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 |
| 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 INC | 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 INC | 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 INC | 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 INC | 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 INC | 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 |
| 2023-02-03 4:27 pm Purchase | 2022-12-31 | 13G | Castle Biosciences, Inc. CSTL | BlackRock Inc. BLK | 2,123,688 8.100% | 322,301 (+17.89%) | Filing History |
| 2022-02-11 4:01 pm Sale | 2021-12-31 | 13G | Castle Biosciences, Inc. CSTL | MAETZOLD DEREK J | 1,022,068 4.000% | -633,207 (-38.25%) | Filing History |
| 2022-02-10 5:23 pm Purchase | 2022-02-10 | 13G | Castle Biosciences, Inc. CSTL | WASATCH ADVISORS INC | 3,116,488 12.300% | 609,423 (+24.31%) | Filing History |
| 2022-02-04 4:12 pm Purchase | 2021-12-31 | 13G | Castle Biosciences, Inc. CSTL | BlackRock Inc. BLK | 1,801,387 7.100% | 1,801,387 (New Position) | Filing History |
| 2021-06-10 11:46 am Purchase | 2021-06-10 | 13G | Castle Biosciences, Inc. CSTL | WASATCH ADVISORS INC | 2,507,065 10.000% | 442,234 (+21.42%) | Filing History |
| 2021-02-16 9:56 pm Sale | 2020-12-31 | 13G | Castle Biosciences, Inc. CSTL | BRADBURY DANIEL | 743,420 3.000% | -165,158 (-18.18%) | Filing History |
| 2021-02-16 9:44 pm Sale | 2020-12-31 | 13G | Castle Biosciences, Inc. CSTL | MAETZOLD DEREK J | 1,655,275 6.620% | -297,940 (-15.25%) | Filing History |
| 2021-02-16 4:11 pm Sale | 2020-12-31 | 13G | Castle Biosciences, Inc. CSTL | MGC Venture Partners 2013 GP LLC | 741,305 3.100% | -1,213,603 (-62.08%) | Filing History |