04/07/2025
3:15 PM | Altair Engineering (Subject)
Matrix Capital Management Company, LP (Filed by)
| Form SCHEDULE 13G/A | |
04/07/2025
8:30 AM | Altair Engineering (Filer)
| Form 15-12G | |
03/28/2025
7:34 AM | Altair Engineering (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
03/26/2025
5:31 PM | Altair Engineering (Subject)
Scapa James Ralph (Filed by)
| Form SCHEDULE 13G/A | |
03/26/2025
5:32 PM | Altair Engineering (Issuer)
Srikanth Mahalingam (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
4:10 PM | Altair Engineering (Subject)
Christ George J (Filed by)
| Form SCHEDULE 13G/A | |
03/26/2025
3:36 PM | Altair Engineering (Issuer)
Christ Revocable Trust (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:36 PM | Altair Engineering (Issuer)
Boyce Mary Cunningham (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:41 PM | Altair Engineering (Issuer)
Carter Sandra Ann (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:41 PM | Altair Engineering (Issuer)
Earhart Stephen P (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:41 PM | Altair Engineering (Issuer)
James R. Scapa Declaration of Trust (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
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03/26/2025
3:42 PM | Altair Engineering (Issuer)
Buckner Stephanie (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:42 PM | Altair Engineering (Issuer)
Brown Matthew Charles (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:45 PM | Altair Engineering (Issuer)
Messano Amy (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:46 PM | Altair Engineering (Issuer)
JRS Investments LLC (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:46 PM | Altair Engineering (Issuer)
Kunju Ravi (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:47 PM | Altair Engineering (Issuer)
Saravia Gilma (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:50 PM | Altair Engineering (Issuer)
Harris Teresa A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:52 PM | Altair Engineering (Issuer)
Scapa James Ralph (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:53 PM | Altair Engineering (Issuer)
Marraccini Jeffrey (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:25 PM | Altair Engineering (Issuer)
GC Investments LLC (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:29 PM | Altair Engineering (Issuer)
Christ George J (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
3:30 PM | Altair Engineering (Issuer)
Anderson James Francis (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/26/2025
2:54 PM | Altair Engineering (Filer)
| Form POSASR | |
03/26/2025
10:26 AM | Altair Engineering (Subject)
Nasdaq Stock Market LLC (Filed by)
| Form 25-NSE | |
03/25/2025
3:35 PM | Altair Engineering (Filer)
| Form 10-K/A | |
03/21/2025
3:53 PM | Altair Engineering (Issuer)
Kunju Ravi (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
10:39 AM | Altair Engineering (Issuer)
Saravia Gilma (Reporting)
| Form 4/A | |
03/19/2025
10:29 AM | Altair Engineering (Issuer)
Maitra Raoul (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
10:31 AM | Altair Engineering (Issuer)
Dias Nelson (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
10:33 AM | Altair Engineering (Issuer)
Marraccini Jeffrey (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
10:35 AM | Altair Engineering (Issuer)
Scapa James Ralph (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
10:26 AM | Altair Engineering (Issuer)
Gayle Brian (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
9:44 AM | Altair Engineering (Issuer)
Saravia Gilma (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
9:46 AM | Altair Engineering (Issuer)
Messano Amy (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/19/2025
9:48 AM | Altair Engineering (Issuer)
Buckner Stephanie (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/18/2025
7:39 AM | Altair Engineering (Subject)
Maitra Raoul (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/18/2025
7:30 AM | Altair Engineering (Subject)
Kunju Ravi (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/18/2025
6:35 AM | Altair Engineering (Subject)
Gayle Brian (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/18/2025
6:05 AM | Altair Engineering (Subject)
Dias Nelson (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/06/2025
4:46 PM | Altair Engineering (Issuer)
Harris Teresa A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
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03/06/2025
4:47 PM | Altair Engineering (Issuer)
Brown Matthew Charles (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/06/2025
3:52 PM | Altair Engineering (Subject)
Harris Teresa A (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/05/2025
11:01 AM | Altair Engineering (Issuer)
Buckner Stephanie (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:02 AM | Altair Engineering (Issuer)
Altair Engineering (Issuer)
Brown Matthew Charles (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:03 AM | Altair Engineering (Issuer)
Altair Engineering (Issuer)
Saravia Gilma (Reporting)
Saravia Gilma (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:04 AM | Altair Engineering (Issuer)
Kunju Ravi (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:05 AM | Altair Engineering (Issuer)
Altair Engineering (Issuer)
Maitra Raoul (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:06 AM | Altair Engineering (Issuer)
Altair Engineering (Issuer)
Dias Nelson (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:07 AM | Altair Engineering (Issuer)
Gayle Brian (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:09 AM | Altair Engineering (Issuer)
Altair Engineering (Issuer)
