03/24/2025
7:30 AM | Aspen Technology (Filer)
| Form 15-12G | |
03/13/2025
3:31 PM | Aspen Technology (Issuer)
Stagno Christopher (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/13/2025
3:20 PM | Antkowiak Patrick M. (Reporting)
Aspen Technology (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/13/2025
3:21 PM | Aspen Technology (Issuer)
BOGAN THOMAS F (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/13/2025
3:22 PM | Aspen Technology (Issuer)
Golz Karen (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/13/2025
3:23 PM | Aspen Technology (Issuer)
HENSHALL DAVID J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/12/2025
9:54 AM | Aspen Technology (Subject)
Nasdaq Stock Market LLC (Filed by)
| Form 25-NSE | |
03/12/2025
9:38 AM | Aspen Technology (Subject)
| Form SC 13E3/A | |
03/12/2025
8:56 AM | Aspen Technology (Subject)
| Form SC 14D9/A | |
03/12/2025
8:31 AM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
03/12/2025
8:03 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-T/A | |
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03/12/2025
8:07 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SCHEDULE 13D/A | |
03/10/2025
7:42 AM | Aspen Technology (Subject)
| Form SC 13E3/A | |
03/10/2025
6:55 AM | Aspen Technology (Subject)
| Form SC 14D9/A | |
03/10/2025
6:33 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-T/A | |
03/10/2025
6:22 AM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
03/05/2025
9:58 AM | Aspen Technology (Filer)
| Form CT ORDER | |
02/28/2025
8:12 AM | Aspen Technology (Subject)
| Form SC 13E3/A | |
02/28/2025
7:37 AM | Aspen Technology (Subject)
| Form SC 14D9/A | |
02/28/2025
7:12 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-T/A | |
02/28/2025
5:15 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-T/A | |
02/24/2025
6:23 AM | Aspen Technology (Subject)
| Form SC 13E3/A | |
02/24/2025
6:03 AM | Aspen Technology (Subject)
| Form SC 14D9/A | |
02/24/2025
5:31 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-T/A | |
02/14/2025
3:16 PM | Aspen Technology (Issuer)
Pietri Antonio J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/10/2025
5:18 PM | Aspen Technology (Issuer)
Cooper Christopher A (Reporting)
| Form 3
Initial statement of beneficial ownership of securities | |
02/10/2025
3:10 PM | Aspen Technology (Issuer)
Vinci Sharon (Reporting)
| Form 3
Initial statement of beneficial ownership of securities | |
02/10/2025
8:42 AM | Aspen Technology (Subject)
| Form SC 13E3 | |
02/10/2025
6:32 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-T/A | |
02/10/2025
6:19 AM | Aspen Technology (Subject)
| Form SC 14D9 | |
02/10/2025
5:31 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-T | |
02/07/2025
1:21 PM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-C | |
02/04/2025
3:38 PM | Aspen Technology (Subject)
| Form SC14D9C | |
02/04/2025
3:07 PM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
01/29/2025
4:15 PM | Aspen Technology (Subject)
| Form SC14D9C | |
01/27/2025
4:24 PM | Aspen Technology (Subject)
| Form SC14D9C | |
01/27/2025
7:13 AM | Aspen Technology (Subject)
| Form SC14D9C | |
01/27/2025
6:11 AM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
01/27/2025
6:04 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-C | |
01/27/2025
6:09 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SCHEDULE 13D/A | |
01/06/2025
8:33 AM | Aspen Technology (Issuer)
Baker David John (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
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01/06/2025
8:34 AM | Aspen Technology (Issuer)
Pietri Antonio J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/06/2025
8:35 AM | Aspen Technology (Issuer)
Stagno Christopher (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
11/20/2024
7:04 AM | Aspen Technology (Subject)
| Form SC14D9C | |
11/05/2024
3:57 PM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-C | |
11/05/2024
6:01 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC 13D/A | |
11/05/2024
6:36 AM | Aspen Technology (Subject)
EMERSON ELECTRIC CO (Filed by)
| Form SC TO-C | |
10/25/2024
3:17 PM | Aspen Technology (Issuer)
Stagno Christopher (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
10/24/2024
3:28 PM | Aspen Technology (Filer)
| Form ARS | |
10/24/2024
3:25 PM | Aspen Technology (Filer)
| Form DEF 14A | |
10/24/2024
