Portolan Capital Management, LLC 13D and 13G filings for Quanterix Corporation:
- 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 |
| 2025-08-13 4:10 pm Purchase | 2025-06-30 | 13G | Quanterix Corporation QTRX | Portolan Capital Management, LLC | 3,633,622 9.360% | 670,225 (+22.62%) | Filing |
| 2025-05-15 11:29 am Purchase | 2025-03-31 | 13G | Quanterix Corporation QTRX | Portolan Capital Management, LLC | 2,963,397 7.640% | 442,711 (+17.56%) | Filing |
| 2024-11-13 12:41 pm Purchase | 2024-09-30 | 13G | Quanterix Corporation QTRX | Portolan Capital Management, LLC | 2,520,686 6.570% | 602,656 (+31.42%) | Filing |
| 2024-06-27 2:46 pm Purchase | 2024-06-17 | 13G | Quanterix Corporation QTRX | Portolan Capital Management, LLC | 1,918,030 5.010% | 1,918,030 (New Position) | Filing |