04 4 S 0 38903 24.46 D 963317344 D Common Stock 2006-08-04 4 S 0 93011 24.45 D 963224333 D Common Stock 2006-08-04 4 S 0 41600 24.44 D 963182733 D Common Stock 2006-08-04 4 S 0 28897 24.43 D 963153836 D Common Stock 2006-08-04 4 S 0 20672 24.42 D 963133164 D Common Stock 2006-08-04 4 S 0 24677 24.41 D 963108487 D Common Stock 2006-08-04 4 S 0 127320 24.40 D 962981167 D Common Stock 2006-08-04 4 S 0 112444 24.39 D 962868723 D Common Stock 2006-08-04 4 S 0 173774 24.38 D 962694949 D Common Stock 2006-08-04 4 S 0 88400 24.37 D 962606549 D Common Stock 2006-08-04 4 S 0 47013 24.36 D 962559536 D Common Stock 2006-08-04 4 S 0 25700 24.35 D 962533836 D Common Stock 2006-08-04 4 S 0 22300 24.34 D 962511536 D Common Stock 2006-08-04 4 S 0 11200 24.33 D 962500336 D Common Stock 2006-08-04 4 S 0 9300 24.32 D 962491036 D Common Stock 2006-08-04 4 S 0 9200 24.31 D 962481836 D Common Stock 2006-08-04 4 S 0 34700 24.30 D 962447136 D Common Stock 2006-08-04 4 S 0 42564 24.29 D 962404572 D Common Stock 2006-08-04 4 S 0 84400 24.28 D 962320172 D Common Stock 2006-08-04 4 S 0 78796 24.27 D 962241376 D Common Stock 2006-08-04 4 S 0 105760 24.26 D 962135616 D Common Stock 2006-08-04 4 S 0 82573 24.25 D 962053043 D Common Stock 2006-08-04 4 S 0 72400 24.24 D 961980643 D Common Stock 2006-08-04 4 S 0 127563 24.23 D 961853080 D Common Stock 2006-08-04 4 S 0 141544 24.22 D 961711536 D Common Stock 2006-08-04 4 S 0 83900 24.21 D 961627636 D Common Stock 2006-08-04 4 S 0 43500 24.20 D 961584136 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 2006-08-08