Yeung William insider trades
Yeung William has filed 32 Form 4s with the SEC that we hold, all for Energy Recovery, Inc. (ERII), as Chief Legal Officer. Across all of them we count 0 purchases worth $0 and 26 sales worth $2.7M reported on Form 4. In the last 12 months: 0 purchases ($0) and 10 sales ($501.7K). The largest single trade was a sale of 40,614 shares of Energy Recovery, Inc. worth $1.1M, dated 2023-08-28. The first filing on our record is dated 2022-02-01 and the latest 2026-07-29.
Energy Recovery, Inc. (ERII)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2022-06-15 | S, sale reported on Form 4 | 2,500 | $47.7K | 2022-06-17 |
| 2023-02-01 | S, sale reported on Form 4 | 794 | $17.3K | 2023-02-03 |
| 2023-02-02 | S, sale reported on Form 4 | 2,913 | $65.7K | 2023-02-03 |
| 2023-02-03 | S, sale reported on Form 4 | 836 | $19.0K | 2023-02-07 |
| 2023-03-09 | S, sale reported on Form 4 | 882 | $21.2K | 2023-03-13 |
| 2023-08-28 | S, sale reported on Form 4 | 40,614 | $1.1M | 2023-08-29 |
| 2024-01-30 | S, sale reported on Form 4 | 823 | $13.1K | 2024-02-01 |
| 2024-02-01 | S, sale reported on Form 4 | 733 | $11.5K | 2024-02-05 |
| 2024-02-02 | S, sale reported on Form 4 | 1,400 | $21.4K | 2024-02-05 |
| 2024-02-05 | S, sale reported on Form 4 | 1,013 | $15.1K | 2024-02-07 |
| 2024-03-11 | S, sale reported on Form 4 | 978 | $14.7K | 2024-03-13 |
| 2024-07-29 | S, sale reported on Form 4 | 2,012 | $29.4K | 2024-07-30 |
| 2025-09-11 | S, sale reported on Form 4 | 33,554 | $486.9K | 2025-09-15 |
| 2025-09-18 | S, sale reported on Form 4 | 15,454 | $233.2K | 2025-09-22 |
| 2025-10-03 | S, sale reported on Form 4 | 1,038 | $16.6K | 2025-10-07 |
| 2025-10-03 | S, sale reported on Form 4 | 2,529 | $40.5K | 2025-10-07 |
| 2025-10-16 | S, sale reported on Form 4 | 3,530 | $58.2K | 2025-10-17 |
| 2025-10-20 | S, sale reported on Form 4 | 3,530 | $60.0K | 2025-10-22 |
| 2025-10-23 | S, sale reported on Form 4 | 3,530 | $61.8K | 2025-10-27 |
| 2025-10-24 | S, sale reported on Form 4 | 3,530 | $63.5K | 2025-10-27 |
| 2025-10-24 | S, sale reported on Form 4 | 5,638 | $101.5K | 2025-10-27 |
| 2026-01-28 | S, sale reported on Form 4 | 7,271 | $105.8K | 2026-02-03 |
| 2026-02-02 | S, sale reported on Form 4 | 729 | $10.5K | 2026-02-03 |
| 2026-02-05 | S, sale reported on Form 4 | 890 | $13.0K | 2026-02-09 |
| 2026-02-06 | S, sale reported on Form 4 | 646 | $9.8K | 2026-02-09 |
| 2026-07-28 | S, sale reported on Form 4 | 2,048 | $17.5K | 2026-07-29 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1677876) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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