Alan D. Rosenson, Director at PRESSURE BIOSCIENCES INC (PBIO), bought 4,200 shares at $0.89 ($4K) on 2011-09-07, disclosed to the SEC on 2011-09-08.
Open-market purchase of $4k PBIO 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.