Arnold I. Burns, Director at BIOTIME INC (BTX), bought 5,000 shares at $4.17 ($21K) on 2012-04-12, disclosed to the SEC on 2012-04-12.
Open-market purchase of $21k BTX by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Something here stands out, but not much.