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Filing Detail
Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001193125-12-060275
Filing Date
2012-02-14
Accepted
2012-02-14 15:03:35
Documents
4
Group Members
IVY INVESTMENT MANAGEMENT COWADDELL & REED FINANCIAL SERVICES, INC.WADDELL & REED INVESTMENT MANAGEMENT COWADDELL & REED, INC.

Document Format Files

Seq Description Document Type Size
1 ASPEN TECHNOLOGY, INC. d295694dsc13ga.htm SC 13G/A 75633
2 JOINT FILING AGREEMENT d295694dex1.htm EX-1 10491
3 IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY d295694dex2.htm EX-2 1303
4 POWER OF ATTORNEY d295694dex3.htm EX-3 23291
  Complete submission text file 0001193125-12-060275.txt   112453
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.: 12608300
SIC: 7371 Services-Computer Programming Services

Mailing Address PO BOX 29217 SHAWNEE MISSION KS 66201-9217
Business Address 6300 LAMAR AVE OVERLAND PARK KS 66202-4200 9132362000
WADDELL & REED FINANCIAL INC (Filed by) CIK: 0001052100 (see all company filings)

IRS No.: 510261715 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 6211 Security Brokers, Dealers & Flotation Companies