3:26 PM | Aspen Technology (Filer)
| Form DEFA14A | |
10/22/2024
5:06 PM | Aspen Technology (Subject)
BlackRock, Inc. (Filed by)
| Form SC 13G/A | |
10/02/2024
3:16 PM | Aspen Technology (Issuer)
Baker David John (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
10/02/2024
3:17 PM | Aspen Technology (Issuer)
Pietri Antonio J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
10/02/2024
3:18 PM | Aspen Technology (Issuer)
Stagno Christopher (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/23/2024
3:27 PM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
09/19/2024
2:38 PM | Aspen Technology (Subject)
Mouritsen Mark Edgar (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
09/18/2024
2:48 PM | Aspen Technology (Subject)
Mouritsen Mark Edgar (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
09/17/2024
4:10 PM | Aspen Technology (Subject)
Mouritsen Mark Edgar (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
09/11/2024
4:20 PM | Aspen Technology (Issuer)
Baker David John (Reporting)
| Form 4/A | |
09/05/2024
5:28 PM | Aspen Technology (Issuer)
Stagno Christopher (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/05/2024
3:37 PM | Aspen Technology (Issuer)
Pietri Antonio J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/05/2024
3:38 PM | Aspen Technology (Issuer)
Baker David John (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
09/04/2024
11:07 AM | Aspen Technology (Subject)
Mouritsen Mark Edgar (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
09/03/2024
12:29 PM | Aspen Technology (Subject)
Mouritsen Mark Edgar (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
09/03/2024
9:59 AM | Aspen Technology (Subject)
Mouritsen Mark Edgar (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
08/30/2024
3:24 PM | Aspen Technology (Issuer)
Whelan, Jr. Robert M. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
08/28/2024
3:52 PM | Aspen Technology (Subject)
Whelan, Jr. Robert M. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
08/21/2024
11:53 AM | Aspen Technology (Subject)
Mouritsen Mark Edgar (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
08/13/2024
3:32 PM | Aspen Technology (Filer)
| Form 10-K
Annual report pursuant to Section 13 or 15(d) | |
08/07/2024
10:40 AM | Aspen Technology (Subject)
Smith Jill D. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
07/25/2024
3:20 PM | Aspen Technology (Issuer)
Baker David John (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/03/2024
3:24 PM | Antkowiak Patrick M. (Reporting)
Aspen Technology (Issuer)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/03/2024
3:25 PM | Aspen Technology (Issuer)
BOGAN THOMAS F (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/03/2024
3:26 PM | Aspen Technology (Issuer)
Golz Karen (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/03/2024
3:27 PM | Aspen Technology (Issuer)
HENSHALL DAVID J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/03/2024
3:27 PM | Aspen Technology (Issuer)
Shenkman Arlen (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/03/2024
3:29 PM | Aspen Technology (Issuer)
Whelan, Jr. Robert M. (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
07/02/2024
3:30 PM | Aspen Technology (Issuer)
Stagno Christopher (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/27/2024
3:28 PM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
06/20/2024
3:40 PM | Aspen Technology (Issuer)
Baker David John (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
06/03/2024
3:33 PM | Aspen Technology (Issuer)
Pietri Antonio J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/23/2024
12:13 PM | Aspen Technology (Subject)
Smith Jill D. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
05/21/2024
9:25 AM | Aspen Technology (Subject)
Whelan, Jr. Robert M. (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
05/14/2024
3:06 PM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
05/07/2024
3:18 PM | Aspen Technology (Issuer)
HENSHALL DAVID J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
05/07/2024
3:07 PM | Aspen Technology (Filer)
| Form 10-Q
General form for quarterly reports under Section 13 or 15(d) | |
05/07/2024
3:08 PM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
04/29/2024
8:03 AM | Aspen Technology (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
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