Portolan Capital Management LLC 13D and 13G filings for Castle Biosciences, Inc.:
- 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.
- Shares have been adjusted for stock splits.
| 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 |