Bryan D. Rosenberger, Director at Horsehead Holding Corp (ZINC), bought 1,600 shares at $9.30 ($15K) on 2011-08-18, disclosed to the SEC on 2011-08-19.
Open-market purchase of $15k ZINC 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.