ESS Tech, Inc. SEC filings GWHT
ESS Tech, Inc. has 473 filings in SEC EDGAR's recent list, going back to Jul 31, 2020. Its latest annual report, Form ARS, was filed on Apr 15, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 5, 2026 (listing notice, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEF 14A | Proxy statement | Sep 24, 2026 | Sep 24, 2026 |
| PRE 14A | Preliminary proxy statement | Sep 15, 2026 | Sep 14, 2026 |
| DEFA14A | Additional proxy material | Apr 15, 2026 | — |
| DEF 14A | Proxy statement | Apr 15, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Oct 7, 2025 | — |
| DEF 14A | Proxy statement | Sep 22, 2025 | Sep 22, 2025 |
| PRE 14A | Preliminary proxy statement | Sep 9, 2025 | Sep 9, 2025 |
| PRE 14A | Preliminary proxy statement | Jul 29, 2024 | Jul 26, 2024 |
| DEF 14A | Proxy statement | Jul 26, 2024 | Jul 26, 2024 |
| DEFA14A | Additional proxy material | Apr 5, 2024 | — |
| DEF 14A | Proxy statement | Apr 5, 2024 | Apr 5, 2024 |
| DEFA14A | Additional proxy material | May 3, 2023 | — |
| DEFA14A | Additional proxy material | May 3, 2023 | — |
| DEFA14A | Additional proxy material | Apr 7, 2023 | — |
| DEF 14A | Proxy statement | Apr 7, 2023 | May 19, 2023 |
| PRE 14A | Preliminary proxy statement | Mar 23, 2023 | May 19, 2023 |
| DEF 14A | Proxy statement | Apr 22, 2022 | Jun 1, 2022 |
Showing 17 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies (SIC 3690)
- Listed as
- GWHT (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Wilsonville, OR
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1819438
- Former names
- ACON S2 Acquisition Corp. (until Oct 8, 2021)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.