Edward Augustine Corcoran, Director at INSIGNIA SYSTEMS INC/MN (ISIG), bought 50,000 shares at $2.92 ($146K) on 2015-11-09, disclosed to the SEC on 2015-11-13.
Open-market purchase of $146k ISIG by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.