Kurt von Emster, Director at CymaBay Therapeutics, Inc. (CBAY), bought 1,600,000 shares at $2.81 ($4.5M) on 2015-07-20, disclosed to the SEC on 2015-07-21.
Open-market purchase of $4.5M CBAY by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Negative factors outweigh the positive ones.