Michael R. Niggli, Director at ESS Tech, Inc. (GWH), bought 20,000 shares at $1.13 ($23K) on 2023-05-12, disclosed to the SEC on 2023-05-15.
Open-market purchase of $23k GWH by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Something here stands out, but not much.
| Filing → |
| GWH | BUY | 2022-12-16 | $49K | — | Filing → |
| GWH | BUY | 2022-03-03 | $100K | — | Filing → |