X0101 42003-05-28 0000789019 MICROSOFT CORP MSFT 0000902015 BALLMER STEVEN A 1100Chief Executive OfficerCommon Stock2003-05-284S05000024.38D421469622DCommon Stock2003-05-284S02591424.45D421443708DCommon Stock2003-05-284S05080024.47D421392908DCommon Stock2003-05-284S0290024.49D421390008DCommon Stock2003-05-284S0379724.51D421386211DCommon Stock2003-05-284S03390024.52D421352311DCommon Stock2003-05-284S05804424.53D421294267DCommon Stock2003-05-284S020103224.54D421093235DCommon Stock2003-05-284S02359624.55D421069639DCommon Stock2003-05-284S020439124.56D420865248DCommon Stock2003-05-284S05484724.57D420810401DCommon Stock2003-05-284S07969324.58D420730708DCommon Stock2003-05-284S06263524.59D420668073DCommon Stock2003-05-284S07485024.6D420593223DCommon Stock2003-05-284S05610024.61D420537123DCommon Stock2003-05-284S0587424.62D420531249DCommon Stock2003-05-284S02944824.63D420501801DCommon Stock2003-05-284S03095424.64D420470847DCommon Stock2003-05-284S0590024.65D420464947DCommon Stock2003-05-284S0280524.66D420462142DCommon Stock2003-05-284S0927224.67D420452870DCommon Stock2003-05-284S03210024.68D420420770DCommon Stock2003-05-284S01633724.69D420404433DCommon Stock2003-05-284S01571724.7D420388716DCommon Stock2003-05-284S01650024.71D420372216DCommon Stock2003-05-284S03574524.72D420336471DCommon Stock2003-05-284S0833124.73D420328140DThis sale was effected pursuant to a 10b5-1 sales plan adopted by the reporting person.This Form 4 is the first of two forms to report all May 28, 2003 transactions for the reporting person.John A. Seethoff, Attorney-in-Fact for Steven A. Ballmer2003-05-29