Richard Parrillo, Director at HUDSON TECHNOLOGIES INC /NY (HDSN), bought 10,000 shares at $4.83 ($48K) on 2026-05-13, disclosed to the SEC on 2026-05-21.
Open-market purchase of $48k HDSN 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 D.
Nothing distinguishes this filing.
| Filing → |
| HDSN | BUY | 2018-05-31 | $57K | — | Filing → |
| HDSN | BUY | 2017-12-19 | $58K | — | Filing → |
| HDSN | SELL | 2016-08-16 | $170K | — | Filing → |