Quanterix (QTRX) Insider Trading & Ownership $6.92 +0.23 (+3.44%) Closing price 04:00 PM EasternExtended Trading$6.90 -0.02 (-0.29%) As of 06:29 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Quanterix (NASDAQ:QTRX) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage6.90%Number OfInsiders Buying(Last 12 Months)2Amount OfInsider Buying(Last 12 Months)$3.25MNumber OfInsiders Selling(Last 12 Months)0 Get QTRX Insider Trade Alerts Want to know when executives and insiders are buying or selling Quanterix stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address QTRX Insider Buying and Selling by Quarter Quanterix Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails6/13/2025David R WaltDirectorBuy123,990$6.14$761,298.60 6/12/2025David R WaltDirectorBuy36,010$6.23$224,342.30 6/9/2025David R WaltDirectorBuy78,131$5.34$417,219.54 6/6/2025David R WaltDirectorBuy131,869$5.43$716,048.67 6/6/2025William P DonnellyDirectorBuy93,113$5.44$506,534.72 8/20/2024David R WaltDirectorBuy47,000$13.29$624,630.00 (Data available from 1/1/2013 forward) QTRX Insider Trading Activity - Frequently Asked Questions Who is on Quanterix's Insider Roster? The list of insiders at Quanterix includes David R Walt, E Kevin Hrusovsky, John J Fry, Laurie J Olson, Masoud Toloue, Michael A Doyle, and William P Donnelly. Learn more on insiders at QTRX. What percentage of Quanterix stock is owned by insiders? 6.90% of Quanterix stock is owned by insiders. Learn more on QTRX's insider holdings. Which Quanterix insiders have been buying company stock? The following insiders have purchased QTRX shares in the last 24 months: David R Walt ($2,743,539.11), and William P Donnelly ($1,008,504.72). How much insider buying is happening at Quanterix? Insiders have purchased a total of 530,313 QTRX shares in the last 24 months for a total of $3,752,043.83 bought. Which Quanterix insiders have been selling company stock? The following insider sold QTRX shares in the last 24 months: Laurie J Olson ($60,025.00). How much insider selling is happening at Quanterix? Insiders have sold a total of 2,500 Quanterix shares in the last 24 months for a total of $60,025.00 sold. More Insider Trading Tools from MarketBeat Related Companies TRNS Insider Trades EYPT Insider Trades ALNT Insider Trades LAB Insider Trades CTKB Insider Trades SENS Insider Trades AEHR Insider Trades QSI Insider Trades MASS Insider Trades FEIM Insider Trades Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles Insider Selling at NVIDIA Could Turn Into an Opportunity The Top Insider Sells From Q2: Buy, Sell, or Hold?3 Hot Trades for Insiders, But Are They Good Buys for Investors?Insiders Chase Income and Stability in American Tower—Here’s Why3 Tech Stocks With High and Rising Institutional Interest This page (NASDAQ:QTRX) was last updated on 7/2/2025 by MarketBeat.com Staff From Our PartnersGet Your Bank Account “Fed Invasion” Ready with THESE 4 Simple StepsStarting as soon as a few months from now, the United States government will make a sweeping change to bank ac...Weiss Ratings | SponsoredBuffett’s $325 Billion Cash Problem — Solved by Gold?A bombshell announcement is just weeks away — and it could send shockwaves through the gold market. 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