David S. Tierney, Director at KEMPHARM, INC (KMPH), bought 5,000 shares at $11.00 ($55K) on 2015-04-21, disclosed to the SEC on 2015-05-12.
Open-market purchase of $55k KMPH 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.
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