X0407 4 2023-07-03 0001621832 Aqua Metals, Inc. AQMS 0001652660 Merrill Judd 5370 KIETZKE LN SUITE 201 RENO NV 89511 1 Chief Financial Officer 1 Common Stock 2023-07-03 4 F 0 87276 1.21 D 1486507 D Common Stock 2023-07-06 4 D 0 25000 1.12 D 1461507 D Represents the number of shares withheld and returned to the plan to cover the tax liability of the July 3, 2023 vesting of a previously reported restricted share grant represented in Table I. Includes 704,662 shares underlying restricted stock units ("RSUs") that are not yet vested and deliverable. Represents the number of shares sold by the Reporting Person under a 10b5-1 plan. Adoption date of referenced 10b5-1(c) plan is: 03-16-2023 /s/ Judd Merrill 2023-07-06