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 |
| 2026-03-26 4:42 pm Sale | 2026-03-13 | 13G | Castle Biosciences, Inc. CSTL | The Vanguard Group | 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 Purchase | 2025-03-31 | 13G | Castle Biosciences, Inc. CSTL | WASATCH ADVISORS INC | 998,455 3.500% | 998,455 (New Position) | Filing History |
| 2025-04-23 8:19 pm Purchase | 2025-03-31 | 13G | Castle Biosciences, Inc. CSTL | BlackRock Inc. BLK | 2,338,005 8.200% | 2,338,005 (New Position) | 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 | The Vanguard Group | 1,832,535 6.540% | 1,832,535 (New Position) | Filing History |
| 2024-11-14 4:40 pm Unchanged | 2024-11-14 | 13G | Castle Biosciences, Inc. CSTL | GRANAHAN INVESTMENT MANAGEMENT INC | 0 0.000% | 0 (Unchanged) | Filing |
| 2024-11-13 6:44 pm Unchanged | 2024-11-13 | 13G | Castle Biosciences, Inc. CSTL | WASATCH ADVISORS INC | 0 0.000% | 0 (Unchanged) | Filing |
| 2024-07-08 4:32 pm Unchanged | 2024-07-08 | 13G | Castle Biosciences, Inc. CSTL | BlackRock Inc. BLK | 0 0.000% | 0 (Unchanged) | Filing |
| 2024-02-14 09:00 am Unchanged | 2024-02-14 | 13G | Castle Biosciences, Inc. CSTL | GRANAHAN INVESTMENT MANAGEMENT INC | 0 0.000% | 0 (Unchanged) | Filing |
| 2024-02-13 5:01 pm Unchanged | 2024-02-13 | 13G | Castle Biosciences, Inc. CSTL | The Vanguard Group | 0 0.000% | 0 (Unchanged) | Filing |
| 2024-02-13 2:07 pm Unchanged | 2024-02-13 | 13G | Castle Biosciences, Inc. CSTL | PRINCIPAL GLOBAL INVESTORS | 0 0.000% | 0 (Unchanged) | Filing |
| 2024-02-09 12:43 pm Unchanged | 2024-02-09 | 13G | Castle Biosciences, Inc. CSTL | WASATCH ADVISORS INC | 0 0.000% | 0 (Unchanged) | Filing |
| 2024-01-25 1:48 pm Unchanged | 2024-01-25 | 13G | Castle Biosciences, Inc. CSTL | BlackRock Inc. BLK | 0 0.000% | 0 (Unchanged) | Filing |
| 2023-02-09 5:21 pm Unchanged | 2023-02-09 | 13G | Castle Biosciences, Inc. CSTL | WASATCH ADVISORS INC | 0 0.000% | 0 (Unchanged) | Filing |
| 2023-02-09 11:12 am Unchanged | 2023-02-09 | 13G | Castle Biosciences, Inc. CSTL | The Vanguard Group | 0 0.000% | 0 (Unchanged) | Filing |
| 2023-02-03 4:27 pm Unchanged | 2023-02-03 | 13G | Castle Biosciences, Inc. CSTL | BlackRock Inc. BLK | 0 0.000% | 0 (Unchanged) | Filing |
| 2022-02-11 4:01 pm Unchanged | 2022-02-11 | 13G | Castle Biosciences, Inc. CSTL | MAETZOLD DEREK J | 0 0.000% | 0 (Unchanged) | Filing |