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Quanterix Corp (NASDAQ:QTRX)
US · Delayed Price · Currency is USD
Healthcare · Medical - Devices
2.85-0.01 (-0.52%)
Insider Score
/ 100
QTRX Insider Score
Quanterix Corp has a live Insider Score.
Scored on 2 qualifying trades from 1 insider in the last 90 days.
QTRX Stock Insider Trading Activity
QTRX stock’s insider trading shows no open-market insider trades by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days2 qualifying buys1 insider$286.35K bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Miller Michael Francis Other | Option exercise | 372 | — | — | 1.0% | 39,069 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 249 | $3.07 | $764.43 | 0.6% | 39,543 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 834 | — | — | 2.1% | 39,792 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 111 | $3.07 | $340.77 | 0.3% | 38,958 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 81 | — | — | 0.2% | 38,533 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 25 | $3.07 | $76.75 | 0.1% | 38,508 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 136 | — | — | 0.4% | 38,644 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 41 | $3.07 | $125.87 | 0.1% | 38,603 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 135 | — | — | 0.3% | 38,738 | Oct 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 41 | $3.07 | $125.87 | 0.1% | 38,697 | Oct 15, 2026 | — | Form 4 |
| Magovcevic-Liebisch Ivana Director | Option exercise | 4,224 | — | — | 36.2% | 15,883 | Oct 2, 2026 | — | Form 4 |
| DONNELLY WILLIAM P Director | Award | 6,964 | $3.41 | $23.75K | 4.3% | 169,365 | Oct 1, 2026 | — | Form 4 |
| Mendel Scott Director | Award | 4,398 | $3.41 | $15.00K | 18.3% | 28,454 | Oct 1, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 834 | — | — | 2.2% | 38,701 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 41 | $2.72 | $111.52 | 0.1% | 37,606 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 372 | — | — | 1.0% | 37,978 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 111 | $2.72 | $301.92 | 0.3% | 37,867 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 249 | $2.72 | $677.28 | 0.6% | 38,452 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 81 | — | — | 0.2% | 37,442 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 25 | $2.72 | $68 | 0.1% | 37,417 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 136 | — | — | 0.4% | 37,553 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 41 | $2.72 | $111.52 | 0.1% | 37,512 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 135 | — | — | 0.4% | 37,647 | Sep 15, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 48 | $2.67 | $128.16 | 0.1% | 37,361 | Aug 31, 2026 | — | Form 4 |
| Miller Michael Francis Other | Option exercise | 159 | — | — | 0.4% | 37,409 | Aug 31, 2026 | — | Form 4 |
| Elliott Jeffrey Thomas Director | Option exercise | 3,955 | — | — | 34.7% | 15,345 | Aug 19, 2026 | — | Form 4 |
| DONNELLY WILLIAM P Director | Option exercise | 2,802 | — | — | 1.8% | 162,401 | Aug 17, 2026 | — | Form 4 |
| Miller Michael Francis Other | Tax withheld | 25 | $2.59 | $64.75 | 0.1% | 36,215 | Aug 15, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.
