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Livermore
ZHEN

ESS Tech, Inc.

GWH
Exchange
NYSE
Industry
Miscellaneous Electrical Machinery, Equipment & Supplies
SEC CIK
0001819438

In the last 90 days, ESS Tech, Inc. insiders filed 0 open-market purchases and 2 sales; 47 institutions reported holding it in 13F filings for Q2 2026, worth $6.94M in total; no superinvestor holds it.

Other share classesGWHWW

13F holders, Q4 2025

Institutional positions in ESS Tech, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
55
+9 vs. Q3 2025
Shares held
6.36M
+2.61M (+69.7%) vs. Q3 2025
Total value
$11.9M
+$6.26M (+109.9%) vs. Q3 2025
New holders
18
16 more added
Sold out
9
5 more reduced

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting GWH on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 55 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 4 institutionsQ4 2021: 58 institutionsQ1 2022: 75 institutionsQ2 2022: 97 institutionsQ3 2022: 94 institutionsQ4 2022: 107 institutionsQ1 2023: 102 institutionsQ2 2023: 91 institutionsQ3 2023: 101 institutionsQ4 2023: 108 institutionsQ1 2024: 104 institutionsQ2 2024: 103 institutionsQ3 2024: 50 institutionsQ4 2024: 56 institutionsQ1 2025: 45 institutionsQ2 2025: 49 institutionsQ3 2025: 46 institutionsQ4 2025: 55 institutionsQ1 2026: 51 institutionsQ2 2026: 47 institutions
Value heldQ4 2025: $11.9M
Q1 2021: $0Q2 2021: $0Q3 2021: $9.04MQ4 2021: $622.1MQ1 2022: $331.4MQ2 2022: $175.7MQ3 2022: $257.8MQ4 2022: $156.2MQ1 2023: $88.9MQ2 2023: $86.9MQ3 2023: $114.0MQ4 2023: $69.4MQ1 2024: $40.9MQ2 2024: $42.3MQ3 2024: $20.7MQ4 2024: $20.5MQ1 2025: $11.0MQ2 2025: $4.02MQ3 2025: $5.69MQ4 2025: $11.9MQ1 2026: $8.90MQ2 2026: $6.94M
Institutions holding GWH and their total value by quarter
QuarterHoldersValue
Q2 202647$6.94M
Q1 202651$8.90M
Q4 202555$11.9M
Q3 202546$5.69M
Q2 202549$4.02M
Q1 202545$11.0M
Q4 202456$20.5M
Q3 202450$20.7M
Q2 2024103$42.3M
Q1 2024104$40.9M
Q4 2023108$69.4M
Q3 2023101$114.0M
Q2 202391$86.9M
Q1 2023102$88.9M
Q4 2022107$156.2M
Q3 202294$257.8M
Q2 202297$175.7M
Q1 202275$331.4M
Q4 202158$622.1M
Q3 20214$9.04M
Q2 20210$0
Q1 20210$0

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding ESS Tech, Inc.; share changes are against Q3 2025.

