ESS Tech Inc.
Last updated September 27, 2026
Organization details
- Legal name
- ESS Tech Inc.
- Ownership
- Public
- Status
- Active
- Headquarters country
- United States
- Ticker symbol
- GWH
- Primary stock exchange
- NYSE
Identifiers
- SEC CIK
- 0001819438
Board of directors
-
Alexi Wellman · DirectorSince 2023
-
Craig E. Evans · Director · PresidentSince 2023
-
Eric P. Dresselhuys · Director · Chief Executive OfficerSince 2023
-
Harry Quarls · DirectorSince 2023
-
Kyle Teamey · DirectorSince 2023
-
Michael R. Niggli · DirectorSince 2023
-
Raffi Garabedian · DirectorSince 2023
-
Rich Hossfeld · DirectorSince 2023
-
Sandeep Nijhawan · DirectorSince 2023
Chief executives
Eric P. Dresselhuys
· Chief Executive Officer
Dates unknown
Board connections
2 of this board's directors also sit on 3 other boards.
- via Alexi Wellman
- via Michael R. Niggli
- via Alexi Wellman
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| May 17, 2024 | Raffi Garabedian Director | Grant or award | +202,702 | — | — |
| May 17, 2024 | Michael R. Niggli Director | Grant or award | +202,702 | — | — |
| May 17, 2024 | Sandeep Nijhawan Director | Grant or award | +202,702 | — | — |
| May 17, 2024 | Harry Quarls Director | Grant or award | +202,702 | — | — |
| May 17, 2024 | Kyle Teamey Director | Grant or award | +202,702 | — | — |
| May 17, 2024 | Alexi Wellman Director | Grant or award | +202,702 | — | — |
| May 17, 2024 | Rich Hossfeld Director | Grant or award | +202,702 | — | — |
| May 15, 2024 | Rich Hossfeld Director | Sold back to the company | −135,373 | — | — |
| May 14, 2024 | Kyle Teamey Director | Open-market purchase | +1,250 | $0.79 | $988 |
| May 10, 2024 | Harry Quarls Director | Open-market purchase | +57,310 | $0.79 | $45,275 |
| May 9, 2024 | Harry Quarls Director | Open-market purchase | +42,690 | $0.84 | $35,860 |
| Mar 15, 2024 | Rich Hossfeld Director | Open-market purchase | +200 | $0.73 | $146 |
| Mar 15, 2024 | Rich Hossfeld Director | Open-market purchase | +2,300 | $0.73 | $1,679 |
| Mar 7, 2024 | Eric P. Dresselhuys Director, Officer (Chief Executive Officer) | Grant or award | +622,771 | — | — |
| Feb 15, 2024 | Rabb Anthony Officer (Chief Financial Officer) | Grant or award | +550,000 | — | — |
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