Robert J. VanderZanden, Director at SPHERIX INC (SPEX), bought 1,000 shares at $1.05 ($1K) on 2017-05-31, disclosed to the SEC on 2017-05-31.
Open-market purchase of $1k SPEX 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.
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