MacAndrews & Forbes Inc., 10% Owner at SIGA TECHNOLOGIES INC (SIGA), bought 288,474 shares at $3.63 ($1.0M) on 2007-11-29, disclosed to the SEC on 2007-12-03.
Open-market purchase of $1.0M SIGA by 10% Owner. 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.