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 2 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
 Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,817 | $7.95 | $14K | |
| Paul M. Meister | Grant or award | Common Stock | 3,974 | $0.00 | - | |
| Ivana Magovcevic-Liebisch | Grant or award | Common Stock | 23,372 | $0.00 | - | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 254 | $7.26 | $2K | |
| Malcolm Garret Hampton | Grant or award | Common Stock | 46,727 | - | - | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,242 | $5.74 | $7K | |
| William P. Donnelly - Officer | Grant or award | Stock Options (Right to buy) | 70,091 | $0.00 | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 229 | $5.78 | $1K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 254 | $5.34 | $1K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 229 | $5.78 | $1K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,242 | $5.78 | $7K | |
 Goldman Myla Lai | Grant or award | Common Stock | 2,084 | $5.54 | $12K | |
 David R. Walt | Grant or award | Common Stock | 2,594 | $5.54 | $14K | |
| William P. Donnelly | Grant or award | Common Stock | 5,076 | $5.54 | $28K | |
 Scott Mendel | Grant or award | Common Stock | 2,084 | $5.54 | $12K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 254 | $5.43 | $1K | |
| Vandana Sriram - Officer | Open-market purchase | Common Stock | 4,150 | $4.79 | $20K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 229 | $4.97 | $1K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,242 | $4.97 | $6K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 254 | $4.55 | $1K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 229 | $4.57 | $1K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,242 | $4.57 | $6K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 254 | $5.94 | $2K | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,242 | $5.49 | $7K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 229 | $5.49 | $1K | |
| Scott Mendel | Grant or award | Common Stock | 4,189 | - | - | |
| Scott Mendel | Grant or award | Common Stock | 24,464 | $0.00 | - | |
| Scott Mendel | Grant or award | Stock Option (right to buy) | 50,758 | $0.00 | - | |
| Goldman Myla Lai | Grant or award | Common Stock | 2,940 | - | - | |
| Goldman Myla Lai | Grant or award | Common Stock | 24,464 | $0.00 | - | |
| Goldman Myla Lai | Grant or award | Stock Option (right to buy) | 50,758 | $0.00 | - | |
| Sarah E. Hlavinka | Grant or award | Common Stock | 2,615 | $6.69 | $17K | |
| Paul M. Meister | Grant or award | Common Stock | 2,242 | $6.69 | $15K | |
| David R. Walt | Grant or award | Common Stock | 2,148 | $6.69 | $14K |
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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