DOSSIER · 13F Holders · Q2 2026
GWH

ESS TECH INC

51 institutions still hold ESS TECH INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 26916J205·51 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$7M
visible holders
Holders
51
filers reporting
Concentration
32.22%
SOFTBANK GROUP CORP. #1
top holder share
AI Holders Summary · Q2 2026

51 institutions reported GWH in Q2 2026. SOFTBANK GROUP CORP. leads at 32.2% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
SOFTBANK GROUP CORP.
CIK 0001065521
$2M2.4M0.01%Q2 2026
02
Alyeska Investment Group, L.P.
CIK 0001453072
$1M1.4M0.00%Q2 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$607K639K0.00%Q2 2026
04
UBS Group AG
CIK 0001610520
$572K603K0.00%Q2 2026
05
Arosa Capital Management LP
CIK 0001596053
$523K550K0.09%Q2 2026
06
HEIGHTS CAPITAL MANAGEMENT, INC
CIK 0001081698
$521K549K0.12%Q2 2026
07
Shay Capital LLC
CIK 0001723643
$200K210K0.01%Q2 2026
08
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$200K210K0.00%Q2 2026
09
GSA CAPITAL PARTNERS LLP
CIK 0001362033
$170K146K0.01%Q1 2026
10
BlackRock, Inc.
CIK 0002012383
$127K134K0.00%Q2 2026
11
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$123K130K0.00%Q2 2026
12
Green Alpha Advisors, LLC
CIK 0001439207
$110K116K0.07%Q2 2026
13
Pathstone Holdings, LLC
CIK 0002011612
$85K89K0.00%Q2 2026
14
FMR LLC
CIK 0000315066
$50K52K0.00%Q2 2026
15
NORTHERN TRUST CORP
CIK 0000073124· Index
$45K48K0.00%Q2 2026
16
STATE STREET CORP
CIK 0000093751
$45K47K0.00%Q2 2026
17
PKS Advisory Services, LLC
CIK 0001605401
$23K24K0.00%Q2 2026
18
Virtu Financial LLC
CIK 0001533964· Market maker
$22K19K0.00%Q1 2026
19
JPMORGAN CHASE & CO
CIK 0000019617
$20K20K0.00%Q2 2026
20
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$19K20K0.00%Q2 2026
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Insiders at ESS TECH INC
Goodman Kelly F.Buckley Drew PQuarls HarryWellman AlexiGarabedian RaffiHossfeld RichNijhawan SandeepSuhadolnik Kate Eileen