X0202 4 2006-08-08 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 2006-08-08 4 S 0 16454 24.340 D 958172424 D Common Stock 2006-08-08 4 S 0 8200 24.339 D 958164224 D Common Stock 2006-08-08 4 S 0 2800 24.337 D 958161424 D Common Stock 2006-08-08 4 S 0 50600 24.330 D 958110824 D Common Stock 2006-08-08 4 S 0 8700 24.328 D 958102124 D Common Stock 2006-08-08 4 S 0 58700 24.320 D 958043424 D Common Stock 2006-08-08 4 S 0 4800 24.315 D 958038624 D Common Stock 2006-08-08 4 S 0 21300 24.310 D 958017324 D Common Stock 2006-08-08 4 S 0 5300 24.303 D 958012024 D Common Stock 2006-08-08 4 S 0 2500 24.302 D 958009524 D Common Stock 2006-08-08 4 S 0 4900 24.301 D 958004624 D Common Stock 2006-08-08 4 S 0 7588 24.300 D 957997036 D Common Stock 2006-08-08 4 S 0 9000 24.295 D 957988036 D Common Stock 2006-08-08 4 S 0 6300 24.294 D 957981736 D Common Stock 2006-08-08 4 S 0 8000 24.293 D 957973736 D Common Stock 2006-08-08 4 S 0 2100 24.291 D 957971636 D Common Stock 2006-08-08 4 S 0 2100 24.290 D 957969536 D Common Stock 2006-08-08 4 S 0 4200 24.281 D 957965336 D Common Stock 2006-08-08 4 S 0 8000 24.280 D 957957336 D Common Stock 2006-08-08 4 S 0 24000 24.279 D 957933336 D Common Stock 2006-08-08 4 S 0 21600 24.274 D 957911736 D Common Stock 2006-08-08 4 S 0 10400 24.269 D 957901336 D Common Stock 2006-08-08 4 S 0 2000 24.230 D 957899336 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 2006-08-10