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 |
|---|---|---|---|
| EFFECT | Filing | Sep 16, 2026 | — |
| 25-NSE | Delisting notice | Jul 2, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2026 | — |
| EFFECT | Filing | Dec 11, 2025 | — |
| CORRESP | Letter to the SEC | Dec 9, 2025 | — |
| D | Filing | Jul 23, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| DEFR14A | Filing | Aug 8, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | May 24, 2024 | — |
| EFFECT | Filing | Dec 14, 2023 | — |
| CORRESP | Letter to the SEC | Dec 12, 2023 | — |
| CORRESP | Letter to the SEC | Dec 7, 2023 | — |
| UPLOAD | Letter from the SEC | Nov 20, 2023 | — |
| D | Filing | Sep 26, 2023 | — |
| SD | Specialized disclosure (conflict minerals) | May 24, 2023 | — |
| EFFECT | Filing | Nov 17, 2022 | — |
| EFFECT | Filing | Nov 17, 2022 | — |
| CORRESP | Letter to the SEC | Nov 15, 2022 | — |
| UPLOAD | Letter from the SEC | Nov 10, 2022 | — |
| EFFECT | Filing | Mar 16, 2022 | — |
| CORRESP | Letter to the SEC | Mar 14, 2022 | — |
| UPLOAD | Letter from the SEC | Mar 14, 2022 | — |
| RW | Filing | Feb 8, 2022 | — |
| EFFECT | Filing | Dec 13, 2021 | — |
| NT 10-Q | Filing | Nov 16, 2021 | Sep 30, 2021 |
| EFFECT | Filing | Nov 10, 2021 | — |
| CORRESP | Letter to the SEC | Nov 8, 2021 | — |
| UPLOAD | Letter from the SEC | Nov 8, 2021 | — |
| CERT | Nyse certification | Oct 8, 2021 | — |
| 8-A12B | Filing | Oct 8, 2021 | — |
| 25 | Filing | Oct 8, 2021 | — |
| 425 | Filing | Oct 1, 2021 | — |
| 425 | Filing | Sep 28, 2021 | — |
| 425 | Filing | Sep 23, 2021 | — |
| 425 | Filing | Sep 15, 2021 | — |
| EFFECT | Filing | Sep 14, 2021 | — |
| 425 | Filing | Sep 14, 2021 | — |
| SEC STAFF LETTER | Filing | Sep 14, 2021 | — |
| CORRESP | Letter to the SEC | Sep 10, 2021 | — |
| 425 | Filing | Sep 9, 2021 | — |
| 425 | Filing | Sep 2, 2021 | — |
| CORRESP | Letter to the SEC | Aug 26, 2021 | — |
| 425 | Filing | Aug 26, 2021 | — |
| 425 | Filing | Aug 24, 2021 | — |
| NT 10-Q | Filing | Aug 16, 2021 | Jun 30, 2021 |
| UPLOAD | Letter from the SEC | Aug 12, 2021 | — |
| 425 | Filing | Aug 4, 2021 | — |
| 425 | Filing | Aug 2, 2021 | — |
| CORRESP | Letter to the SEC | Jul 28, 2021 | — |
| SEC STAFF LETTER | Filing | Jul 16, 2021 | — |
| UPLOAD | Letter from the SEC | Jul 16, 2021 | — |
| 425 | Filing | Jul 9, 2021 | — |
| 425 | Filing | Jul 9, 2021 | — |
| 425 | Filing | Jun 16, 2021 | — |
| 425 | Filing | Jun 11, 2021 | — |
| 425 | Filing | Jun 9, 2021 | — |
| 425 | Filing | Jun 7, 2021 | — |
| 425 | Filing | May 20, 2021 | — |
| NT 10-Q | Filing | May 18, 2021 | Mar 31, 2021 |
| 425 | Filing | May 7, 2021 | — |
| 425 | Filing | May 7, 2021 | — |
| 425 | Filing | May 7, 2021 | — |
| 425 | 8-k | May 7, 2021 | — |
| EFFECT | Filing | Sep 16, 2020 | — |
| CERT | Filing | Sep 16, 2020 | — |
| 8-A12B | Filing | Sep 16, 2020 | — |
| CORRESP | Letter to the SEC | Sep 15, 2020 | — |
| CORRESP | Letter to the SEC | Sep 15, 2020 | — |
| CORRESP | Letter to the SEC | Sep 15, 2020 | — |
| CORRESP | Letter to the SEC | Sep 15, 2020 | — |
| CORRESP | Letter to the SEC | Sep 11, 2020 | — |
| UPLOAD | Letter from the SEC | Sep 11, 2020 | — |
| UPLOAD | Letter from the SEC | Sep 10, 2020 | — |
| CORRESP | Letter to the SEC | Aug 31, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 24, 2020 | — |
| DRS | Filing | Jul 31, 2020 | — |
Showing 76 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.