David R. Walt, Director at Quanterix Corp (QTRX), bought 320,000 shares at $6.23 ($2.0M) on 2025-06-12, disclosed to the SEC on 2025-06-13.
Open-market purchase of $2.0M QTRX by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade C.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $6.23 | 36,010 | $224K | 11.4% |
| 2 | $6.23 | 36,010 | $224K | 11.4% |
| 3 | $6.14 | 123,990 | $761K | 38.6% |
| 4 | $6.14 | 123,990 | $761K | 38.6% |
| Total | $6.16 avg | 320,000 | $2.0M | 100% |
| Filing → |
| QTRX | BUY | 2022-08-10 | $2.6M | — | Filing → |
| QTRX | BUY | 2020-03-17 | $1.8M | — | Filing → |
| XCUR | BUY | 2020-03-16 | $704K | — | Filing → |