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 |
| 2026-04-28 4:12 pm Purchase | 2026-03-31 | 13G | AMBARELLA, INC AMBA | Vanguard Portfolio Management | 3,752,800 8.570% | 3,752,800 (New Position) | Filing History |
| 2026-03-26 3:24 pm Sale | 2026-03-13 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 0 0.000% | -5,480,285 (Position Closed) | Filing History |
| 2026-01-30 1:29 pm Purchase | 2025-12-31 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 5,480,285 12.720% | 865,718 (+18.76%) | Filing History |
| 2025-04-23 8:00 pm Sale | 2025-03-31 | 13G | AMBARELLA, INC AMBA | BlackRock Inc. BLK | 3,081,149 7.300% | -300,048 (-8.87%) | Filing History |
| 2024-11-12 1:26 pm Unchanged | 2024-09-30 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 4,614,567 11.180% | 0 (Unchanged) | Filing History |
| 2024-11-04 10:57 am Purchase | 2024-09-30 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 4,614,567 11.180% | 522,033 (+12.76%) | Filing History |
| 2024-02-13 4:58 pm Purchase | 2023-12-29 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 4,092,534 10.170% | 59,742 (+1.48%) | Filing History |
| 2024-02-09 11:32 am Sale | 2023-12-31 | 13G | AMBARELLA, INC AMBA | BlackRock Inc. BLK | 3,381,197 8.400% | -77,267 (-2.23%) | Filing |
| 2023-09-11 1:33 pm Purchase | 2023-08-31 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 4,032,792 10.180% | 436,793 (+12.15%) | Filing History |
| 2023-02-09 11:07 am Purchase | 2022-12-30 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 3,595,999 9.280% | 137,564 (+3.98%) | Filing History |
| 2023-02-07 2:10 pm Sale | 2022-12-31 | 13G | AMBARELLA, INC AMBA | BlackRock Inc. BLK | 3,458,464 8.900% | -569,557 (-14.14%) | Filing |
| 2022-04-08 09:57 am Purchase | 2022-03-31 | 13G | AMBARELLA, INC AMBA | BlackRock Inc. BLK | 4,028,021 10.900% | 522,698 (+14.91%) | Filing |
| 2022-02-09 3:24 pm Purchase | 2021-12-31 | 13G | AMBARELLA, INC AMBA | VANGUARD GROUP INC | 3,458,435 9.350% | 351,808 (+11.32%) | Filing History |
| 2022-02-07 4:40 pm Purchase | 2021-12-31 | 13G | AMBARELLA, INC AMBA | BlackRock Inc. BLK | 3,505,323 9.500% | 662,339 (+23.30%) | Filing |