0001127602-15-013498.txt : 20150402 0001127602-15-013498.hdr.sgml : 20150402 20150402160609 ACCESSION NUMBER: 0001127602-15-013498 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20150331 FILED AS OF DATE: 20150402 DATE AS OF CHANGE: 20150402 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: 200 WHEELER ROAD CITY: BURLINGTON STATE: MA ZIP: 01803 BUSINESS PHONE: 6179491000 MAIL ADDRESS: STREET 1: 200 WHEELER ROAD CITY: BURLINGTON STATE: MA ZIP: 01803 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: KOTZABASAKIS MANOLIS E CENTRAL INDEX KEY: 0001251378 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34630 FILM NUMBER: 15747519 4 1 form4.xml PRIMARY DOCUMENT X0306 4 2015-03-31 0000929940 ASPEN TECHNOLOGY INC /DE/ AZPN 0001251378 KOTZABASAKIS MANOLIS E C/O ASPEN TECHNOLOGY, INC. 20 CROSBY DRIVE BEDFORD MA 01730 1 CTO and Executive VP of R&D Common Stock 2015-03-31 4 F 0 2657 38.69 D 87633 D Shares withheld by Registrant to satisfy statutory tax withholding requirements on vesting of restricted stock units and distribution of stock. /s/ F.G. Hammond, attorney-in-fact for Mr. Kotzabasakis 2015-04-02