A. Michael Perry, Director at ARCH COAL INC (ACI), bought 2,340 shares at $21.23 ($50K) on 2011-08-05, disclosed to the SEC on 2011-08-08.
Open-market purchase of $50k ACI 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.