ESS Tech Ceases Operations and Files for Chapter 7 Bankruptcy

what happened

On November 13, 2026, ESS Tech Inc. (GWHT) told the SEC in a Form 8-K that, after reviewing all strategic alternatives, it had ceased operations. The same day it filed a voluntary petition for Chapter 7 relief under the US Bankruptcy Code in the Delaware bankruptcy court. The information was published by Bankruptcy Or Receivership, citing the company's filing.

After the petition, the court will appoint a trustee who takes control of the company's assets and liabilities, while the powers of its board and officers end. The assets will be sold off and creditor claims paid in the order set out by the Bankruptcy Code.

The company also warned that trading in its stock after the petition is highly speculative and carries a substantial risk of loss. Its audit for the fiscal year ending December 31, 2026 was not completed, so ESS Tech will no longer be able to file its annual 10-K or other periodic reports with the SEC.

why it matters

For the market this is a sign of stress in the energy storage sector, as another manufacturer exits and fewer players remain in the niche. For GWHT holders, the company itself says the chance of any payment on their shares is unlikely.

market impact

GWHT: liquidation and no expected shareholder payouts weigh on the stock

• ▼ESS Tech shares (GWHT) pressure down — the company is being liquidated and shareholder payouts are unlikely

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