Every 10-Q that ESS Tech, Inc. (GWH) has filed with the SEC in the last 24 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 10-Q covers the quarterly report filed between annual reports, so if you follow GWH and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full GWH filings page.
ESS Tech, Inc. reported very limited revenue and continued heavy losses for the three and six months ended June 30, 2026 while warning of substantial doubt about its ability to continue as a going concern. Total revenue was $0.1 million for the quarter and $0.2 million year-to-date, down sharply from prior-year periods as the company winds down legacy contracts and develops new Bridge™ sodium-ion and Energy Base products.
Cost of revenue was $7.5 million for the quarter and $14.7 million year-to-date, producing gross losses and reflecting higher depreciation and $4.3 million in asset abandonment charges tied to a manufacturing shift. Net loss to common stockholders was $15.6 million for the quarter and $31.5 million for six months. Cash used in operating activities was $22.4 million in the first half, leaving $10.8 million of unrestricted cash and cash equivalents and negative stockholders’ equity of $2.7 million. Management states that without near-term additional debt or equity financing, the company may need to curtail or cease operations or seek bankruptcy protection.
ESS Tech, Inc. reported Q1 2026 results showing a small business but significant losses and funding pressure. Revenue was only $0.1 million, down sharply from $0.6 million a year earlier, as the company winds down older contracts while focusing on its Energy Base product.
Cost of revenue was $7.2 million, including higher depreciation and inventory reserves, leading to a gross loss of $7.0 million. Operating expenses fell 33% to $6.7 million, mainly from lower sales and marketing and general and administrative costs. Net loss narrowed to $15.9 million, but interest expense of $2.5 million from the Yorkville promissory note and a sale-leaseback weighed on results.
ESS ended the quarter with $15.5 million in cash and cash equivalents and $6.0 million in short‑term investments, for $21.5 million in liquid assets. Management states that continued losses and limited liquidity create substantial doubt about the company’s ability to continue as a going concern over the next 12 months without new debt or equity financing, despite recent financings including an at‑the‑market program, a registered direct offering, and the Yorkville promissory note.
ESS Tech, Inc. (GWH) reported Q3 2025 results with total revenue of $214 thousand and a net loss of $10.4 million. Gross loss was $4.7 million as cost of revenue of $4.9 million outweighed modest sales. Operating expenses fell year over year to $5.1 million, reflecting reduced R&D and SG&A.
Cash and cash equivalents were $3.5 million as of September 30, 2025, and net cash used in operating activities was $36.4 million for the nine months. Stockholders’ equity shifted to a deficit of $1.8 million from $28.9 million at year-end 2024, and management disclosed substantial doubt about the company’s ability to continue as a going concern.
ESS completed a $10.5 million sale-leaseback of its stack assembly line in July (cash of $4.0 million and $6.5 million applied to prepayments) and raised $3.6 million under a standby equity purchase agreement during Q3. Subsequent to quarter-end, the company entered into a promissory note of up to $40 million and issued a warrant for up to 1,052,104 shares; it also completed $25 million of aggregate sales under the equity purchase agreement.
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.