Quanterix Corp (QTRX)
$2.58-$0.06 (-2.14%) Today
Latest QTRX Insider Trades
William P. Donnelly - DirectorOpen-market purchase$75K
William P. Donnelly - DirectorWilliam P. Donnelly - DirectorWilliam P. Donnelly - DirectorWilliam P. Donnelly - DirectorQuanterix Corp is a life sciences company accelerating biomarker breakthroughs from discovery to diagnostics using ultra-sensitive translational research and spatial biology instruments, consumables, and services. The company sells proprietary instruments and related consumables to research laboratories, contract research organizations (CROs), academic institutions, and bio-pharmaceutical companies, and provides contract research services and clinical laboratory testing services, including four Laboratory Developed Tests (LDTs), through its Accelerator Laboratory. Its products include Simoa, Assay Kits, LDTs & Assay Services, Simoa p-Tau 217, Simoa NfL LDT, Simoa p-Tau 181 LDT, and SP-X Imaging and Analysis System. Geographically, it operates in North America, EMEA, and the Asia Pacific.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 3 | 102,900 | $296K |
| Grant or award | 3 | 150,748 | |
| Option exercise | 48 | 59,340 | |
| Tax withholding / forfeiture | 20 | 2,027 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
81 Form 4 filings on record, the earliest from Oct 1, 2024, newest first. Filing history page 3 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| William P. Donnelly | Grant or award | Common Stock | 4,204 | $6.69 | $28K | |
 Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 254 | $6.65 | $2K | |
 David R. Walt | Open-market purchase | Common Stock | 36,010 | $6.23 | $224K | |
| David R. Walt | Open-market purchase | Common Stock | 123,990 | $6.14 | $761K | |
| David R. Walt | Open-market purchase | Common Stock | 131,869 | $5.43 | $717K | |
| David R. Walt | Open-market purchase | Common Stock | 78,131 | $5.34 | $417K | |
| William P. Donnelly | Open-market purchase | Common Stock | 93,113 | $5.44 | $506K | |
| David R. Walt | Grant or award | Common Stock | 2,156 | $6.67 | $14K | |
| William P. Donnelly | Grant or award | Common Stock | 2,681 | $6.67 | $18K | |
| Paul M. Meister | Grant or award | Common Stock | 2,479 | $6.67 | $17K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 752 | $10.68 | $8K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 75 | $10.68 | $801 | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 368 | $12.33 | $5K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,120 | $11.44 | $13K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 78 | $11.44 | $892 | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 368 | $13.22 | $5K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 78 | $12.48 | $973 | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,120 | $12.48 | $14K | |
| Ivana Magovcevic-Liebisch | Grant or award | Common Stock | 12,800 | $0.00 | - | |
| Ivana Magovcevic-Liebisch | Grant or award | Common Stock | 27,689 | $0.00 | - | |
| Sarah E. Hlavinka | Grant or award | Common Stock | 1,200 | $12.50 | $15K | |
| William P. Donnelly | Grant or award | Common Stock | 1,000 | $12.50 | $13K | |
| Paul M. Meister | Grant or award | Common Stock | 1,200 | $12.50 | $15K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 368 | $12.50 | $5K |
This is as far as the anonymous view goes. Create a free account for all 81 QTRX filings on record.
Quanterix Corp (QTRX) had 15 insider filings in the last 90 days, with the most recent on 2026-08-20. The full record for QTRX runs to 81 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
3 insider purchases of QTRX were filed in the last 90 days, totaling $296K.
No insider sales of QTRX were filed in the last 90 days.
This page tracks QTRX Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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