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. (GWH) entered into definitive agreements for a capital raise combining a registered direct offering and a concurrent private placement. The company sold 6,400,000 shares of common stock at $0.50 per share and issued 12,800,000 common stock purchase warrants with a $0.50 exercise price, generating expected gross proceeds of $3.2 million and net proceeds of about $2.5 million.
The warrants are unregistered, will become exercisable only after stockholders approve both the warrant issuance under NYSE rules and a reverse stock split, and will remain exercisable for five years after that approval. ESS plans to use the proceeds for general corporate purposes, working capital and to repay about $1.5 million under a promissory note with YA II PN, Ltd. The deal was led by Roth Capital Partners, which received a 7% cash fee and a warrant for 320,000 shares. ESS agreed to a 90-day issuance restriction and 90‑day lock-ups for directors and executive officers, and adopted warrant beneficial ownership limits of 4.99% or 9.99% to cap any holder’s post‑exercise ownership.
ESS Tech, Inc. (GWH) is conducting a primary offering of 6,400,000 shares of common stock at $0.50 per share, for gross proceeds of $3.2 million. After a 7.0% placement fee and expenses, ESS expects net proceeds of about $2.5 million.
In a concurrent private placement, ESS will issue unregistered warrants for up to 12,800,000 shares to investors and 320,000 warrants to the placement agent, all with a $0.50 exercise price and five‑year terms starting after required stockholder approval. ESS plans to use proceeds for general corporate purposes, working capital, and to repay about $1.5 million on an outstanding promissory note.
Risk disclosures highlight substantial going concern doubt, significant dilution (about $0.55 per share to new investors), heavy reliance on additional capital, and multiple NYSE listing deficiencies that could result in delisting and reduced liquidity if not cured.
ESS Tech, Inc. received an amended Schedule 13G filing (Amendment No. 2) reporting that Alyeska Investment Group, L.P., Alyeska Fund GP, LLC, and Anand Parekh collectively beneficially own 1,400,000 shares of ESS Tech common stock. This represents 4.76% of the outstanding common shares. The reporting persons have shared voting and shared dispositive power over all 1,400,000 shares and no sole voting or dispositive power. The filing also indicates that the group now holds 5 percent or less of the class.
ESS Tech, Inc. received an updated ownership report showing that Ayrton Capital LLC, Alto Opportunity Master Fund, SPC – Segregated Master Portfolio B, and Waqas Khatri collectively report beneficial ownership of 2,563,934 shares of common stock as of June 30, 2026. This consists of 463,934 shares of common stock and 2,100,000 shares issuable upon exercise of warrants, which are subject to a 9.99% beneficial ownership blocker. Based on 29,389,170 shares outstanding as of May 4, 2026 plus the warrant shares, the filing reports an 8.14% stake for each Reporting Person, with sole voting and sole dispositive power over these shares and no shared voting or dispositive power.
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 very weak operating results for the quarter ended June 30, 2026 while highlighting a strategic pivot to sodium-ion energy storage and a potential business combination. Revenue for the quarter was $73 thousand, down sharply from the prior-year period, driven by fewer equipment deliveries, and the company generated a gross loss of $7.4 million.
Total operating expenses were $7.7 million, up 19% year over year, and quarterly net loss widened to $15.6 million, or $(0.46) per share. For the first half of 2026, net cash used in operating activities was $22.4 million, with $10.8 million of cash and cash equivalents on June 30, 2026 and $5.6 million of unrestricted cash and cash equivalents as of July 31, 2026. Stockholders’ equity turned negative at $(2.7) million.
Strategically, ESS is accelerating U.S.-made sodium-ion development and reports early-stage opportunities approaching $1 billion. It signed a non-binding letter of intent for a potential strategic business combination implying a combined enterprise value of about $515 million, under which current ESS shareholders would own an estimated 5–10% of the combined company if completed. ESS also signed a letter of intent with Juniper Energy targeting deployment of 500+ MWh of sodium-ion storage, including a planned 80 MWh California project, and has repaid $37 million of a $40 million promissory note.
ESS Tech, Inc. provides an update on its liquidity, stating that as of July 31, 2026 it held approximately $5.6 million in cash, cash equivalents and short-term investments.
The company notes that its independent registered public accounting firm has not audited, reviewed or performed any procedures on these balances and does not provide any opinion or assurance. The information is furnished under a current report rather than treated as filed for certain securities law purposes.
ESS Tech, Inc. entered into an amendment to its Sales Agreement for its “at the market offering” program on July 16, 2026. The amendment updates the agreement originally dated November 13, 2025 covering sales of its common stock.
Under the revised arrangement, ESS Tech terminated the Sales Agreement with respect to BMO Capital Markets, Canaccord Genuity, Needham & Company, and Stifel, and added Roth Capital Partners as an additional sales agent. Roth also assumes the role of “qualified independent underwriter” under FINRA Rule 5121, replacing Canaccord. ESS Tech filed a corresponding amendment to its prospectus supplement related to the program and noted that Yorkville Ives and Roth or their affiliates may provide future banking and advisory services for customary fees.
ESS Tech, Inc. is updating the terms of its at-the-market equity program for up to $75,000,000 of common stock under an Amended Sales Agreement. The company removed BMO Capital Markets, Canaccord Genuity, Needham & Company, and Stifel from the group of sales agents and added Roth Capital Partners as a new Agent.
Roth has also replaced Canaccord as the qualified independent underwriter under FINRA Rule 5121, and ESS Tech has agreed to indemnify Roth against certain liabilities, including under the Securities Act of 1933. From December 11, 2025 through this supplement date, ESS Tech sold 4,324,577 shares of common stock for an aggregate offering price of approximately $6,238,450, leaving common stock with an aggregate offering price of approximately $68,761,550 available to be offered under the Amended Sales Agreement.
The company’s common stock trades on the NYSE under the symbol GWH, and the last quoted sale price on July 15, 2026 was $1.02 per share.
ESS Tech, Inc. is the subject of a Form 25 notification reporting the removal of a class of its securities from listing and registration on the New York Stock Exchange LLC. The class affected is warrants, each exercisable for one‑fifteenth (1/15) of a share of Common Stock at an exercise price of $172.50. The filing cites compliance with 17 CFR 240.12d2-2 and related provisions and is submitted by the Exchange.