On May 17, 2023, in connection with the end of his term with the ESS Tech, Inc.'s board of directors ("Board"), Craig Evans, Co-Founder and President of the Company tendered his resignation as President to be effective as of the commencement of the 2023 annual meeting of stockholders held on May 19, 2023. Mr. Evans will continue with the Company full-time as Co-Founder and Advisor to the Chief Executive Officer.