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 |
| 2026-05-15 4:33 pm Purchase | 2026-03-31 | 13G | MASIMO CORP MASI | Pentwater Capital Management LP | 3,176,000 6.100% | 3,176,000 (New Position) | Filing History |
| 2026-05-14 9:28 pm Purchase | 2026-03-31 | 13G | MASIMO CORP MASI | Barclays PLC | 2,892,262 5.540% | 2,892,262 (New Position) | Filing History |
| 2026-05-14 5:00 pm Sale | 2026-03-31 | 13G | MASIMO CORP MASI | Joe Kiani | 3,657,039 6.500% | -2,247,590 (-38.06%) | Filing History |
| 2026-04-30 4:37 pm Sale | 2026-03-31 | 13G | MASIMO CORP MASI | BlackRock Portfolio Management LLC | 116,871 0.200% | -4,269,431 (-97.34%) | Filing History |
| 2026-03-27 10:33 am Sale | 2026-03-13 | 13G | MASIMO CORP MASI | VANGUARD GROUP INC | 0 0.000% | -4,781,318 (Position Closed) | Filing History |
| 2026-03-06 10:05 am Sale | 2026-02-27 | 13G | MASIMO CORP MASI | FMR LLC | 2,349,975 4.500% | -5,681,108 (-70.74%) | Filing History |
| 2026-02-17 9:45 pm Sale | 2026-02-16 | 13D | MASIMO CORP MASI | Politan Capital Management LP | 4,590,873 6.200% | -125,663 (-2.66%) | Filing History |
| 2026-02-13 7:59 pm Sale | 2025-12-31 | 13G | MASIMO CORP MASI | Joe Kiani | 5,904,629 10.300% | -472,091 (-7.40%) | Filing History |
| 2026-01-21 12:26 pm Sale | 2025-12-31 | 13G | MASIMO CORP MASI | BlackRock Portfolio Management LLC | 4,386,302 8.200% | -1,150,472 (-20.78%) | Filing History |
| 2025-11-12 8:00 pm Sale | 2025-09-30 | 13G | MASIMO CORP MASI | Joe Kiani | 6,376,720 11.100% | -207,063 (-3.15%) | Filing History |
| 2025-08-12 7:00 pm Sale | 2025-06-30 | 13G | MASIMO CORP MASI | Joe Kiani | 6,583,783 11.400% | -1,032,198 (-13.55%) | Filing History |
| 2025-04-22 8:01 pm Purchase | 2025-03-31 | 13G | MASIMO CORP MASI | Joe Kiani | 7,615,981 13.200% | 2,643,162 (+53.15%) | Filing History |
| 2025-03-04 12:39 pm Purchase | 2025-02-28 | 13G | MASIMO CORP MASI | BlackRock Portfolio Management LLC | 5,536,774 10.300% | 5,536,774 (New Position) | Filing History |
| 2025-02-12 09:30 am Purchase | 2024-12-31 | 13G | MASIMO CORP MASI | FMR LLC | 8,031,083 15.000% | 1,103,511 (+15.93%) | Filing History |
| 2025-02-07 1:50 pm Sale | 2025-01-31 | 13G | MASIMO CORP MASI | BlackRock, Inc. BLK | 4,231,142 7.900% | -4,249,088 (-50.11%) | Filing History |
| 2024-09-25 4:01 pm Purchase | 2024-09-24 | 13D | MASIMO CORP MASI | Politan Capital Management LP | 4,716,536 8.800% | 1,790 (+0.04%) | Filing History |
| 2024-08-30 4:56 pm Unchanged | 2024-08-30 | 13D | MASIMO CORP MASI | Politan Capital Management LP | 4,714,746 8.800% | 0 (Unchanged) | Filing History |
| 2024-07-17 5:29 pm Unchanged | 2024-07-17 | 13D | MASIMO CORP MASI | Politan Capital Management LP | 4,714,746 8.900% | 0 (Unchanged) | Filing History |
| 2024-07-15 5:50 pm Unchanged | 2024-07-15 | 13D | MASIMO CORP MASI | Politan Capital Management LP | 4,714,746 8.900% | 0 (Unchanged) | Filing History |
| 2024-07-12 3:26 pm Unchanged | 2024-07-12 | 13D | MASIMO CORP MASI | Politan Capital Management LP | 4,714,746 8.900% | 0 (Unchanged) | Filing History |