Form 4 Filing for Aqua Metals, Inc.

This filing details a transaction by Benjamin S. Taecker, Chief Eng and Opr Officer of Aqua Metals, Inc. On April 13, 2026, Mr. Taecker disposed of 715 shares of Common Stock at a price of $3.92 per share. This transaction was to cover tax liabilities related to the vesting of a previously reported restricted share grant. Following this transaction, Mr. Taecker owns 58,065 shares. The filing also notes that 26,482 shares underlying restricted stock units are not yet vested. The transaction code "F" indicates shares withheld and returned to the plan.