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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0000919574-12-001473
Filing Date
2012-02-14
Accepted
2012-02-14 13:42:12
Documents
1

Document Format Files

Seq Description Document Type Size
1 d1264976_13g-a.htm SC 13G/A 145289
  Complete submission text file 0000919574-12-001473.txt   146696
Mailing Address 200 WHEELER ROAD BURLINGTON MA 01803
Business Address 200 WHEELER ROAD BURLINGTON MA 01803 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.: 005-44607 | Film No.: 12607312
SIC: 7371 Services-Computer Programming Services

Mailing Address 535 MADISON AVENUE, 36TH FLOOR NEW YORK NY 10022
Business Address 535 MADISON AVENUE, 36TH FLOOR NEW YORK NY 10022 212-792-8800
CADIAN CAPITAL MANAGEMENT, LLC (Filed by) CIK: 0001423686 (see all company filings)

IRS No.: 000000000
Type: SC 13G/A