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ESS Tech Ownership | Who Owns ESS Tech?

OverviewForecastRevenueFinancialsChartTranscripts

ESS Tech Ownership Summary

ESS Tech is owned by 21.58% institutional investors, 7.88% insiders, and 70.54% retail investors. Softbank group is the largest institutional shareholder, holding 16.42% of GWH shares. Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund, with 1.32% of its assets in ESS Tech shares.

GWH Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockESS Tech21.58%7.88%70.54%
SectorIndustrials Stocks 68.68%16.25%15.07%
IndustryElectrical Equipment Stocks55.37%15.63%29.00%
IdeaEnergy Storage Stocks List43.68%14.68%41.64%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Softbank group2.40M16.42%$2.80M
Alyeska investment group1.40M9.59%$1.64M
Heights capital management963.50K6.60%$1.13M
Arosa capital management lp910.00K6.23%$1.06M
Vanguard group485.92K3.43%$913.53K
Geode capital management223.56K1.53%$261.58K
Shay capital180.00K1.23%$210.60K
Ubs group149.28K1.02%$174.66K
Gsa capital partners llp145.58K1.00%$170.00K
Green alpha advisors114.58K0.78%$134.06K

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Heights capital management963.50K0.31%$1.13M
Arosa capital management lp910.00K0.16%$1.06M
Green alpha advisors114.58K0.13%$134.06K
Softbank group2.40M0.02%$2.80M
Shay capital180.00K0.02%$210.60K
Gsa capital partners llp145.58K0.01%$170.00K
Alyeska investment group1.40M0.00%$1.64M
Pks advisory services24.00K0.00%$22.80K
Busey wealth management117.40K0.00%$19.96K
Bridgeway capital management20.00K0.00%$23.40K

Top Buyers

HolderShares% AssetsChange
Heights capital management963.50K0.31%963.50K
Goldman sachs group636.48K0.00%475.90K
Vanguard group485.92K-221.59K
Busey wealth management117.40K0.00%117.40K
Ubs group149.28K-104.56K

Top Sellers

HolderShares% AssetsChange
Blackrock835.49K--4.80M
Baird financial group---367.52K
Nuveen asset management---276.60K
Bank of new york mellon---259.81K
Y-intercept (hong kong)---208.46K

New Positions

HolderShares% AssetsChangeValue
Heights capital management963.50K0.31%963.50K$1.13M
Busey wealth management117.40K0.00%117.40K$19.96K
Aqr capital management102.26K0.00%102.26K$83.64K
Vanguard fiduciary trust69.40K-69.40K$81.20K
Russell investments group22.87K-22.87K$18.70K

Sold Out

HolderChange
Newsquare capital-5.00
Corecap advisors-6.00
Groupe la francaise-6.00
Financial gravity asset management-12.00
Navalign-13.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 202645-10.00%7,300,414-4.08%213.20%17-22.73%814.29%
Mar 31, 202620-62.26%1,236,615-80.54%80.42%8-75.76%4-20.00%
Dec 31, 202534-22.73%1,266,912-66.17%80.96%21-433.33%
Sep 30, 202541-8.89%3,696,84422.61%304.80%2033.33%3-62.50%
Jun 30, 2025464.55%3,022,717-10.23%253.21%16220.00%8-38.46%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Morn Total Stk Mkt Idx Investor367.38K1.32%4.20K
Vanguard Total Stock Mkt Idx Inv367.38K1.32%4.20K
Vanguard Institutional Extnd Mkt Idx Tr271.54K1.21%-
Vanguard MStar Total Stk Mkt Idx Invest367.38K0.91%-
Abante Quant Value FI262.18K0.65%199.37K
Fidelity Extended Market Index114.53K0.28%-615.00
Fidelity Select Technology52.48K0.19%-
iShares Micro-Cap ETF74.65K0.19%-515.00
NT R2000 Value Index Fund - NL279.54K0.16%5.86K
NT R2000 Index Fund - NL224.52K0.13%-9.51K

Recent Insider Transactions

DateNameRoleActivityValue
Aug 21, 2026Suhadolnik Kate Eileen Chief Financial OfficerSell$1.58K
Aug 21, 2026Goodman Kelly F. SEE REMARKSSell$2.17K
Jun 04, 2026Buckley Drew P CEOBuy$25.66K
May 21, 2026Suhadolnik Kate Eileen Chief Financial OfficerSell$1.59K
May 22, 2026Suhadolnik Kate Eileen Chief Financial OfficerSell$1.80K

Insider Transactions Trends

DateBuySell
2026 Q1--
2025 Q4--
2025 Q3--
2025 Q2--
2025 Q1--

GWH Ownership FAQ

Who Owns ESS Tech?

ESS Tech shareholders are primarily institutional investors at 21.58%, followed by 7.88% insiders and 70.54% retail investors. The average institutional ownership in ESS Tech's industry, Electrical Equipment Stocks, is 55.37%, which ESS Tech falls below.

Who owns the most shares of ESS Tech?

ESS Tech’s largest shareholders are Softbank group (2.4M shares, 16.42%), Alyeska investment group (1.4M shares, 9.59%), and Heights capital management (963.5K shares, 6.60%). Together, they hold 32.60% of ESS Tech’s total shares outstanding.

Does Blackrock own ESS Tech?

BlackRock is not among the top 10 institutional shareholders of ESS Tech.

Who is ESS Tech’s biggest shareholder by percentage of total assets invested?

Heights capital management is ESS Tech’s biggest shareholder by percentage of total assets invested, with 0.31% of its assets in 963.5K ESS Tech shares, valued at 1.13M$.

Who is the top mutual fund holder of ESS Tech shares?

Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund holder of ESS Tech shares, with 1.32% of its total shares outstanding invested in 367.38K ESS Tech shares.

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