Stefano Ferrari, Director at Matinas BioPharma Holdings, Inc. (MTNB), bought 5,000 shares at $1.24 ($6K) on 2017-09-07, disclosed to the SEC on 2017-09-07.
Open-market purchase of $6k MTNB by Director. 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.