Renu Gupta, Director at Corbus Pharmaceuticals Holdings, Inc. (CRBP), bought 5,000 shares at $1.89 ($9K) on 2015-08-17, disclosed to the SEC on 2015-08-19.
Open-market purchase of $9k CRBP 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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