ESS Tech, Inc. — Director's Dealing 2026

Feb 26, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ESS Tech, Inc. (GWH)
CIK: 0001819438
Period of Report: 2026-02-20

Reporting Person: Goodman Kelly F. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-20	Common Stock	S	2269	$1.54	Disposed	215853	Direct

Footnotes

F1: These shares were sold to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs").

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