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Mailing Address 20 CROSBY DRIVE BEDFORD MA 01730
Business Address 20 CROSBY DRIVE BEDFORD MA 01730 781-221-1939
Aspen Technology, Inc. CIK#: 0001897982 (see all company filings)

SIC: 7371 - SERVICES-COMPUTER PROGRAMMING SERVICES
State location: MA | State of Inc.: DE | Fiscal Year End: 0630
formerly: Emersub CX, Inc. (filings through 2022-05-16)
(CF Office: 06 Technology)
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Items 1 - 40  0001897982 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001398344-24-002795 (34 Act)  Size: 46 KB
2024-02-13 005-93677
24625690
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001897982-24-000011 (34 Act)  Size: 6 MB
2024-02-06 001-41400
24600276
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001897982-24-000010 (34 Act)  Size: 595 KB
2024-02-06 001-41400
24600248
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001086364-24-003750 (34 Act)  Size: 13 KB
2024-01-25 005-93677
24562992
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001897982-24-000004 (34 Act)  Size: 155 KB
2024-01-04 001-41400
24509833
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0001897982-23-000083 (34 Act)  Size: 173 KB
2023-12-15 001-41400
231490346
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001897982-23-000080 (34 Act)  Size: 5 MB
2023-11-06 001-41400
231380116
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001897982-23-000078 (34 Act)  Size: 498 KB
2023-11-06 001-41400
231379993
ARS  Documents Annual Report to Security Holders
Acc-no: 0001897982-23-000070 (34 Act)  Size: 1 MB
2023-10-25 001-41400
231343537
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001897982-23-000067 (34 Act)  Size: 1 MB
2023-10-24 001-41400
231343499
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001897982-23-000065 (34 Act)  Size: 18 MB
2023-10-24 001-41400
231343487
8-K  Documents   Interactive Data Current report, items 5.02, 7.01, and 9.01
Acc-no: 0001897982-23-000054 (34 Act)  Size: 176 KB
2023-10-19 001-41400
231335091
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0000950103-23-014967 (34 Act)  Size: 109 KB
2023-10-13 005-93677
231325601
SC 13D/A  Documents [Amend] General statement of acquisition of beneficial ownership
Acc-no: 0000950103-23-014832 (34 Act)  Size: 162 KB
2023-10-11 005-93677
231319522
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001897982-23-000048 (34 Act)  Size: 156 KB
2023-09-06 001-41400
231239682
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001897982-23-000045 (34 Act)  Size: 143 MB
2023-08-21 001-41400
231189730
8-K  Documents   Interactive Data Current report, items 2.02, 5.05, 7.01, 8.01, and 9.01
Acc-no: 0001897982-23-000035 (34 Act)  Size: 3 MB
2023-08-01 001-41400
231131690
8-K  Documents   Interactive Data Current report, items 7.01, 8.01, and 9.01
Acc-no: 0001897982-23-000032 (34 Act)  Size: 208 KB
2023-05-05 001-41400
23891260
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001897982-23-000028 (34 Act)  Size: 24 MB
2023-05-02 001-41400
23880040
8-K  Documents   Interactive Data Current report, items 2.02, 7.01, and 9.01
Acc-no: 0001897982-23-000022 (34 Act)  Size: 633 KB
2023-04-26 001-41400
23849694
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-23-003706 Size: 39 KB
2023-04-13
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001897982-23-000016 Size: 31 KB
2023-04-04
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-23-003023 Size: 44 KB
2023-03-27
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001897982-23-000014 Size: 80 KB
2023-03-09
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-23-001919 Size: 47 KB
2023-02-27
SC 13G  Documents Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001306550-23-008336 (34 Act)  Size: 13 KB
2023-02-07 005-93677
23594377
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001897982-23-000008 (34 Act)  Size: 68 MB
2023-01-30 001-41400
23569086
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001897982-23-000004 (34 Act)  Size: 623 KB
2023-01-25 001-41400
23552568
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, and 9.01
Acc-no: 0001897982-22-000058 (34 Act)  Size: 39 MB
2022-12-30 001-41400
221502151
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0001897982-22-000054 (34 Act)  Size: 197 KB
2022-12-19 001-41400
221472144
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001897982-22-000051 (34 Act)  Size: 50 KB
2022-12-07 001-41400
221450435
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001897982-22-000047 (34 Act)  Size: 6 MB
2022-11-01 001-41400
221350548
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001897982-22-000043 (34 Act)  Size: 1 MB
2022-10-28 001-41400
221342935
DEF 14A  Documents Other definitive proxy statements
Acc-no: 0001897982-22-000041 (34 Act)  Size: 2 MB
2022-10-28 001-41400
221342901
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001897982-22-000037 (34 Act)  Size: 527 KB
2022-10-26 001-41400
221333340
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001897982-22-000031 (34 Act)  Size: 1 MB
2022-08-31 001-41400
221218012
10-KT  Documents   Interactive Data Transition reports [Rule 13a-10 or 15d-10]
Acc-no: 0001897982-22-000023 (34 Act)  Size: 18 MB
2022-08-25 001-41400
221192959
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001897982-22-000020 (34 Act)  Size: 603 KB
2022-08-08 001-41400
221144431
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001897982-22-000017 (34 Act)  Size: 255 KB
2022-07-29 001-41400
221121474
8-K  Documents   Interactive Data Current report, items 2.02, 8.01, and 9.01
Acc-no: 0001897982-22-000014 (34 Act)  Size: 265 KB
2022-07-27 001-41400
221109145