4processed

Form 4 — Insider Transaction

ESS Tech, Inc.(GWH-WT)

Filing Date

June 4, 2026

Accepted

June 4, 2026

Accession No.

0002106707-26-000006

CIK

0001819438

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Buckley Drew PCEOOther25.0K$1.02625.0KCommon StockJun 4, 2026