Quanterix (NASDAQ: QTRX) insider transactions

In the twelve months to 10 November 2026, executives and directors of Quanterix reported 0 open-market sales and 3 open-market purchases of 102,900 shares ($296,049), by 2 people, according to the Form 4 filings they submitted to the SEC.

Latest transactions

The 20 most recent transactions in Quanterix shares reported on Form 4
Date	Insider	Role	Transaction	Shares	Price	Held after	Filing
15 October 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+81	—	38,533	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−25	$3.07	38,508	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+136	—	38,644	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−41	$3.07	38,603	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+135	—	38,738	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−41	$3.07	38,697	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+372	—	39,069	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−111	$3.07	38,958	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+834	—	39,792	Form 4
15 October 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−249	$3.07	39,543	Form 4
2 October 2026	Magovcevic-Liebisch Ivana	Director	Option exercise	+4,224	—	15,883	Form 4
1 October 2026	Donnelly William P	Director	Grant or award	+6,964	$3.41	169,365	Form 4
1 October 2026	Mendel Scott	Director	Grant or award	+4,398	$3.41	28,454	Form 4
15 September 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+81	—	37,442	Form 4
15 September 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−25	$2.72	37,417	Form 4
15 September 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+136	—	37,553	Form 4
15 September 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−41	$2.72	37,512	Form 4
15 September 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+135	—	37,647	Form 4
15 September 2026	Miller Michael Francis	Chief Technology Officer	Shares withheld for tax	−41	$2.72	37,606	Form 4
15 September 2026	Miller Michael Francis	Chief Technology Officer	Option exercise	+372	—	37,978	Form 4

Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.

How to read the table

Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.

Where each row comes from

From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Quanterix page; the method, in data sources.

Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.