Joseph A. Zaccagnino, Director at Mallinckrodt plc (MNK), bought 5,000 shares at $21.30 ($107K) on 2017-11-13, disclosed to the SEC on 2017-11-13.
Open-market purchase of $106k MNK by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Something here stands out, but not much.