Company facts
- Headquarters
- Wilsonville, Oregon
- Most recent report
- 8-K, filed Sep 3, 2026
- Incorporated
- Delaware
- Filings on record
- 471 filings
- On EDGAR
- CIK 1819438
- Fiscal year ends
- December
- Filer status
- Non-accelerated filer, Smaller reporting company
Financials 8 of 28
News 8 of 80
Prospectuses and Registrations 8 of 68
- 424B3 Prospectus supplement for an offering Sep 16, 2026
- S-3 Shelf registration statement Sep 8, 2026
- 424B5 Prospectus supplement for an offering Aug 21, 2026
- 424B5 Prospectus supplement for an offering Jul 17, 2026
- 25-NSE Notice that a security was delisted Jul 2, 2026
- S-8 Registration statement for an employee plan Mar 5, 2026
- 424B5 Prospectus supplement for an offering Jan 30, 2026
- 424B3 Prospectus supplement for an offering Dec 11, 2025
Proxies 8 of 18
- DEF 14A Proxy statement for a shareholder vote Sep 24, 2026
- PRE 14A Preliminary proxy statement Sep 15, 2026
- DEFA14A Extra proxy material Apr 15, 2026
- DEF 14A Proxy statement for a shareholder vote Apr 15, 2026
- DEFA14A Extra proxy material Oct 7, 2025
- DEF 14A Proxy statement for a shareholder vote Sep 22, 2025
- PRE 14A Preliminary proxy statement Sep 9, 2025
- DEFR14A Aug 8, 2024
Ownership 8 of 199
- 4 Insider reported a trade Aug 24, 2026
- 4 Insider reported a trade Aug 24, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Aug 14, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Aug 13, 2026
- 4 Insider reported a trade Jun 8, 2026
- 4 Insider reported a trade Jun 2, 2026
- 4 Insider reported a trade Jun 2, 2026
- 4 Insider reported a trade Jun 2, 2026
Other 8 of 78
- EFFECT Notice that a registration became effective Sep 16, 2026
- SD Conflict minerals disclosure Jun 1, 2026
- ARS Annual report sent to shareholders Apr 15, 2026
- EFFECT Notice that a registration became effective Dec 11, 2025
- CORRESP Reply to SEC staff Dec 9, 2025
- ARS Annual report sent to shareholders Sep 22, 2025
- D Jul 23, 2025
- SD Conflict minerals disclosure May 30, 2025
Everything here comes from ESS Tech, Inc.'s own filings on SEC EDGAR. The filing list is rechecked every hour.