ESS TECH INC -CW27 (GWH-WS) Institutional Ownership and Insiders Activity

ESS TECH INC -CW27 (GWH-WS) is widely held by institutional investors, with 9 firms reporting positions valued at approximately $8,835 based on SEC Form 13F filings for the quarter ended June 30, 2026.

Heights Capital Management, Inc is the largest disclosed holder, reporting approximately $2,809 in GWH-WS holdings in its latest filing.