X0101 42003-05-22 0000789019 MICROSOFT CORP MSFT 0000902015 BALLMER STEVEN A 1100Chief Executive OfficerCommon Stock2003-05-224S034920024.04D455918874DCommon Stock2003-05-224S044974124.05D455469133DCommon Stock2003-05-224S0133381224.06D454135321DCommon Stock2003-05-224S0124170424.07D452893617DCommon Stock2003-05-224S0138360624.08D451510011DCommon Stock2003-05-224S0137292924.09D450137082DCommon Stock2003-05-224S0432498524.1D445812097DCommon Stock2003-05-224S0279990524.11D443012192DCommon Stock2003-05-224S0167650124.12D441335691DCommon Stock2003-05-224S0232803024.13D439007661DCommon Stock2003-05-224S0127216724.14D437735494DCommon Stock2003-05-224S085495224.15D436880542DCommon Stock2003-05-224S0138404924.16D435496493DCommon Stock2003-05-224S0115329724.17D434343196DCommon Stock2003-05-224S0112857324.18D433214623DCommon Stock2003-05-224S044349324.19D432771130DCommon Stock2003-05-224S024112024.2D432530010DCommon Stock2003-05-224S057548324.21D431954527DCommon Stock2003-05-224S019923824.22D431755289DCommon Stock2003-05-224S04219424.23D431713095DCommon Stock2003-05-224S06607324.24D431647022DCommon Stock2003-05-224S02740024.25D431619622DThis sale was effected pursuant to a 10b5-1 sales plan adopted by the reporting person.John A. Seethoff, Attorney-in-Fact for Steven A. Ballmer2003-05-23