ARCH Venture Partners V L.P., 10% Owner at NeurogesX Inc (NGSX), bought 1,744,186 shares at $1.65 ($2.9M) on 2011-07-21, disclosed to the SEC on 2011-07-25.
Open-market purchase of $2.9M NGSX by 10% Owner. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Negative factors outweigh the positive ones.