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William P. Donnelly - DirectorOpen-market purchase$75K- William P. Donnelly - DirectorOpen-market purchase$212K
About Quanterix Corp (QTRX)
The SEC lists Quanterix Corp under CIK 0001503274, in laboratory analytical instruments. It is grouped with Health Care companies on this site.
QTRX Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 2 | 99,400 | $286K |
| Grant or award | 3 | 271,677 | |
| Option exercise | 30 | 28,772 | |
QTRX insider transactions (Form 4)
3487 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 |
|---|---|---|---|---|---|---|
| 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 | |
| William P. Donnelly | Grant or award | Common Stock | 4,204 | $6.69 | $28K | |
 David R. Walt | Grant or award | Common Stock | 2,148 | $6.69 | $14K | |
| Paul M. Meister | Grant or award | Common Stock | 2,242 | $6.69 | $15K | |
 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 | |
| William P. Donnelly | Grant or award | Common Stock | 2,681 | $6.67 | $18K | |
| David R. Walt | Grant or award | Common Stock | 2,156 | $6.67 | $14K | |
| 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 | |
| Masoud Toloue - Officer | Tax withholding / forfeiture | Common Stock | 1,120 | $12.48 | $14K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 78 | $12.48 | $973 | |
| 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 |
QTRX insider trading FAQ
What is the latest insider trade for QTRX?
Quanterix Corp (QTRX) had 11 insider filings in the last 90 days, with the most recent on 2026-10-02. The full record for QTRX runs to 87 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying QTRX stock?
2 insider purchases of QTRX were filed in the last 90 days, totaling $286K.
How many insiders are selling QTRX stock?
No insider sales of QTRX were filed in the last 90 days.
Where can I see QTRX SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects QTRX Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Ivana Magovcevic-Liebisch view on EDGAR
- - Scott Mendel view on EDGAR
- - William P. Donnelly view on EDGAR
- - James Edward Gute Jr. view on EDGAR
- - Michael Francis Miller view on EDGAR
- - Michael Francis Miller view on EDGAR
- - Jeffrey Thomas Elliott view on EDGAR
- - William P. Donnelly view on EDGAR
- - Michael Francis Miller view on EDGAR
Related companies with recent insider activity
Learn more
- How to read insider buying signals
- What an open-market purchase by an insider can and cannot tell you.
- Insider activity in Health Care
- Where QTRX's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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- Up to 3 months of QTRX price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
