X0202 4 2007-02-21 0000789019 MICROSOFT CORP MSFT 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 0 0 0 Common Stock 2007-02-21 4 S 0 20000 29.36 D 925479336 D Common Stock 2007-02-21 4 S 0 95000 29.35 D 925384336 D Common Stock 2007-02-21 4 S 0 25000 29.33 D 925359336 D Common Stock 2007-02-21 4 S 0 20000 29.32 D 925339336 D Common Stock 2007-02-21 4 S 0 70000 29.30 D 925269336 D Common Stock 2007-02-21 4 S 0 70000 29.28 D 925199336 D Common Stock 2007-02-21 4 S 0 35000 29.27 D 925164336 D Common Stock 2007-02-21 4 S 0 25000 29.25 D 925139336 D Common Stock 2007-02-21 4 S 0 50000 29.24 D 925089336 D Common Stock 2007-02-21 4 S 0 100000 29.23 D 924989336 D Common Stock 2007-02-21 4 S 0 115000 29.22 D 924874336 D Common Stock 2007-02-21 4 S 0 65000 29.20 D 924809336 D Common Stock 2007-02-21 4 S 0 15000 29.19 D 924794336 D Common Stock 2007-02-21 4 S 0 25000 29.18 D 924769336 D Common Stock 2007-02-21 4 S 0 123393 29.17 D 924645943 D Common Stock 2007-02-21 4 S 0 110794 29.16 D 924535149 D Common Stock 2007-02-21 4 S 0 202677 29.15 D 924332472 D Common Stock 2007-02-21 4 S 0 80700 29.14 D 924251772 D Common Stock 2007-02-21 4 S 0 52335 29.13 D 924199437 D Common Stock 2007-02-21 4 S 0 53518 29.12 D 924145919 D Common Stock 2007-02-21 4 S 0 63122 29.11 D 924082797 D Common Stock 2007-02-21 4 S 0 59266 29.10 D 924023531 D Common Stock 2007-02-21 4 S 0 10000 29.09 D 924013531 D Common Stock 2007-02-21 4 S 0 50000 29.08 D 923963531 D Common Stock 2007-02-21 4 S 0 44195 29.07 D 923919336 D Common Stock 2007-02-21 4 S 0 1451 29.05 D 923917885 D Common Stock 2007-02-21 4 S 0 20000 29.04 D 923897885 D Common Stock 2007-02-21 4 S 0 20000 29.02 D 923877885 D Common Stock 2007-02-21 4 S 0 18549 29.01 D 923859336 D Common Stock 2007-02-21 4 S 0 60000 29.00 D 923799336 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 2007-02-23