X0206 3 2015-07-30 0 0001621832 Aqua Metals, Inc. AQMS 0001237330 DIVITO VINCENT L 501 23RD AVENUE OAKLAND CA 94606 1 0 0 0 Director Stock Option (Right to Buy) 3.56 2020-05-01 Common Stock 21853 D One-third of the total number of shares subject to the option shall vest and become exercisable on each of the first and second anniversary of the May 1, 2015 date of grant, and one-twelfth of the remaining shares subject to the option shall vest and become exercisable on June 1, 2017 and on the first day of the next 11 consecutive months thereafter. /s/ Vincent L. DiVito 2015-07-29