<SEC-DOCUMENT>0001127602-19-027995-index.html : 20190905 <SEC-HEADER>0001127602-19-027995.hdr.sgml : 20190905 <ACCEPTANCE-DATETIME>20190905163732 ACCESSION NUMBER: 0001127602-19-027995 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20190903 FILED AS OF DATE: 20190905 DATE AS OF CHANGE: 20190905 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CASEY DONALD P CENTRAL INDEX KEY: 0001193372 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34630 FILM NUMBER: 191077571 MAIL ADDRESS: STREET 1: 1310 RIDDER PARK DR CITY: SAN JOSE STATE: CA ZIP: 95131-2313 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: ASPEN TECHNOLOGY INC /DE/ CENTRAL INDEX KEY: 0000929940 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-COMPUTER PROGRAMMING SERVICES [7371] IRS NUMBER: 042739697 STATE OF INCORPORATION: DE FISCAL YEAR END: 0630 BUSINESS ADDRESS: STREET 1: 20 CROSBY DRIVE CITY: BEDFORD STATE: MA ZIP: 01730 BUSINESS PHONE: 781-221-4302 MAIL ADDRESS: STREET 1: 20 CROSBY DRIVE CITY: BEDFORD STATE: MA ZIP: 01730 </SEC-HEADER> <DOCUMENT> <TYPE>4 <SEQUENCE>1 <FILENAME>form4.xml <DESCRIPTION>PRIMARY DOCUMENT <TEXT> Document 1 - file: form4.html
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