Robert Langer, Director at SONTRA MEDICAL CORP (SONT), bought 250,000 shares at $0.10 ($25K) on 2007-01-30, disclosed to the SEC on 2007-01-31.
Open-market purchase of $25k SONT 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.
| Filing → |
| RUBY | SELL | 2019-04-17 | $132K | — | Filing → |
| RUBY | SELL | 2019-01-18 | $109K | — | Filing → |
| NVIV | SELL | 2013-06-05 | $28K | — | Filing → |