William Yeung

Companies

• Energy Recovery Inc.General counsel Jun 24, 2016 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Energy Recovery Inc. ERII104,859 shares²$701.0K at $6.68Jul 29, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jul 28, 2026Sold 2,048 shares at $8.56 of Energy Recovery Inc.²
• Jul 27, 2026Shares withheld for tax 2,828 shares at $8.42 of Energy Recovery Inc.²
• Feb 17, 2026Granted 25,959 shares of Energy Recovery Inc.³
• Feb 6, 2026Sold 646 shares at $15.14 of Energy Recovery Inc.⁴
• Feb 5, 2026Sold 890 shares at $14.59 of Energy Recovery Inc.⁴
• Feb 2, 2026Sold 729 shares at $14.46 of Energy Recovery Inc.⁵
• Jan 30, 2026Shares withheld for tax 8,622 shares at $14.30 of Energy Recovery Inc.⁵
• Jan 30, 2026Shares withheld for tax 1,003 shares at $14.65 of Energy Recovery Inc.⁵
• Jan 28, 2026Sold 7,271 shares at $14.55 of Energy Recovery Inc.⁵
• Oct 24, 2025Sold 3,530 shares at $18.00 of Energy Recovery Inc.⁶
• Oct 24, 2025Exercised options 3,530 shares at $7.50 of Energy Recovery Inc.⁶
• Oct 24, 2025Sold 5,638 shares at $18.00 of Energy Recovery Inc.⁶
• Oct 24, 2025Exercised options 5,638 shares at $10.19 of Energy Recovery Inc.⁶
• Oct 23, 2025Sold 3,530 shares at $17.50 of Energy Recovery Inc.⁶
• Oct 23, 2025Exercised options 3,530 shares at $7.50 of Energy Recovery Inc.⁶
• Oct 20, 2025Sold 3,530 shares at $17.00 of Energy Recovery Inc.⁷
• Oct 20, 2025Exercised options 3,530 shares at $7.50 of Energy Recovery Inc.⁷
• Oct 16, 2025Sold 3,530 shares at $16.50 of Energy Recovery Inc.⁸
• Oct 16, 2025Exercised options 3,530 shares at $7.50 of Energy Recovery Inc.⁸
• Oct 3, 2025Sold 2,529 shares at $16.00 of Energy Recovery Inc.⁹
• Oct 3, 2025Exercised options 2,529 shares at $7.50 of Energy Recovery Inc.⁹
• Oct 3, 2025Sold 1,038 shares at $16.00 of Energy Recovery Inc.⁹
• Oct 3, 2025Exercised options 1,038 shares at $7.50 of Energy Recovery Inc.⁹
• Sep 18, 2025Sold 15,454 shares at $15.09 of Energy Recovery Inc.¹⁰
• Sep 18, 2025Exercised options 15,454 shares at $8.95 of Energy Recovery Inc.¹⁰