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QTRX insider trading

Quanterix Corp — open-market insider buys and $1M+ sells from SEC Forms 3, 4 and 5.
Insider buys · 24 mo
8
Bought · 24 mo
$3.8M
Buys · last 90 days
2 · $296k
Most recent buy
2026-08-14

Cluster buy detected

3 insiders bought QTRX within a short window (2025-06-06→2025-06-12), $2.9M in total — cluster score 69/100. Members see the buyers, the score breakdown and the chart.

See the cluster

Recent insider filings

FiledInsiderTypeSharesPriceValue
2026-08-14DONNELLY WILLIAM P
Director
Bought99,400$2.88$286k
2026-06-12Meadows Benjamin
Chief Commercial Officer
Bought3,500$2.77$10k
2025-09-17Sriram Vandana
Chief Financial Officer
Bought4,150$4.79$20k
2025-06-13WALT DAVID Rcluster
Director
Bought160,000$6.16$986k
2025-06-10Toloue Masoudcluster
President & CEO
Bought45,900$5.42$249k
2025-06-09WALT DAVID Rcluster
Director
Bought210,000$5.40$1.1M
2025-06-09DONNELLY WILLIAM Pcluster
Director
Bought93,113$5.44$507k
2024-09-17WALT DAVID R
Director
Bought47,000$13.29$625k

Most active insider buyers

InsiderRoleBuysTotal bought
WALT DAVID RDirector3$2.7M
DONNELLY WILLIAM PDirector2$793k
Toloue MasoudPresident & CEO1$249k
Sriram VandanaChief Financial Officer1$20k
Meadows BenjaminChief Commercial Officer1$10k

See QTRX on the chart

Every insider buy and sell for QTRX plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.

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Data from the SEC EDGAR ownership filings, refreshed daily. Only open-market purchases (transaction code P) and sales of $1M or more are shown; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Not investment advice.