Rolf Stadheim, Director at Atomera Inc (ATOM), bought 24,800 shares at $5.49 ($136K) on 2018-02-16, disclosed to the SEC on 2018-02-21.
Open-market purchase of $136k ATOM 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.