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 are not 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 | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | Filing |
| 2024-02-13 4:58 pm Purchase | 13G | ALTAIR ENGR INC ALTR | VANGUARD GROUP INC | 5,761,445 10.55% | 354,040 (+6.55%) | View |
| 2024-02-13 4:15 pm Purchase | 13G | ALTAIR ENGR INC ALTR | Matrix Capital Management Company LP | 12,233,174 22.4% | 1,362,174 (+12.53%) | View |
| 2024-02-13 3:48 pm Sale | 13G | ALTAIR ENGR INC ALTR | Scapa James Ralph | 17,116,566 23.9% | -237,626 (-1.37%) | View |
| 2024-02-13 3:45 pm Sale | 13G | ALTAIR ENGR INC ALTR | Christ George J | 10,200,732 15.8% | -700,000 (-6.42%) | View |
| 2024-01-31 08:54 am Purchase | 13G | ALTAIR ENGR INC ALTR | PICTET ASSET MANAGEMENT SA | 970 5.3% | 970 (New Position) | View |
| 2024-01-25 4:59 pm Purchase | 13G | ALTAIR ENGR INC ALTR | BlackRock Inc. BLK | 4,588,507 8.4% | 532,043 (+13.12%) | View |
| 2023-06-09 2:15 pm Purchase | 13G | ALTAIR ENGR INC ALTR | VANGUARD GROUP INC | 5,407,405 10.12% | 202,241 (+3.89%) | View |
| 2023-02-13 4:05 pm Purchase | 13G | ALTAIR ENGR INC ALTR | Matrix Capital Management Company LP | 10,871,000 20.75% | 2,271,000 (+26.41%) | View |
| 2023-02-09 11:07 am Purchase | 13G | ALTAIR ENGR INC ALTR | VANGUARD GROUP INC | 5,205,164 9.93% | 577,415 (+12.48%) | View |
| 2023-02-06 09:16 am Purchase | 13G | ALTAIR ENGR INC ALTR | Christ George J | 10,900,732 17.2% | 374,950 (+3.56%) | View |
| 2023-02-06 09:13 am Purchase | 13G | ALTAIR ENGR INC ALTR | Scapa James Ralph | 17,354,192 24.9% | 10,479 (+0.06%) | View |
| 2023-01-31 1:58 pm Sale | 13G | ALTAIR ENGR INC ALTR | BlackRock Inc. BLK | 4,056,464 7.7% | -483,070 (-10.64%) | View |
| 2022-02-14 12:05 pm Purchase | 13G | ALTAIR ENGR INC ALTR | Matrix Capital Management Company LP | 8,600,000 16.93% | 3,444,975 (+66.83%) | View |
| 2022-02-09 3:24 pm Purchase | 13G | ALTAIR ENGR INC ALTR | VANGUARD GROUP INC | 4,627,749 9.11% | 576,927 (+14.24%) | View |
| 2022-02-08 4:52 pm Sale | 13G | ALTAIR ENGR INC ALTR | Christ George J | 10,525,782 17.2% | -1,574,950 (-13.02%) | View |
| 2022-02-08 4:51 pm Sale | 13G | ALTAIR ENGR INC ALTR | Scapa James Ralph | 17,343,713 25.5% | -735,838 (-4.07%) | View |
| 2022-02-03 4:41 pm Purchase | 13G | ALTAIR ENGR INC ALTR | BlackRock Inc. BLK | 4,539,534 8.9% | 254,371 (+5.94%) | View |
| 2021-02-16 10:00 am Purchase | 13G | ALTAIR ENGR INC ALTR | Matrix Capital Management Company LP | 5,155,025 11.92% | 2,762,300 (+115.45%) | View |
| 2021-02-16 06:29 am Sale | 13G | ALTAIR ENGR INC ALTR | Christ George J | 12,100,732 21.9% | -660,000 (-5.17%) | View |
| 2021-02-16 06:26 am Sale | 13G | ALTAIR ENGR INC ALTR | Scapa James Ralph | 18,079,551 29.5% | -359,140 (-1.95%) | View |