Quanterix Corp insider trading

QTRXNASDAQ

$3.81+0.17 (+4.67% today)

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (-35.2%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Open market purchase

Open market sell

Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

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Key players

DRDavid R. WaltDirector3.9602%of company
MTMasoud TolouePresident & CEO1.0727%of company
PMPaul M. MeisterDirector0.6624%of company
MDMartin D. MadausDirector0.6165%of company
WPWilliam P. DonnellyDirector0.3581%of company
MGMalcolm Garret HamptonDirector0.1482%of company
ABAlan Bruce SachsDirector0.1482%of company
SESarah E. HlavinkaDirector0.127%of company
KFKaren FlynnDirector0.121%of company
MFMichael Francis MillerChief Technology Officer0.0813%of company

AI Activity Analysis

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Insider activity

Fromto

Company	Insider / role	Action	ΔOwn	Avg price	Amount
QTRX	William P. DonnellyDirector	Open market purchase$212K	+266.1%	$2.93	$212K	Aug 13, 2026	Aug 14, 2026
QTRX	William P. DonnellyDirector	Open market purchase$74.7K	Not reported	$2.75	$74.7K	Aug 12, 2026	Aug 14, 2026
QTRX	Benjamin MeadowsChief Commercial Officer	Open market purchase$9.7K	Not reported	$2.77	$9.7K	May 12, 2026	Jun 12, 2026

End of history · 3 transactions