David S. Tierney, Director at KEMPHARM, INC (KMPH), bought 2,000 shares at $4.39 ($9K) on 2022-05-25, disclosed to the SEC on 2022-05-26.
Open-market purchase of $9k KMPH 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 D.
Something here stands out, but not much.
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