ESS Tech, Inc.
Close on Oct 19, 2026
- Market cap
- $2.75M
- P/E (TTM)
- –
- Dividend yield
- –
About ESS Tech
Miscellaneous Electrical Machinery, Equipment & Supplies, SIC 3690
ESS Tech, Inc. develops and manufactures long-duration energy storage systems utilizing iron flow battery technology. The company designs its batteries with earth-abundant materials, primarily salt, iron, and water, enabling prolonged cycling and safe operation across varied temperatures. Its primary commercial product offering is the Energy Base, a gigawatt-hour scale, configurable battery storage solution, alongside core power train components designed for on-site integration with third-party balance-of-system equipment. These solutions serve both behind-the-meter and front-of-the-meter customers, including electric utilities, independent power producers, and commercial and industrial clients such as data centers and microgrids.
The company operates its corporate headquarters and a manufacturing facility in Wilsonville, Oregon, where it conducts research and development and employed 62 full-time workers as of December 31, 2025. Outside of the United States, ESS Tech has commercial activities that include product sales in Australia.
Summary of the business section of ESS Tech's latest annual report, written by StockData.
Company profile
Company
- Legal name
- ESS Tech, Inc.
- Founded
- 2011
- Headquarters
- Wilsonville, OR
- Address
- 26440 Sw Parkway Ave., Bldg. 83 97070
- Phone
- (855) 423-9920
- Website
- essinc.com
- Employees
- 62, Dec 31, 2025
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies
- Incorporated in
- Delaware
- Fiscal year ends
- December 31
- Auditor
- KPMG LLP, Portland, Oregon
Stock & identifiers
- Ticker
- GWHT
- Exchange
- OTC
- IPO date
- Sep 18, 2020
- Shares outstanding
- 33M, Aug 6, 2026
- Public float
- $13.60M, Jun 30, 2025
- Filer category
- Non-accelerated filer<br>Smaller reporting company
- Stock splits
- 1-for-15 reverse, Aug 26, 2024; 1-for-15 reverse, Aug 23, 2024
- SEC CIK
- 1819438
- CUSIP
- 26916J205
- ISIN
- US26916J2050
- LEI
- 254900IKNDBB9MBR6J59
- EIN
- 98-1550150
Executives and directors
Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years
| Name | Position | Shares owned |
|---|---|---|
| Drew P. Buckley | CEO, Director | 25,000 |
| Eric P. Dresselhuys | Chief Executive Officer, Director | 180,580 |
| Kate Eileen Suhadolnik | Chief Financial Officer | 156,830 |
| Kelly F. Goodman | SEE REMARKS | 205,220 |
| Jigish Dhirajlal Trivedi | COO | 275,000 |
| Anthony Rabb | Chief Financial Officer | 2,609,392 |
| Raffi Garabedian | Director | 53,185 |
| Rich Hossfeld | Director | 41,372 |
| Harry Quarls | Director | 68,769 |
| Alexi Wellman | Director | 52,399 |
| Sandeep Nijhawan | Director | 42,563 |
| Kyle Teamey | Director | 38,740 |
| Michael R. Niggli | Director | 101,639 |
CEO pay and shareholder return
Pay versus performance table from the proxy statement
| Fiscal year | CEO total pay | CEO pay actually paid | Other executives (avg) | Value of $100 invested | Peer group |
|---|---|---|---|---|---|
| FY2025 Eric Dresselhuys | $749.69K | -$32.97K | $488.67K | $1 | – |
| FY2025 Kelly Goodman | $883.20K | $708.85K | $488.67K | $1 | – |
| FY2024 Eric Dresselhuys | $1.07M | -$794.44K | $1.17M | $4 | – |
| FY2024 Kelly Goodman | $0 | $0 | $1.17M | $4 | – |
“Actually paid” adjusts reported pay for changes in the value of equity awards. Shareholder return assumes $100 invested at the start of the measurement period, as disclosed by the company.
Employees
Headcount reported in annual reports
“As of December 31, 2025, we employed 62 full-time employees, based primarily at our headquarters in Wilsonville, Oregon.”
Corporate history
Events identified from SEC filings