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Filing Detail
Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0000898432-03-000124
Filing Date
2003-02-11
Accepted
2003-02-11 12:11:02
Documents
1

Document Format Files

Seq Description Document Type Size
1 aspen-13g.txt SC 13G/A 7955
  Complete submission text file 0000898432-03-000124.txt   9946
Mailing Address 500 BOYLSTON STREET 15TH FLOOR BOSTON MA 02116
Business Address 500 BOYLSTON ST 15TH FL BOSTON MA 02116 18006372929
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (Filed by) CIK: 0000912938 (see all company filings)

State of Incorp.: MA | Fiscal Year End: 1231
SIC: 0000

Mailing Address TEN CANAL PARK CAMBRIDGE MA 02141
Business Address TEN CANAL PARK CAMBRIDGE MA 02141 6179491000
ASPEN TECHNOLOGY INC /DE/ (Subject) CIK: 0000929940 (see all company filings)

IRS No.: 042739697 | State of Incorp.: DE | Fiscal Year End: 0630
Type: SC 13G/A | Act: 34 | File No.: 005-47526 | Film No.: 03549273
SIC: 7371 Services-Computer Programming Services