ESS Tech, Inc. — Director's Dealing 2023

Sep 6, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ESS Tech, Inc. (GWH)
CIK: 0001819438
Period of Report: 2023-09-05

Reporting Person: Dresselhuys Eric P. (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-09-05	Common Stock	A	128617	—	Acquired	2095468	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-09-05	Employee Stock Option (right to buy)	$1.60	A	192926	Acquired	2033-09-05	Common Stock (192926)	Direct

Footnotes

F1: The reported shares are represented by restricted stock units, or RSUs, which vest as to 1/3 of the RSUs on November 20, 2024 and 1/3 of the RSUs vest annually thereafter subject to the Reporting Person remaining as a Service Provider to the issuer as of each vest date.

F2: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.

F3: 1/3 of the shares subject to the option shall vest on the one year anniversary of the date of grant and 1/3 of the shares subject to the option shall vest annually thereafter, provided that the Reporting Person remains as a Service Provider to the issuer as of each vest date.