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 4:10 pm Sale | 2026-03-31 | 13G | CASTLE BIOSCIENCES INC CSTL | Portolan Capital Management, LLC | 1,350,283 4.450% | -260,816 (-16.19%) | Filing History |
| 2026-05-15 08:10 am Purchase | 2026-03-31 | 13G | CASTLE BIOSCIENCES INC CSTL | RTW INVESTMENTS LP | 2,758,335 9.300% | 643,098 (+30.40%) | Filing History |
| 2026-03-26 4:42 pm Sale | 2026-03-13 | 13G | CASTLE BIOSCIENCES INC CSTL | VANGUARD GROUP INC | 0 0.000% | -1,832,535 (Position Closed) | Filing History |
| 2026-02-17 08:31 am Purchase | 2025-12-31 | 13G | CASTLE BIOSCIENCES INC CSTL | RTW INVESTMENTS LP | 2,115,237 7.200% | 2,115,237 (New Position) | Filing History |
| 2026-01-21 1:21 pm Sale | 2025-12-31 | 13G | CASTLE BIOSCIENCES INC CSTL | DIMENSIONAL FUND ADVISORS LP | 1,143,799 3.900% | -330,290 (-22.41%) | Filing History |
| 2025-10-09 1:48 pm Purchase | 2025-09-30 | 13G | CASTLE BIOSCIENCES INC CSTL | DIMENSIONAL FUND ADVISORS LP | 1,474,089 5.100% | 1,474,089 (New Position) | Filing History |
| 2025-05-12 3:55 pm Sale | 2025-03-31 | 13G | CASTLE BIOSCIENCES INC CSTL | WASATCH ADVISORS LP | 998,455 3.500% | -827,637 (-45.32%) | Filing History |
| 2025-04-23 8:19 pm Sale | 2025-03-31 | 13G | CASTLE BIOSCIENCES INC CSTL | BlackRock Inc. BLK | 2,338,005 8.200% | -706,968 (-23.22%) | Filing History |
| 2025-04-14 3:34 pm Purchase | 2025-04-07 | 13G | CASTLE BIOSCIENCES INC CSTL | Portolan Capital Management, LLC | 1,611,099 5.650% | 1,611,099 (New Position) | Filing History |
| 2025-01-30 9:33 pm Purchase | 2024-12-31 | 13G | CASTLE BIOSCIENCES INC CSTL | VANGUARD GROUP INC | 1,832,535 6.540% | 371,054 (+25.39%) | Filing History |
| 2024-11-14 4:40 pm Sale | 2024-09-30 | 13G | CASTLE BIOSCIENCES INC CSTL | Granahan Investment Management LLC | 425,220 1.530% | -1,741,251 (-80.37%) | Filing History |
| 2024-11-13 6:44 pm Sale | 2024-11-13 | 13G | CASTLE BIOSCIENCES INC CSTL | WASATCH ADVISORS LP | 1,826,092 6.600% | -764,859 (-29.52%) | Filing History |
| 2024-07-08 4:32 pm Purchase | 2024-06-30 | 13G | CASTLE BIOSCIENCES INC CSTL | BlackRock Inc. BLK | 3,044,973 11.000% | 761,774 (+33.36%) | Filing History |
| 2024-02-14 09:00 am Purchase | 2023-12-31 | 13G | CASTLE BIOSCIENCES INC CSTL | Granahan Investment Management LLC | 2,166,471 8.050% | 2,166,471 (New Position) | Filing History |
| 2024-02-13 5:01 pm Purchase | 2023-12-29 | 13G | CASTLE BIOSCIENCES INC CSTL | VANGUARD GROUP INC | 1,461,481 5.430% | 68,757 (+4.94%) | Filing History |
| 2024-02-13 2:07 pm Purchase | 2023-12-31 | 13G | CASTLE BIOSCIENCES INC CSTL | PRINCIPAL GLOBAL INVESTORS | 1,585,639 5.890% | 1,585,639 (New Position) | Filing History |
| 2024-02-09 12:43 pm Sale | 2024-02-09 | 13G | CASTLE BIOSCIENCES INC CSTL | WASATCH ADVISORS LP | 2,590,951 9.600% | -631,611 (-19.60%) | Filing History |
| 2024-01-25 1:48 pm Purchase | 2023-12-31 | 13G | CASTLE BIOSCIENCES INC CSTL | BlackRock Inc. BLK | 2,283,199 8.500% | 159,511 (+7.51%) | Filing History |
| 2023-02-09 5:21 pm Purchase | 2023-02-09 | 13G | CASTLE BIOSCIENCES INC CSTL | WASATCH ADVISORS LP | 3,222,562 12.200% | 106,074 (+3.40%) | Filing History |
| 2023-02-09 11:12 am Purchase | 2022-12-30 | 13G | CASTLE BIOSCIENCES INC CSTL | VANGUARD GROUP INC | 1,392,724 5.290% | 1,392,724 (New Position) | Filing History |