As of the latest Form 4 filed Jul 9, 2026.
What Quanterix Corp insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 43 most recent filings for QTRX.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-09 | 2026-07-08 | Mendel Scott Director | MExercise | +8.07K | — | — | No | Form 4 ↗ |
| 2026-07-09 | 2026-07-08 | LAI GOLDMAN MYLA Director | MExercise | +8.07K | — | — | No | Form 4 ↗ |
| 2026-07-02 | 2026-07-01 | Mendel Scott Director | AAward | +3.46K | $4.34 | $15.0K | No | Form 4 ↗ |
| 2026-07-02 | 2026-07-01 | DONNELLY WILLIAM P Director | AAward | +5.47K | $4.34 | $23.7K | No | Form 4 ↗ |
| 2026-07-02 | 2026-06-30 | Miller Michael Francis Chief Technology Officer | FTax | −39.00 | $4.32 | $168.48 | No | Form 4 ↗ |
| 2026-07-02 | 2026-06-30 | Miller Michael Francis, Chief Technology Officer | MExercise | +130.00 | — | — | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-15 | Sriram Vandana Chief Financial Officer | FTax | −315.00 | $3.10 | $976.50 | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-15 | Sriram Vandana, Chief Financial Officer | MExercise | +1.06K | — | — | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-15 | Sriram Vandana, Chief Financial Officer | FTax | −154.00 | $3.10 | $477.40 | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-15 | Sriram Vandana, Chief Financial Officer | MExercise | +514.00 | — | — | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-15 | Sriram Vandana, Chief Financial Officer | FTax | −79.00 | $3.10 | $244.90 | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-15 | Sriram Vandana, Chief Financial Officer | MExercise | +263.00 | — | — | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis Chief Technology Officer | FTax | −249.00 | $3.10 | $771.90 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | MExercise | +834.00 | — | — | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | FTax | −111.00 | $3.10 | $344.10 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | MExercise | +372.00 | — | — | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | FTax | −41.00 | $3.10 | $127.10 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | MExercise | +135.00 | — | — | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | FTax | −41.00 | $3.10 | $127.10 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | MExercise | +136.00 | — | — | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | FTax | −25.00 | $3.10 | $77.50 | No | Form 4 ↗ |
| 2026-06-16 | 2026-06-15 | Miller Michael Francis, Chief Technology Officer | MExercise | +81.00 | — | — | No | Form 4 ↗ |
| 2026-06-12 | 2026-05-12 | Meadows Benjamin Chief Commercial Officer | PPurchase | +3.50K | $2.77 | $9.70K | No | Form 4 ↗ |
| 2026-05-01 | 2026-04-30 | Miller Michael Francis Chief Operating Officer | FTax | −39.00 | $3.13 | $122.07 | No | Form 4 ↗ |
| 2026-05-01 | 2026-04-30 | Miller Michael Francis, Chief Operating Officer | MExercise | +130.00 | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis Chief Operating Officer | FTax | −249.00 | $3.60 | $896.40 | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | MExercise | +834.00 | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | FTax | −111.00 | $3.60 | $399.60 | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | MExercise | +372.00 | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | FTax | −41.00 | $3.60 | $147.60 | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | MExercise | +135.00 | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | FTax | −41.00 | $3.60 | $147.60 | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | MExercise | +136.00 | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | FTax | −25.00 | $3.60 | $90.00 | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Miller Michael Francis, Chief Operating Officer | MExercise | +81.00 | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Sriram Vandana Chief Financial Officer | FTax | −315.00 | $3.60 | $1.13K | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Sriram Vandana, Chief Financial Officer | MExercise | +1.06K | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Sriram Vandana, Chief Financial Officer | FTax | −154.00 | $3.60 | $554.40 | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Sriram Vandana, Chief Financial Officer | MExercise | +514.00 | — | — | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Sriram Vandana, Chief Financial Officer | FTax | −79.00 | $3.60 | $284.40 | No | Form 4 ↗ |
| 2026-04-17 | 2026-04-15 | Sriram Vandana, Chief Financial Officer | MExercise | +263.00 | — | — | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-01 | Mendel Scott Director | AAward | +4.31K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-01 | DONNELLY WILLIAM P Executive Chair | AAward | +6.18K | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also QTRX’s full analysis or the market-wide insider trading feed. The tabs above jump to QTRX’s other SEC data.
Source: SEC Form 4 filings for QTRX, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.