DOSSIER · 13F Holders · Q1 2026
GWH

ESS TECH INC

51 institutions still hold ESS TECH INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 26916J205·51 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$10M
visible holders
Holders
51
filers reporting
Concentration
28.39%
SOFTBANK GROUP CORP. #1
top holder share
AI Holders Summary · Q1 2026

51 institutions reported GWH in Q1 2026. SOFTBANK GROUP CORP. leads at 28.4% 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
$3M2.4M0.02%Q1 2026
02
Alyeska Investment Group, L.P.
CIK 0001453072
$3M1.4M0.01%Q4 2025
03
HEIGHTS CAPITAL MANAGEMENT, INC
CIK 0001081698
$1M963K0.31%Q1 2026
04
Arosa Capital Management LP
CIK 0001596053
$1M910K0.16%Q1 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$743K635K0.00%Q1 2026
06
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$262K224K0.00%Q1 2026
07
Shay Capital LLC
CIK 0001723643
$211K180K0.02%Q1 2026
08
UBS Group AG
CIK 0001610520
$175K149K0.00%Q1 2026
09
GSA CAPITAL PARTNERS LLP
CIK 0001362033
$170K146K0.01%Q1 2026
10
Green Alpha Advisors, LLC
CIK 0001439207
$134K115K0.13%Q1 2026
11
BlackRock, Inc.
CIK 0002012383
$127K134K0.00%Q2 2026
12
Pathstone Holdings, LLC
CIK 0002011612
$102K87K0.00%Q1 2026
13
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$81K69K0.00%Q1 2026
14
FMR LLC
CIK 0000315066
$61K52K0.00%Q1 2026
15
STATE STREET CORP
CIK 0000093751
$45K47K0.00%Q2 2026
16
NORTHERN TRUST CORP
CIK 0000073124· Index
$37K31K0.00%Q1 2026
17
JPMORGAN CHASE & CO
CIK 0000019617
$35K32K0.00%Q1 2026
18
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$23K20K0.00%Q1 2026
19
PKS Advisory Services, LLC
CIK 0001605401
$23K24K0.00%Q2 2026
20
Virtu Financial LLC
CIK 0001533964· Market maker
$22K19K0.00%Q1 2026
Page 1 of 3
31 more holders available. Log in →
Insiders at ESS TECH INC
Buckley Drew PQuarls HarryWellman AlexiGarabedian RaffiHossfeld RichNijhawan SandeepGoodman Kelly F.Suhadolnik Kate Eileen