ESS Tech, Inc.

ESS Tech, Inc. is an Oregon-based long-duration energy storage company that completed its SPAC business combination in 2021 under the SPAC ticker STWO, subsequently listing on the New York Stock Exchange under the ticker GWH. The company operates in the clean energy and industrial technology sector, developing iron flow battery systems designed for grid-scale, multi-hour energy storage applications. The December 2021 filing of an amended Form 10-Q/A with the SEC reflects the company's ongoing reporting obligations following the close of the de-SPAC transaction. ESS Tech's post-merger disclosures cover operations, risk factors, and financial results tied to its commercialization pipeline. Sign up on SpacDesk for complete filing history, deal timelines, and real-time SPAC data on ESS Tech and hundreds of other transactions.