Robert Yu Lang Mao, Director at Energy Recovery, Inc. (ERII), bought 7,361 shares at $2.67 ($20K) on 2011-06-14, disclosed to the SEC on 2011-06-23.
Open-market purchase of $20k ERII by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.
| Filing → |
| ERII | SELL | 2024-03-04 | $2.5M | — | Filing → |
| ERII | SELL | 2023-11-08 | $6.7M | — | Filing → |
| ERII | SELL | 2022-08-11 | $45K | — | Filing → |