Companies / ESS Tech, Inc.

ESS Tech, Inc.

NYSE: GWHCIK 1819438WILSONVILLE, OR

Financials · FY2025

Revenue$1.58M
Net income$-63.44M
Total debt$0
Cash$10.85M
Diluted EPS$-4.34
Shares outstanding33.0M

Ownership

33.0M shares outstanding · as of Aug 6, 2026
1.2%Insiders
Ownership
Insiders1.15%380,267
10%+ / strategic4.25%1,400,000
Institutions18.72%6,172,851
Public float75.88%25,016,907

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 3

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Insider% of sharesShares
Goodman Kelly F.SEE REMARKS
0.65%215,853
Suhadolnik Kate EileenChief Financial Officer
0.50%164,414
Buckley Drew PCEOCEO · Director
——

Institutional holders 58

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HolderValue% of shares
SoftBank Group Corp.$2.80M7.27%
Alyeska Investment Group, L.P.$2.63M4.25%
Arosa Capital Management LP$1.79M2.88%
Heights Capital Management, Inc$1.13M2.92%
Vanguard Group Inc$913.5K1.47%
Shay Capital LLC$338.4K0.55%
Geode Capital Management, LLC$261.6K0.68%
Green Alpha Advisors, LLC$223.1K0.36%
Jane Street Group, LLC$204.9K0.33%
Pathstone Holdings, LLC$167.3K0.27%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Feb 20, 2026Goodman Kelly F.
Executive
SellCommon Stock$3.5K-2K
-1.04%
215,853
0.65% of shares
low
Feb 20, 2026Suhadolnik Kate Eileen
Executive
SellCommon Stock$1.1K-741
-0.45%
164,414
0.50% of shares
low
Feb 13, 2026Suhadolnik Kate Eileen
Executive
GrantCommon Stock$0+138K
+497.20%
165,155
0.50% of shares
low
Feb 13, 2026Goodman Kelly F.
Executive
GrantCommon Stock$0+138K
+170.55%
218,122
0.66% of shares
low
Feb 13, 2026Suhadolnik Kate Eileen
Executive
GrantStock Option (right to buy)—+138K
137,500
0.42% of shares
low
Feb 13, 2026Goodman Kelly F.
Executive
GrantStock Option (right to buy)—+138K
137,500
0.42% of shares
low
Jan 28, 2026Buckley Drew P
CEO
GrantStock Option (right to buy)—+550K
550,000
1.67% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Alyeska Investment Group, L.P.Passive13G—1,400,000—

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
GWHCommon StockEquity26916J205BBG00Y4B6KS5