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.
The ESS Tech, Inc. (NYSE: GWH) SEC filings page on Stock Titan provides access to the company’s regulatory disclosures, including Forms 10-K, 10-Q and 8-K, as well as proxy statements and material agreements. These documents offer detailed insight into ESS’s long-duration iron flow energy storage business, its capital structure, governance and risk profile.
In its periodic reports, ESS describes its role as a manufacturer of long-duration energy storage systems for commercial and utility-scale applications, based on iron flow battery technology that uses iron, salt and water. Quarterly and annual reports discuss topics such as revenue, operating expenses, cash flows, financing arrangements and factors that could affect the business. Investors can review these filings to understand how ESS is funding its strategic shift to the Energy Base platform and managing its balance sheet.
ESS frequently files Current Reports on Form 8-K to disclose material events. Recent 8-K filings have covered leadership changes, including the appointment of a new Chief Executive Officer, Chief Strategy Officer and General Counsel, Chief Financial Officer and Chief Operating Officer. Other 8-Ks describe financing transactions such as an unsecured promissory note of up to $40 million with an investment fund managed by Yorkville Advisors Global, amendments to that note, and the launch of a $75 million at-the-market equity offering program under a Sales Agreement with several agents.
The company’s definitive proxy statement (DEF 14A) provides information on board composition, corporate governance, executive compensation and stockholder voting matters, including approval of share issuances related to its standby equity purchase agreement and certain warrants. These materials help investors evaluate ESS’s governance structure and shareholder approvals for key capital measures.
On Stock Titan, ESS filings are supplemented with AI-powered summaries that explain the main points of long and technical documents, highlight significant changes, and point out items such as financing obligations, equity programs and governance decisions. Users can monitor new filings as they are posted to understand how ESS’s long-duration energy storage strategy, leadership and capital plans are reflected in its official SEC disclosures.
ESS Tech, Inc. (GWH) insider sale notice: This Form 144 reports that 3,878 restricted shares of common stock, acquired on 05/20/2025, are proposed for sale through Morgan Stanley Smith Barney LLC on the NYSE with an aggregate market value of $6,668.22. The filing lists 14,189,663 shares outstanding, and shows multiple recent sales by the same person totaling 22,836 shares between 08/21/2025 and 09/17/2025 with combined gross proceeds reported. The filer certifies they are not aware of undisclosed material adverse information and provides broker and transaction details as required by Rule 144.
ESS Tech, Inc. provides directors' biographies, committee compositions, governance procedures, recent executive changes, and certain equity plan details in its definitive proxy statement. The filing highlights new and continuing board members with energy and cleantech experience, including Michael R. Niggli, Sandeep Nijhawan, and chairman Harry Quarls, and describes committee memberships for audit, compensation, and nominating and corporate governance. The audit committee met five times in 2024 and the compensation committee met three times. The board revised its Director Compensation Policy in January 2025 to fix the annual restricted stock unit award by shares and directors agreed to forego cash pay for fiscal 2025. Leadership changes disclosed include the separation of CEO Eric Dresselhuys (last day Feb 14, 2025), termination of CFO Anthony Rabb (effective Aug 1, 2025), appointment of Kelly F. Goodman as Interim CEO, Kate Suhadolnik as Interim CFO (Aug 1, 2025), and Jigish Trivedi as COO (Aug 18, 2025). The 2021 equity plan automatic refresh and ESPP refresh mechanics are described, with a 2025 Plan increase of 599,325 shares noted.
Form 144 filed for ESS Tech, Inc. (GWH). The notice reports a proposed sale of 3,000 common shares via Morgan Stanley Smith Barney on 09/17/2025 with an aggregate market value of $4,830.30. The filing shows the shares were acquired as restricted stock on 02/20/2025 (1,785 shares) and 05/20/2025 (1,215 shares), with payment dates matching acquisition dates. It discloses the issuer has 14,189,663 shares outstanding. The filer also reported multiple recent sales by Anthony A Rabb in August and September 2025 totaling 19,836 shares for gross proceeds of $28,378.12 across four transactions. The notice includes the standard representation that the seller is not aware of undisclosed material adverse information.
