Welcome to our dedicated page for ESS Tech SEC filings (Ticker: GWH), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
ESS Tech, Inc. filings document the public-company records of an energy storage manufacturer focused on long-duration iron flow systems. Recent disclosures include Form 8-K reports for operating results and financial condition, material agreements, capital-structure matters, and securities identified as common stock and warrants.
The company's proxy materials cover annual meeting matters, board composition, executive compensation and corporate-governance practices. Other filings record leadership changes, shareholder voting matters, liquidity and financing disclosures, and formal updates tied to commercialization of ESS energy storage products.
ESS Tech, Inc. reported interim results reflecting continued commercialization of its iron flow batteries and material liquidity strain. For the six months ended June 30, 2025 the company recorded a net loss of $29.1 million, used $30.6 million of cash in operating activities and had $0.8 million of unrestricted cash and cash equivalents as of June 30, 2025. Management disclosed substantial doubt about the company’s ability to continue as a going concern for 12 months and is evaluating financing options including additional equity, debt, or sales under a SEPA.
Key subsequent actions include a Standby Equity Purchase Agreement (SEPA) with an investor committing up to $25.0 million (sales subject to conditions) and sales of 1,214,633 shares for $2.0 million under the SEPA as of the statement date. The company also completed a $10.5 million sale and leaseback of a stack assembly line with UOP, issued and repaid $0.9 million of bridge promissory notes (with 15% exit fees), and sold 616,264 shares under an ATM for net proceeds of $0.7 million. The filing highlights cost-reduction measures, reduced operating expenses versus prior year periods, ongoing product commercialization efforts, related-party arrangements (notably with Honeywell/UOP), and reliance on future financings to fund operations.
ESS Tech, Inc. filed a current report to note that it released its financial results for the quarter ended June 30, 2025. On August 14, 2025, the company issued a press release detailing its operating results and overall financial condition for that quarter.
The press release is furnished as Exhibit 99.1 and is not considered filed for liability purposes under the Exchange Act unless specifically incorporated into another filing. The report is signed on behalf of ESS Tech, Inc. by Interim Chief Financial Officer Kate Suhadolnik.
ESS Tech, Inc. (NYSE: GWH) filed an 8-K disclosing the immediate, non-severance termination of Chief Financial Officer Anthony Rabb on 1-Aug-2025. The company states the dismissal is not related to accounting policies, reporting practices, or internal controls. Controller Kate Suhadolnik (age 36) is elevated to interim CFO, becoming principal financial and accounting officer effective the same date. Suhadolnik joined ESS in Sept-2021, became Controller in Apr-2023, and previously spent nine years at Deloitte & Touche. Her annual salary is $220,000 with discretionary cash/stock bonus; employment remains at-will. The board has started an internal/external search for a permanent CFO. No related-party transactions, family ties, or special arrangements were reported, and she has executed the standard indemnification agreement previously filed as Ex. 10.12.
The filing contains no new financial results or guidance. Investors should monitor potential impacts on capital-raising plans and execution risk while the CFO position is interim.