11 filings
8-K12B/A
AZPN
Aspen Technology Inc
2 Jun 22
Notification of registration of securities (amended)
5:14pm
8-K12B/A
AZPN
Aspen Technology Inc
27 May 22
Notification of registration of securities (amended)
5:08pm
S-8
AZPN
Aspen Technology Inc
23 May 22
Registration of securities for employees
4:06pm
8-K12B
AZPN
Aspen Technology Inc
17 May 22
Notification of registration of securities
6:10am
425
AZPN
Aspen Technology Inc
4 May 22
Business combination disclosure
5:09pm
424B3
9jk oqcwe
18 Apr 22
Prospectus supplement
5:08pm
S-4/A
0fussq0x0y4l fio
22 Feb 22
Registration of securities issued in business combination transactions (amended)
5:18pm
S-4
wf5i1r30no10ex
11 Jan 22
Registration of securities issued in business combination transactions
5:01pm
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