Reinhard J. Ambros, Director at AILERON THERAPEUTICS INC (ALRN), bought 5,800 shares at $1.22 ($7K) on 2020-06-15, disclosed to the SEC on 2020-06-17.
Open-market purchase of $7k ALRN 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 C.
Nothing distinguishes this filing.