Quanterix Corp (QTRX) insider trading.
In Q3 2026, insiders at Quanterix Corp reported 44 non-derivative transactions on 16 Forms 3, 4 and 5: 2 open-market purchases worth $286K and 0 sales.
- Transactions
- 44
- Purchases (P)
- 2
- Sales (S)
- 0
- Net shares, P minus S
- 99,400
- Insiders
- 5
- Last filed
- 2026-09-16
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Miller Michael Francis | Officer · Chief Technology Officer | 36 | 0 | 0 |
| Donnelly William P | Director | 4 | 2 | 0 |
| Mendel Scott | Director | 2 | 0 | 0 |
| Elliott Jeffrey Thomas | Director | 1 | 0 | 0 |
| Lai Goldman Myla | Director | 1 | 0 | 0 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-15 | Miller Michael Francis | F (D) | 111 | $2.72 | 37,867 | Form 4 |
| 2026-09-15 | Miller Michael Francis | M (A) | 834 | — | 38,701 | Form 4 |
| 2026-09-15 | Miller Michael Francis | M (A) | 372 | — | 37,978 | Form 4 |
| 2026-09-15 | Miller Michael Francis | F (D) | 41 | $2.72 | 37,606 | Form 4 |
| 2026-09-15 | Miller Michael Francis | M (A) | 135 | — | 37,647 | Form 4 |
| 2026-09-15 | Miller Michael Francis | F (D) | 41 | $2.72 | 37,512 | Form 4 |
| 2026-09-15 | Miller Michael Francis | M (A) | 136 | — | 37,553 | Form 4 |
| 2026-09-15 | Miller Michael Francis | F (D) | 249 | $2.72 | 38,452 | Form 4 |
| 2026-09-15 | Miller Michael Francis | M (A) | 81 | — | 37,442 | Form 4 |
| 2026-09-15 | Miller Michael Francis | F (D) | 25 | $2.72 | 37,417 | Form 4 |
| 2026-08-31 | Miller Michael Francis | F (D) | 48 | $2.67 | 37,361 | Form 4 |
| 2026-08-31 | Miller Michael Francis | M (A) | 159 | — | 37,409 | Form 4 |
| 2026-08-19 | Elliott Jeffrey Thomas | M (A) | 3,955 | — | 15,345 | Form 4 |
| 2026-08-17 | Donnelly William P | M (A) | 2,802 | — | 162,401 | Form 4 |
| 2026-08-15 | Miller Michael Francis | M (A) | 81 | — | 36,240 | Form 4 |
| 2026-08-15 | Miller Michael Francis | F (D) | 25 | $2.59 | 36,215 | Form 4 |
| 2026-08-15 | Miller Michael Francis | M (A) | 136 | — | 36,351 | Form 4 |
| 2026-08-15 | Miller Michael Francis | F (D) | 41 | $2.59 | 36,310 | Form 4 |
| 2026-08-15 | Miller Michael Francis | M (A) | 135 | — | 36,445 | Form 4 |
| 2026-08-15 | Miller Michael Francis | F (D) | 41 | $2.59 | 36,404 | Form 4 |
| 2026-08-15 | Miller Michael Francis | M (A) | 372 | — | 36,776 | Form 4 |
| 2026-08-15 | Miller Michael Francis | F (D) | 111 | $2.59 | 36,665 | Form 4 |
| 2026-08-15 | Miller Michael Francis | M (A) | 834 | — | 37,499 | Form 4 |
| 2026-08-15 | Miller Michael Francis | F (D) | 249 | $2.59 | 37,250 | Form 4 |
| 2026-08-13 | Donnelly William P | P (A) | 72,245 | $2.93 | 99,400 | Form 4 |
| 2026-08-12 | Donnelly William P | P (A) | 27,155 | $2.75 | 27,155 | Form 4 |
| 2026-07-31 | Miller Michael Francis | F (D) | 39 | $3.48 | 36,159 | Form 4 |
| 2026-07-31 | Miller Michael Francis | M (A) | 130 | — | 36,198 | Form 4 |
| 2026-07-15 | Miller Michael Francis | M (A) | 136 | — | 35,169 | Form 4 |
| 2026-07-15 | Miller Michael Francis | M (A) | 834 | — | 36,317 | Form 4 |
| 2026-07-15 | Miller Michael Francis | F (D) | 111 | $4.24 | 35,483 | Form 4 |
| 2026-07-15 | Miller Michael Francis | M (A) | 372 | — | 35,594 | Form 4 |
| 2026-07-15 | Miller Michael Francis | F (D) | 41 | $4.24 | 35,222 | Form 4 |
| 2026-07-15 | Miller Michael Francis | M (A) | 81 | — | 35,058 | Form 4 |
| 2026-07-15 | Miller Michael Francis | F (D) | 25 | $4.24 | 35,033 | Form 4 |
| 2026-07-15 | Miller Michael Francis | F (D) | 249 | $4.24 | 36,068 | Form 4 |
| 2026-07-15 | Miller Michael Francis | F (D) | 41 | $4.24 | 35,128 | Form 4 |
| 2026-07-15 | Miller Michael Francis | M (A) | 135 | — | 35,263 | Form 4 |
| 2026-07-08 | Lai Goldman Myla | M (A) | 8,073 | — | 15,041 | Form 4 |
| 2026-07-08 | Mendel Scott | M (A) | 8,073 | — | 24,056 | Form 4 |
| 2026-07-01 | Donnelly William P | A (A) | 5,472 | $4.34 | 160,305 | Form 4 |
| 2026-07-01 | Mendel Scott | A (A) | 3,456 | $4.34 | 16,837 | Form 4 |
| 2026-06-30 | Miller Michael Francis | M (A) | 130 | — | 35,016 | Form 4 |
| 2026-06-30 | Miller Michael Francis | F (D) | 39 | $4.32 | 34,977 | Form 4 |
Transaction codes in this quarter
Get QTRX insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1503274&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · QTRX company page · Quanterix Corp on SEC.gov
Questions
Are insiders buying or selling Quanterix Corp (QTRX)?
In Q3 2026, insiders at Quanterix Corp reported 44 non-derivative transactions on 16 Forms 3, 4 and 5: 2 open-market purchases worth $286K and 0 sales. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Quanterix Corp insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/qtrx.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.