Form 144 notice for ESS Tech, Inc. (GWH) reports a proposed sale of 4,774 common shares through Morgan Stanley Smith Barney on the NYSE with an aggregate market value of $6,790.54 and an approximate sale date of 09/10/2025. The filer acquired the shares as restricted stock in 2024 in three separate grants (1,658 shares on 11/20/2024; 1,659 shares on 08/20/2024; 1,457 shares on 05/20/2024). The filing also discloses three sales by the same person in the prior three months: 5,001 shares on 09/04/2025 for $6,375.27, 5,062 shares on 08/29/2025 for $7,538.84, and 4,999 shares on 08/21/2025 for $7,673.47. The filer certifies no undisclosed material adverse information and includes the standard Rule 144 representations.
ESS Tech, Inc. presents director biographies, governance committee charters, recent leadership changes and financing actions in its preliminary proxy for the October 6, 2025 annual meeting. The filing discloses interim appointments: Kelly F. Goodman as Interim CEO, Kate Suhadolnik as Interim CFO and Jigish Trivedi as COO, and notes separations of former CEO Eric Dresselhuys and former CFO Anthony Rabb. The board describes committee composition and that non-employee directors receive a $50,000 annual cash retainer. The Company issued $0.9 million of promissory notes repaid with a 15% exit fee and issued warrants exercisable for 129,312 shares at $3.48. The Company seeks stockholder approval to permit issuance up to 19.99% (2,566,333 shares) under a Purchase Agreement and to approve issuance of up to 129,312 Warrant Shares. Outstanding shares used for ownership calculations: 14,551,643 as of August 31, 2025.
Trivedi Jigish Dhirajlal, COO of ESS Tech, Inc. (GWH), was granted 275,000 restricted stock units (RSUs) on 08/18/2025. The RSUs are reported at a $0 acquisition price and each RSU represents a contingent right to one share of the company’s common stock. The award vests 25% on August 20, 2026 and thereafter 1/16th each quarter, subject to the reporting person remaining a service provider through each vesting date. The Form 4 was signed by a power of attorney on 09/05/2025 and shows sole filing by one reporting person.
Form 144 notice from ESS Tech, Inc. (GWH) reports a proposed sale of 5,001 common shares through Morgan Stanley Smith Barney (NYSE) with an aggregate market value of $6,375.27 and approximately 14,189,663 shares outstanding. The filing lists four prior restricted-stock acquisitions between May 2024 and February 2025 totaling 4,501 shares acquired, and two reported sales in August 2025 of 5,062 and 4,999 shares. The filer certifies no undisclosed material adverse information.
ESS Tech, Inc. has set October 6, 2025 as the date for its 2025 annual meeting of stockholders. The company notes that this meeting will occur more than 25 days after the one-year anniversary of its 2024 annual meeting, so it is establishing a revised deadline for stockholder proposals.
Stockholder proposals intended for inclusion in the proxy materials under Exchange Act Rule 14a-8 must be received by the Company’s Secretary by September 8, 2025 and must comply with SEC rules and the company’s Amended and Restated Bylaws. Separately, stockholders who wish to submit proposals or director nominations for consideration at the meeting but not for inclusion in the proxy materials must also deliver notice to the Secretary by 5:00 p.m. Pacific time on September 8, 2025, in accordance with the Bylaws. The company states that any adjournment, rescheduling or postponement of the annual meeting will not restart or extend these notice periods.
Form 144 filed by an insider of ESS Tech, Inc. (GWH) discloses a proposed sale of 5,062 common shares through Morgan Stanley Smith Barney on the NYSE, with an aggregate market value of $7,538.84. The filing shows the shares to be sold were acquired as restricted stock on multiple dates in 2023 and 2024, in lots of 1,288; 218; 212; 1,503; and 1,841 shares. The filing also reports a sale by the same person, Anthony Rabb, of 4,999 shares on 08/21/2025 for gross proceeds of $7,673.47.
The number of shares outstanding reported in the notice is 14,189,663, so the proposed sale represents a very small fraction of outstanding shares. The filer certifies they are not aware of any undisclosed material adverse information about the issuer. No earnings, forward guidance, or other operational details are included.
ESS Tech, Inc. (GWH) Form 4 reports that Kate Eileen Suhadolnik, serving as Interim CFO and an officer, had 1,232 shares of common stock disposed on 08/20/2025 under transaction code F at a price of $1.61 per share. The filing states these shares were withheld by the issuer upon vesting of restricted stock units to satisfy tax withholding obligations.
After the reported disposition, Ms. Suhadolnik beneficially owns 28,954 shares of common stock. The filing clarifies that a portion of the holdings are RSUs, each representing a contingent right to one share. The Form 4 is signed by power of attorney and reflects a routine insider tax-withholding disposition rather than an open-market sale.
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