Marraccini Jeffrey (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/05/2025
11:14 AM | Altair Engineering (Issuer)
Messano Amy (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
03/03/2025
1:33 PM | Altair Engineering (Subject)
Dias Nelson (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/03/2025
1:44 PM | Altair Engineering (Subject)
Saravia Gilma (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/03/2025
1:05 PM | Altair Engineering (Subject)
Messano Amy (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
03/03/2025
1:15 PM | Altair Engineering (Subject)
Brown Matthew Charles (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
02/27/2025
12:53 PM | Altair Engineering (Issuer)
Brown Matthew Charles (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
12:55 PM | Altair Engineering (Issuer)
Dias Nelson (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
12:56 PM | Altair Engineering (Issuer)
Maitra Raoul (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
12:58 PM | Altair Engineering (Issuer)
Kunju Ravi (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
12:47 PM | Altair Engineering (Issuer)
Messano Amy (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
12:49 PM | Altair Engineering (Issuer)
Gayle Brian (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
12:51 PM | Altair Engineering (Issuer)
Saravia Gilma (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/27/2025
9:49 AM | Altair Engineering (Issuer)
Harris Teresa A (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/25/2025
5:35 AM | Altair Engineering (Subject)
Brown Matthew Charles (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
02/20/2025
3:25 PM | Altair Engineering (Filer)
| Form 10-K
Annual report pursuant to Section 13 or 15(d) | |
02/14/2025
11:34 AM | Altair Engineering (Issuer)
Buckner Stephanie (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
11:36 AM | Altair Engineering (Issuer)
Messano Amy (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:35 AM | Altair Engineering (Issuer)
Saravia Gilma (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:36 AM | Altair Engineering (Issuer)
Maitra Raoul (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:38 AM | Altair Engineering (Issuer)
Srikanth Mahalingam (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:39 AM | Altair Engineering (Issuer)
Kunju Ravi (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:40 AM | Altair Engineering (Issuer)
Dias Nelson (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:41 AM | Altair Engineering (Issuer)
Brown Matthew Charles (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:43 AM | Altair Engineering (Issuer)
Scapa James Ralph (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:33 AM | Altair Engineering (Issuer)
Marraccini Jeffrey (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/14/2025
9:34 AM | Altair Engineering (Issuer)
Gayle Brian (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
02/05/2025
12:23 PM | Altair Engineering (Subject)
BlackRock, Inc. (Filed by)
| Form SCHEDULE 13G/A | |
01/22/2025
3:17 PM | Altair Engineering (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
01/16/2025
3:36 PM | Altair Engineering (Filer)
| Form 8-K
Current report pursuant to Section 13 or 15(d) | |
01/16/2025
3:38 PM | Altair Engineering (Filer)
| Form DEFA14A | |
01/16/2025
8:24 AM | Altair Engineering (Issuer)
Brown Matthew Charles (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:08 AM | Altair Engineering (Issuer)
Marraccini Jeffrey (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:12 AM | Altair Engineering (Issuer)
Maitra Raoul (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:15 AM | Altair Engineering (Issuer)
Kunju Ravi (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:19 AM | Altair Engineering (Issuer)
Gayle Brian (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:21 AM | Altair Engineering (Issuer)
Buckner Stephanie (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:02 AM | Altair Engineering (Issuer)
Srikanth Mahalingam (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:04 AM | Altair Engineering (Issuer)
Saravia Gilma (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
01/16/2025
8:06 AM | Altair Engineering (Issuer)
Messano Amy (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/26/2024
8:43 AM | Altair Engineering (Issuer)
Brown Matthew Charles (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
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12/20/2024
7:56 PM | Altair Engineering (Subject)
Brown Matthew Charles (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/18/2024
3:30 PM | Altair Engineering (Filer)
| Form DEFM14A | |
12/17/2024
3:36 PM | Altair Engineering (Issuer)
Buckner Stephanie (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/11/2024
10:05 AM | Altair Engineering (Issuer)
Dias Nelson (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/10/2024
2:00 PM | Altair Engineering (Subject)
Dias Nelson (Reporting)
| Form 144
Notice of proposed sale of securities pursuant to Rule 144 | |
12/05/2024
8:28 AM | Altair Engineering (Issuer)
Scapa James Ralph (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/05/2024
8:30 AM | Altair Engineering (Issuer)
Srikanth Mahalingam (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/02/2024
3:03 PM | Altair Engineering (Issuer)
James R. Scapa Declaration of Trust (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
12/02/2024
3:04 PM | Altair Engineering (Issuer)
JRS Investments LLC (Reporting)
| Form 4
Statement of changes in beneficial ownership of securities | |
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