Master Fund Ltd. Atlas, Insider at NORTHFIELD LABORATORIES INC /DE/ (NFLD), bought 107,500 shares at $15.00 ($1.6M) on 2006-12-15, disclosed to the SEC on 2006-12-28.
Open-market purchase of $1.6M NFLD by Insider. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.