Yeung William (CIK 1677876) reported 32 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-02-19). Recent activity: Buy ERII (25,959 shares), Sell ERII (890 shares), Sell ERII (646 shares), Sell ERII (7,271 shares), Sell ERII (1,003 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-19 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 25,959 | $0 |
| 2026-02-09 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 890 | $12,985 |
| 2026-02-09 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 646 | $9,780 |
| 2026-02-03 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 7,271 | $105,793 |
| 2026-02-03 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 1,003 | $14,694 |
| 2026-02-03 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 8,622 | $123,295 |
| 2026-02-03 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 729 | $10,541 |
| 2025-10-27 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 3,530 | $63,540 |
| 2025-10-27 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 3,530 | $61,775 |
| 2025-10-27 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 5,638 | $57,451 |
| 2025-10-27 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 5,638 | $101,484 |
| 2025-10-27 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 3,530 | $26,475 |
| 2025-10-27 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 3,530 | $26,475 |
| 2025-10-22 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 3,530 | $26,475 |
| 2025-10-22 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 3,530 | $60,010 |
| 2025-10-17 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 3,530 | $26,475 |
| 2025-10-17 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 3,530 | $58,245 |
| 2025-10-07 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 1,038 | $7,785 |
| 2025-10-07 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 1,038 | $16,608 |
| 2025-10-07 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 2,529 | $18,968 |
| 2025-10-07 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 2,529 | $40,464 |
| 2025-09-22 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 15,454 | $138,313 |
| 2025-09-22 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 15,454 | $233,201 |
| 2025-09-15 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Buy | 30,877 | $276,349 |
| 2025-09-15 | Energy Recovery, Inc. (ERII) | Chief Legal Officer | Sell | 33,554 | $486,869 |
Source: SEC Form 4 filings · as of 2026-02-19