ESS Tech, Inc.

NYSE:GWH Stock Report

Market Cap: US$35.6m

ESS Tech Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:GWH Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
20 Feb 26SellUS$1,141Kate SuhadolnikIndividual741US$1.54
20 Feb 26SellUS$3,494Kelly GoodmanIndividual2,269US$1.54

Insider Trading Volume

Insider Buying: GWH insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of GWH?
Owner TypeNumber of SharesOwnership Percentage
Private Companies25,7560.0948%
Individual Insiders498,9871.84%
Hedge Funds1,400,0005.15%
Public Companies3,496,43012.9%
Institutions4,498,30016.6%
General Public17,254,28463.5%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 128.7%.

Top Shareholders

Top 25 shareholders own 35.92% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
8.82%
SoftBank Group Corp.
2,396,980US$3.1m0%no data
5.15%
Alyeska Investment Group, L.P.
1,400,000US$1.8m0%0.01%
4.55%
Breakthrough Energy Ventures, LLC
1,237,288US$1.6m0%no data
4.05%
Honeywell International Inc.
1,099,450US$1.4m0%no data
3.5%
Arosa Capital Management LP
950,000US$1.2m40.7%0.65%
2.58%
Pangaea Ventures Ltd.
701,975US$919.6k0%no data
1.79%
The Vanguard Group, Inc.
485,919US$636.6k83.8%no data
0.79%
Kelly Goodman
215,853US$282.8k168%no data
0.66%
Shay Capital LLC
180,000US$235.8k0%0.04%
0.51%
Michael Niggli
139,570US$182.8k0%no data
0.5%
Geode Capital Management, LLC
136,470US$178.8k140%no data
0.44%
Green Alpha Advisors, LLC
118,683US$155.5k1,020%0.12%
0.4%
Jane Street Group, LLC
109,012US$142.8k123%no data
0.33%
Pathstone Family Office, LLC
88,982US$116.6k0%no data
0.27%
GSA Capital Partners LLP
74,724US$97.9k0%0.01%
0.27%
JPMorgan Chase & Co.
74,259US$97.3k43,600%no data
0.19%
FMR LLC
52,485US$68.8k0%no data
0.19%
BlackRock, Inc.
50,370US$66.0k-5.23%no data
0.18%
XTX Markets Limited
49,609US$65.0k138%no data
0.18%
Eric Dresselhuys
49,008US$64.2k0%no data
0.17%
State Street Global Advisors, Inc.
46,975US$61.5k188%no data
0.16%
UBS Asset Management AG
44,717US$58.6k201%no data
0.094%
Harry Quarls
25,487US$33.4k0%no data
0.061%
Anthony Rabb
16,643US$21.8k0%no data
0.061%
Engineers Gate Manager LP
16,498US$21.6k0%no data

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/03/12 09:58
End of Day Share Price 2026/03/12 00:00
Earnings2025/12/31
Annual Earnings2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

ESS Tech, Inc. is covered by 3 analysts. 1 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Joseph OshaGuggenheim Securities, LLC
Pearce HammondPiper Sandler Companies
Justin ClareRoth Capital Partners