QTRX Quanterix Corp Insider Trading

CFO Sriram Vandana buys 4,150 shares of QTRX at $4.79; stock down -66.0% from 52-week high

CFO Sriram Vandana purchased 4,150 shares at $4.79 on 2025-09-12, increasing his holdings from 83,050 to 87,200 shares (a +5.0% increase). The transaction occurred with the stock trading $5.26, down -66.0% from its 52-week high of $15.49 and -17.6% over the past 90 days, though up +6.3% over the past 30 days. The purchase occurred in the context of the company reporting a most recent quarter revenue of $24,476,000.00 and a full-year net income of $-30,013,000.00, with annual revenue growth of +12.3% from the prior fiscal year. The transaction represents a modest add to an already substantial executive position worth observing against future earnings and operational metrics.

Director Walt David R purchases 160,000 shares (160.0K) over two days at $6.23 and $6.14 for $984,968.49

Director Walt David R executed 2 separate purchases totaling 160,000 shares at a blended average price of $6.16, increasing his holdings by 9.4% to 1,866,933 shares. The current stock price of $6.06 is 66.6% below the 52-week high of $18.15, and the company remains unprofitable with a net income of -$20,504,000 in the latest quarter, though revenue grew 12.3% year-over-year. This purchase occurs within a cluster pattern, as 2 other insiders also bought within the past 14 days. His cross-ticker track record shows 0 of 1 prior buys were well-timed at the 90-day mark, with an average 90-day return of -15.9%; his same-ticker history at QTRX includes a prior August 2024 buy that returned -15.9% over 90 days.

CEO Toloue Masoud purchased 45,900 shares of QTRX at $5.42 on 2025-06-09; stock +24.6% in 30 days but -63.8% from 52-week high amid cluster buying.

CEO Toloue Masoud acquired 45,900 shares at $5.42, increasing holdings to 518,922 shares—a 9.7% net addition. His prior QTRX purchase in August 2024 achieved a 90-day return of +40.5%, demonstrating well-timed entry on that occasion. This current buy occurs within a cluster pattern: 2 other insiders also purchased within the past 14 days, suggesting coordinated conviction among leadership. However, the stock trades -63.8% below its 52-week high of $18.15 and the company is unprofitable with a full-year net loss of -$20,504,000.00 against revenue of $30,333,000.00. The 30-day momentum is positive (+24.6%), but the broader risk context—deep drawdown from peaks, persistent losses, and depressed valuation—means this accumulation warrants scrutiny alongside the consensus signal implied by the insider cluster.

Director David R. Walt buys 210,000 shares for $1,133,795.69 at $5.40 avg as QTRX falls -72.1% from 52-week high

Director David R. Walt executed 2 separate purchases totaling 210,000 shares for $1,133,795.69 (blended average $5.40), increasing his holdings from 1,496,933 shares to 1,706,933 shares. The timing coincides with significant stock weakness: QTRX is trading at $5.06, down -72.1% from its 52-week high of $18.15 and down -33.4% over 90 days, yet at levels only slightly above the 52-week low of $4.28. Walt's prior open-market buy at QTRX (2024-08-20) showed mixed results: 30d return +16.6% but 90d return -15.9%, indicating his prior timing at this ticker was unsuccessful on the longer horizon. The company remains unprofitable with a net income of $-20,504,000.00 against latest-quarter revenue of $30,333,000.00, despite 12.3% annual revenue growth. A cluster pattern is present: 2 other insiders also bought within the past 14 days, suggesting coordinated director-level accumulation during a period of depressed valuation.

Director William P Donnelly bought 93,113 shares of Quanterix at $5.44 on 2025-06-06, tripling his stake; stock now at $5.06, -72.1% from 52-week high.

Director William P Donnelly purchased 93,113 shares at $5.44, increasing his holdings by 202.5% from 45,981 to 139,094 shares. The transaction occurred when Quanterix trades -72.1% below its 52-week high of $18.15, following a 90-day decline of -33.4%. This purchase is part of a cluster pattern, with 2 other insiders also buying within the past 14 days. However, Donnelly's prior buy at this ticker in 2023 returned +8.0% over 30 days but -8.4% over 90 days, and he has not achieved a 90-day positive return in his cross-ticker track record (0% win rate). The company is unprofitable, reporting a net loss of $20,504,000.00 against $30,333,000.00 in quarterly revenue, which creates a disconnect between the magnitude of this insider accumulation and the underlying financial fundamentals.

Director Walt David R buys 47,000 shares of QTRX at $13.29; stock -53.9% from 52-week high amid ongoing losses.

Director Walt David R purchased 47,000 shares at $13.29 on 2024-08-20, increasing his holdings by 3.3% to 1,487,342 shares total. The purchase occurs at a price -53.9% from the 52-week high of $28.66, and the company remains unprofitable with a net loss of $9,473,000 in the latest quarterly results, despite posting annual revenue growth of +16.0%. The combination of a director accumulating shares during a significant drawdown, coupled with the company's negative earnings trajectory, presents a mixed signal: insider accumulation can suggest confidence in recovery, yet it occurs against a backdrop of ongoing financial losses that warrant investor scrutiny of the company's path to profitability.

CEO Masoud purchases 19,000 QTRX shares at $10.90; stock down 60.4% from 52-week high, company unprofitable.

Toloue Masoud, President & CEO, purchased 19,000 shares of Quanterix at $10.90 on 2024-08-13 for $207,100.00, increasing his holdings to 354,119 shares. The transaction occurred while QTRX trades at $11.35, down 60.4% from its 52-week high of $28.66 and down 30.6% over the trailing 30 days. Quanterix reported a net loss of $9,473,000.00 in its latest quarter despite generating $34,381,000.00 in revenue and posting 16.0% annual revenue growth; the company remains unprofitable on a full-year basis. The CEO's purchase at near the 52-week low price point follows significant recent price deterioration, though the company's underlying revenue trajectory remains positive.