Marco Benedetti, Director at ARRHYTHMIA RESEARCH TECHNOLOGY INC /DE/ (HRT), bought 500 shares at $3.80 ($2K) on 2016-05-17, disclosed to the SEC on 2016-05-17.
Open-market purchase of $2k HRT by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.