Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2025-02-05 1:23 pm Sale | 2024-12-31 | 13G | Altair Engineering Inc. ALTR | BlackRock Inc. BLK | 7,478,856 12.500% | -398,254 (-5.06%) | Filing History |
| 2024-11-21 06:07 am Purchase | 2024-11-21 | 13G | Altair Engineering Inc. ALTR | PICTET ASSET MANAGEMENT SA | 2,275,256 3.800% | 2,274,286 (+234462.47%) | Filing History |
| 2024-11-13 09:09 am Purchase | 2024-09-30 | 13G | Altair Engineering Inc. ALTR | Matrix Capital Management Company LP | 12,430,000 20.900% | 196,826 (+1.61%) | Filing History |
| 2024-11-08 4:44 pm Sale | 2024-09-30 | 13G | Altair Engineering Inc. ALTR | Scapa James Ralph | 17,105,011 22.300% | -11,555 (-0.07%) | Filing History |
| 2024-11-08 4:34 pm Sale | 2024-09-30 | 13G | Altair Engineering Inc. ALTR | Christ George J | 9,450,684 13.900% | -750,048 (-7.35%) | Filing History |
| 2024-07-08 4:32 pm Purchase | 2024-06-30 | 13G | Altair Engineering Inc. ALTR | BlackRock Inc. BLK | 7,877,110 13.800% | 3,288,603 (+71.67%) | Filing History |
| 2024-02-13 4:58 pm Purchase | 2023-12-29 | 13G | Altair Engineering Inc. ALTR | VANGUARD GROUP INC | 5,761,445 10.550% | 354,040 (+6.55%) | Filing History |
| 2024-02-13 4:15 pm Purchase | 2023-12-31 | 13G | Altair Engineering Inc. ALTR | Matrix Capital Management Company LP | 12,233,174 22.400% | 1,362,174 (+12.53%) | Filing History |
| 2024-02-13 3:48 pm Sale | 2023-12-31 | 13G | Altair Engineering Inc. ALTR | Scapa James Ralph | 17,116,566 23.900% | -237,626 (-1.37%) | Filing History |
| 2024-02-13 3:45 pm Sale | 2023-12-31 | 13G | Altair Engineering Inc. ALTR | Christ George J | 10,200,732 15.800% | -700,000 (-6.42%) | Filing History |
| 2024-01-31 08:54 am Purchase | 2023-12-29 | 13G | Altair Engineering Inc. ALTR | PICTET ASSET MANAGEMENT SA | 970 5.300% | 970 (New Position) | Filing History |
| 2024-01-25 4:59 pm Purchase | 2023-12-31 | 13G | Altair Engineering Inc. ALTR | BlackRock Inc. BLK | 4,588,507 8.400% | 532,043 (+13.12%) | Filing History |
| 2023-06-09 2:15 pm Purchase | 2023-05-31 | 13G | Altair Engineering Inc. ALTR | VANGUARD GROUP INC | 5,407,405 10.120% | 202,241 (+3.89%) | Filing History |
| 2023-02-13 4:05 pm Purchase | 2022-12-31 | 13G | Altair Engineering Inc. ALTR | Matrix Capital Management Company LP | 10,871,000 20.750% | 2,271,000 (+26.41%) | Filing History |
| 2023-02-09 11:07 am Purchase | 2022-12-30 | 13G | Altair Engineering Inc. ALTR | VANGUARD GROUP INC | 5,205,164 9.930% | 577,415 (+12.48%) | Filing History |
| 2023-02-06 09:16 am Purchase | 2022-12-31 | 13G | Altair Engineering Inc. ALTR | Christ George J | 10,900,732 17.200% | 374,950 (+3.56%) | Filing History |
| 2023-02-06 09:13 am Purchase | 2022-12-31 | 13G | Altair Engineering Inc. ALTR | Scapa James Ralph | 17,354,192 24.900% | 10,479 (+0.06%) | Filing History |
| 2023-01-31 1:58 pm Sale | 2022-12-31 | 13G | Altair Engineering Inc. ALTR | BlackRock Inc. BLK | 4,056,464 7.700% | -483,070 (-10.64%) | Filing History |
| 2022-02-14 12:05 pm Purchase | 2021-12-31 | 13G | Altair Engineering Inc. ALTR | Matrix Capital Management Company LP | 8,600,000 16.930% | 3,444,975 (+66.83%) | Filing History |
| 2022-02-09 3:24 pm Purchase | 2021-12-31 | 13G | Altair Engineering Inc. ALTR | VANGUARD GROUP INC | 4,627,749 9.110% | 576,927 (+14.24%) | Filing History |