Clifford K. Chiu, Director at CAMBIUM LEARNING GROUP, INC. (ABCD), bought 1,000 shares at $4.25 ($4K) on 2016-05-12, disclosed to the SEC on 2016-05-16.
Open-market purchase of $4k ABCD 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.
Nothing distinguishes this filing.