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.