X0206 3 2021-10-08 0 0001819438 ESS Tech, Inc. GWH 0001571531 Dresselhuys Eric P. C/O ESS TECH, INC. 26440 SW PARKWAY AVE., BLDG. 83 WILSONVILLE OR 97070 1 1 0 0 Chief Executive Officer Employee Stock Option (right to buy) 5.3769 2031-04-27 Common Stock 308931 D Restricted Stock Units 2026-04-08 Common Stock 130059 D One-fourth of the shares subject to the option vest on March 25, 2022 and 1/48th of the shares vest monthly thereafter. Each restricted stock unit, or RSU, represents a contingent right to receive one share of common stock. One half of the RSUs vest if the volume weighted average price of the common stock over twenty trading days within any thirty trading day period is greater than or equal to $12.50, and one half of the RSUs vest if the volume weighted average price of the common stock over twenty trading days within any thirty trading day period is greater than or equal to $15.00. Exhibit 24 - Power of Attorney /s/ Amir Moftakhar, by power of attorney 2021-10-18