Institutions holding GWH in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Softbank Group Corp2,396,980$4.51M0.03%00.0%Unchanged
Alyeska Investment Group, L.P.1,400,000$2.63M0.01%+1,400,000New
Arosa Capital Management LP950,000$1.79M1.15%+274,583+40.7%Added
Vanguard Group Inc485,919$913.5K0.00%+221,587+83.8%Added
Shay Capital LLC180,000$338.4K0.05%+180,000New
Geode Capital Management, LLC136,470$256.6K0.00%+79,657+140.2%Added
Green Alpha Advisors, LLC118,683$223.1K0.20%+108,055+1,016.7%Added
Jane Street Group, LLC109,012$204.9K0.00%+60,054+122.7%Added
Pathstone Holdings, LLC88,982$167.3K0.00%+88,982New
Gsa Capital Partners LLP74,724$140.0K0.01%+74,724New
JPMorgan Chase & Co74,259$139.6K0.00%+74,089+43,581.8%Added
FMR LLC52,486$98.7K0.00%+10.0%Added
BlackRock, Inc.50,370$94.7K0.00%−2,779−5.2%Reduced
XTX Topco Ltd49,609$93.3K0.00%+28,749+137.8%Added
State Street Corp46,975$88.3K0.00%+30,671+188.1%Added
UBS Group AG44,717$84.1K0.00%+29,864+201.1%Added
Engineers Gate Manager LP16,498$31.0K0.00%+16,498New
LPL Financial LLC14,237$26.8K0.00%+14,237New
Northern Trust Corp10,588$19.9K0.00%00.0%Unchanged
Millennium Management LLC10,111$19.0K0.00%+10,111New
Bridgeway Capital Management, LLC10,000$18.8K0.00%+10,000New
Primoris Wealth Advisors, LLC10,000$18.8K0.01%+10,000New
Advisor Group Holdings, Inc.6,106$11.5K0.00%+3,842+169.7%Added
Golden State Wealth Management, LLC2,707$5.09K0.00%−13−0.5%Reduced
Bank of America Corp2,703$5.08K0.00%+150+5.9%Added
CWM, LLC2,672$5.00K0.00%+6+0.2%Added
Tower Research Capital LLC (TRC)2,494$4.69K0.00%−2,154−46.3%Reduced
The PNC Financial Services Group, Inc.2,443$4.59K0.00%00.0%Unchanged
Morgan Stanley2,087$3.92K0.00%−3,130−60.0%Reduced
National Bank of Canada832$1.52K0.00%00.0%Unchanged
Missouri Trust & Investment Co633$1.19K0.00%00.0%Unchanged
SBI Securities Co., Ltd.571$1.07K0.00%+488+588.0%Added
Group One Trading, L.P.409$7690.00%00.0%Unchanged
Global Retirement Partners, LLC366$6880.00%00.0%Unchanged
Parallel Advisors, LLC300$5640.00%00.0%Unchanged
Parkside Financial Bank & Trust233$4390.00%00.0%Unchanged
Smartleaf Asset Management LLC200$3660.00%+200New
BNP Paribas Arbitrage, SA163$3060.00%−284−63.5%Reduced
Fortitude Family Office, LLC120$2260.00%+120New
McGuire Capital Advisors Inc81$1520.00%+81New
GWM Advisors LLC72$1350.00%00.0%Unchanged
Archer Investment Corp68$1280.00%00.0%Unchanged
Wolff Wiese Magana LLC66$1250.00%00.0%Unchanged
Wells Fargo & Company45$850.00%+35+350.0%Added
MTM Investment Management, LLC40$750.00%00.0%Unchanged
Harbor Investment Advisory, LLC33$620.00%00.0%Unchanged
Jones Financial Companies LLLP13$240.00%00.0%Unchanged
Navalign, LLC13$240.00%+13New
TD Waterhouse Canada Inc.13$240.00%+13New
Signature Equity Partners, LLC10$190.00%+10New
Hilton Head Capital Partners, LLC8$150.00%+8New
Pinnacle Wealth Planning Services, Inc.6$110.00%+6New
Citigroup Inc1$20.00%+1New
Royal Bank of Canada105$00.00%+4+4.0%Added
Coston, McIsaac & Partners3$00.00%00.0%Unchanged
Yorkville Advisors Global, LP0$00.00%−48,374−100.0%Sold out
Renaissance Technologies LLC0$00.00%−27,560−100.0%Sold out
Citadel Advisors LLC0$00.00%−19,773−100.0%Sold out
Barclays PLC0$00.00%−1,670−100.0%Sold out
Allworth Financial LP0$00.00%−166−100.0%Sold out
Clear Street Group Inc.0$00.00%−126−100.0%Sold out
Principal Securities, Inc.0$00.00%−108−100.0%Sold out
Mather Group, LLC.0$00.00%−20−100.0%Sold out
Groupe la Francaise0$00.00%−6−100.0%Sold out