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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001193125-20-038295
Filing Date
2020-02-14
Accepted
2020-02-14 16:20:35
Documents
4
Group Members
IVY INVESTMENT MANAGEMENT CO

Document Format Files

Seq Description Document Type Size
1 ASPEN TECHNOLOGY, INC. d875318dsc13ga.htm SC 13G/A 51539
2 JOINT FILING AGREEMENT d875318dex991.htm EX-99.1 4812
3 IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY d875318dex992.htm EX-99.2 908
4 POWER OF ATTORNEY d875318dex993.htm EX-99.3 13067
  Complete submission text file 0001193125-20-038295.txt   71906
Mailing Address 20 CROSBY DRIVE BEDFORD MA 01730
Business Address 20 CROSBY DRIVE BEDFORD MA 01730 781-221-4302
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.: 20620253
SIC: 7371 Services-Computer Programming Services
Office of Technology

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
Office of Finance