Rebecca B. Robertson, 10% Owner at HELICOS BIOSCIENCES CORP (HLCS), bought 242,931 shares at $2.57 ($624K) on 2009-09-18, disclosed to the SEC on 2009-09-21.
Open-market purchase of $624k HLCS 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.
| Filing → |
| CBLL | SELL | 2026-01-06 | $131K | — | Filing → |
| CBLL | SELL | 2025-12-10 | $100K | — | Filing → |
| CBLL | SELL | 2025-12-04 | $14K | — | Filing → |