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 | |
I was wrong about Trump (Ad) I made a mistake.
A mistake I feel very foolish about.
After speaking with Donald Trump and some of his advisors, I believed him.
I believed the promise that he would finally confront the single most dangerous threat to American life. That he would fix the ticking time bomb I’ve been warning about for 15 years.
But I was wrong. Let me show you exactly what we’re doing to prepare. |
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 | |
A grave, grave error. (Ad) I thought what happened 25 years ago was a once- in-a-lifetime event… but how wrong I was.
Because here we are, a quarter of a century later, almost to the exact day, and it’s happening again.  Here’s the full story for you. |
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 | |
