Amerique Du Nord S.n.c. Sanofi-Aventis, 10% Owner at REGENERON PHARMACEUTICALS INC (REGN), bought 1,017,401 shares at $28.00 ($28.5M) on 2010-10-13, disclosed to the SEC on 2010-10-14.
Open-market purchase of $28.5M REGN 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.