John C. Unkovic, Director at MINE SAFETY APPLIANCES CO (MSA), bought 1,000 shares at $25.75 ($26K) on 2011-08-22, disclosed to the SEC on 2011-08-22.
Open-market purchase of $26k MSA 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.