Lawrence H. Dubois, CTO at ATMI INC (ATMI), bought 2,000 shares at $10.50 ($21K) on 2008-10-28, disclosed to the SEC on 2008-10-29.
Open-market purchase of $21k ATMI by CTO. 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.