X0201 42003-11-0300000799089ASCENTIAL SOFTWARE CORP ASCL0001184792GYENES PETERC/O 50 WASHINGTON STREETWESTBOROUGHMA015811100Chief Executive OfficerCommon Stock2003-11-034M05000011.432A65990DCommon Stock2003-11-034M05000011.432A65990DCommon Stock2003-11-034S05000023.0012D65990DCommon Stock2003-11-034S05000023.50D65990DCommon Stock (right to buy)11.4322003-11-034M05000011.432D2000-03-012008-02-25Common Stock50000148036DCommon Stock (right to buy)11.4322003-11-034M05000011.432D2000-03-012008-02-25Common Stock50000148036DFollowing all of the transactions reported on this Form 4, the reporting person holds 65,990 shares directly.Following all of the transactions reported on this Form 4, 148,036 shares underlying this option have not yet been exercised./s/ Scott N. Semel, by power of attorney2003-11-05