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 | |