William Yeung's Stock Transactions in Energy Recovery, Inc.

William Yeung, Chief Legal Officer of Energy Recovery, Inc., reported several transactions involving the company's common stock and employee stock options. On October 23, 2025, Yeung acquired 3,530 shares at $7.50 per share and sold the same number of shares at $17.50 per share. On October 24, 2025, he acquired 5,638 shares at $10.19 per share and sold them at $18.00 per share. Additionally, Yeung exercised employee stock options, disposing of 3,530 shares at $7.50 per share on October 23 and 5,638 shares at $10.19 per share on October 24. These transactions were executed under a Rule 10b5-1 trading plan. Yeung's direct ownership in the company's common stock stood at 97,369 shares following these transactions.