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 |
| 2026-03-27 10:49 am Sale | 2026-03-13 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | VANGUARD GROUP INC | 0 0.000% | -5,939,946 (Position Closed) | Filing History |
| 2026-02-05 1:31 pm Purchase | 2025-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | FMR LLC | 3,977,008 8.300% | 457,636 (+13.00%) | Filing History |
| 2026-01-08 1:28 pm Purchase | 2025-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | BlackRock Inc. BLK | 4,899,383 10.200% | 224,611 (+4.80%) | Filing History |
| 2025-07-29 1:54 pm Purchase | 2025-06-30 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | VANGUARD GROUP INC | 5,939,946 12.400% | 475,880 (+8.71%) | Filing History |
| 2025-04-17 6:50 pm Unchanged | 2025-03-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | BlackRock Inc. BLK | 4,674,772 9.800% | 0 (Unchanged) | Filing History |
| 2025-04-17 09:35 am Sale | 2025-03-31 | 13G | ASTRONICS CORP ATRO | BlackRock Inc. BLK | 2,192,469 7.200% | -392,844 (-15.20%) | Filing History |
| 2024-11-12 10:32 am Purchase | 2024-11-08 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | FMR LLC | 3,519,372 7.218% | 991,254 (+39.21%) | Filing History |
| 2024-02-14 10:02 am Sale | 2023-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | PRICE T ROWE ASSOCIATES INC | 2,197,039 4.600% | -1,454,469 (-39.83%) | Filing History |
| 2024-02-13 4:55 pm Purchase | 2023-12-29 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | VANGUARD GROUP INC | 5,464,066 11.400% | 345,755 (+6.76%) | Filing History |
| 2024-02-09 09:28 am Purchase | 2024-02-08 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | FMR LLC | 2,528,118 5.276% | 1,095,415 (+76.46%) | Filing History |
| 2024-01-24 09:46 am Sale | 2023-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | BlackRock Inc. BLK | 5,236,453 10.900% | -218,661 (-4.01%) | Filing History |
| 2023-02-14 12:38 pm Purchase | 2022-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | PRICE T ROWE ASSOCIATES INC | 3,651,508 7.800% | 3,651,508 (New Position) | Filing History |
| 2023-02-09 10:54 am Purchase | 2022-12-30 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | VANGUARD GROUP INC | 5,118,311 10.900% | 324,257 (+6.76%) | Filing History |
| 2023-01-26 08:43 am Unchanged | 2022-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | BlackRock Inc. BLK | 5,455,114 11.600% | 0 (Unchanged) | Filing History |
| 2023-01-20 5:17 pm Sale | 2022-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | BlackRock Inc. BLK | 5,455,114 11.600% | -524,817 (-8.78%) | Filing History |
| 2022-02-10 08:27 am Purchase | 2021-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | VANGUARD GROUP INC | 4,794,054 10.400% | 23,178 (+0.49%) | Filing History |
| 2022-01-28 1:54 pm Sale | 2021-12-31 | 13G | MONOLITHIC POWER SYSTEMS, INC MPWR | BlackRock Inc. BLK | 5,979,931 13.000% | -334,766 (-5.30%) | Filing History |