Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0000834237-22-009628
Filing Date
2022-05-09
Accepted
2022-05-09 15:23:32
Documents
1

Document Format Files

Seq Description Document Type Size
1 us0453271035_050922.txt SC 13G 11669
  Complete submission text file 0000834237-22-009628.txt   13364
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)

EIN.: 042739697 | State of Incorp.: DE | Fiscal Year End: 0630
Type: SC 13G | Act: 34 | File No.: 005-44607 | Film No.: 22904584
SIC: 7371 Services-Computer Programming Services

Mailing Address 55 EAST 52ND STREET NEW YORK NY 10055
Business Address 55 EAST 52ND STREET NEW YORK NY 10055 212-810-5300
BlackRock Inc. (Filed by) CIK: 0001364742 (see all company filings)

EIN.: 320174431 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G
SIC: 6211 Security Brokers, Dealers & Flotation Companies