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GWH · Ess Tech, Inc.
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TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475
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GWH

ESS Tech, Inc.
SEMICONDUCTORS & ELECTRONICS · MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES · CIK 0001819438
C-SUITE BUYING · 1☆ WATCH
INSIDER NET · 180D
$13.8K
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
1
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
21
13F, latest reported quarter
REVENUE GROWTH
-74.9%
XBRL, annual
NET MARGIN
-4007.6%
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net +$13.8K over 180 days
-$3.8K over 90 days
more than 89% of Semiconductors & Electronics
CONGRESS
no member of Congress has reported trading it
FUNDS
21 funds added or opened last quarter
below 81% of Semiconductors & Electronics
REVENUE
-74.9% year over year
below 98% of Semiconductors & Electronics
MARGIN
-4007.6% net margin
the lowest in Semiconductors & Electronics
BUYBACKS
no share repurchases reported
SHORT
6.6% of shares outstanding short · 3.3 days to cover · settled 2026-07-31
more than 66% of Semiconductors & Electronics
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN -75.9%
-75.9%12M
-77%+131%+339%+546%2025-092025-102025-122026-032026-052026-072026-09 2026-06-04 · Buckley Drew P bought $25.8K2026-02-20 · Goodman Kelly F. sold $3.5K2026-05-22 · Goodman Kelly F. sold $2.6K2026-05-21 · Goodman Kelly F. sold $2.3K2026-08-21 · Goodman Kelly F. sold $2.2K2026-05-22 · Suhadolnik Kate Eileen sold $1.8K2026-05-21 · Suhadolnik Kate Eileen sold $1.6K2026-08-21 · Suhadolnik Kate Eileen sold $1.6K2026-02-20 · Suhadolnik Kate Eileen sold $1.1K
INSIDER BUYINSIDER SELL
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders are net buyers of their own stock.
The record shows a net $13.8K bought by insiders over 180 days, 21 funds added last quarter. Every figure is a federal filing, dated the day it became public.
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, ESS Tech, Inc. insiders bought a net $13.8K of stock across 48 Form 4 purchases and sales, with 1 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-05.

INSIDER
FILED
SHARES
VALUE
Goodman Kelly F.
SEE REMARKS
SELL
2026-08-21
5,400.0
$2.2K
Suhadolnik Kate Eileen
Chief Financial Officer
SELL
2026-08-21
3,927.0
$1.6K
Buckley Drew P
CEO
BUY
2026-06-04
25,000.0
$25.8K
Suhadolnik Kate Eileen
Chief Financial Officer
SELL
2026-05-22
1,922.0
$1.8K
Goodman Kelly F.
SEE REMARKS
SELL
2026-05-22
2,751.0
$2.6K
48 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 43 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders
13F · holdings as of the latest quarter funds have reported
SOFTBANK GROUP CORP.
2,396,980.0 sh
$2.3M
Alyeska Investment Group, L.P.
1,400,000.0 sh
$1.3M
VANGUARD CAPITAL MANAGEMENT LLC
638,920.0 sh
$607.0K
UBS Group AG
602,607.0 sh
$572.5K
HEIGHTS CAPITAL MANAGEMENT, INC
1,059,342.0 sh
$524.0K
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
FORM 144
No planned-sale notices
No insider has notified an intent to sell. This is the panel to watch after a run-up.
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
Ultra-Small Company Market Fund
$23.4K POSITION · AS OF 2026-03-31
0.0%
VANGUARD EXTENDED MARKET INDEX FUND
$317.7K POSITION · AS OF 2026-03-31
0.0%
Select Technology Portfolio
$83.5K POSITION · AS OF 2026-02-28
0.0%
Fidelity Extended Market Index Fund
$115.2K POSITION · AS OF 2026-02-28
0.0%
State Street Balanced Index Fund
$1.1K POSITION · AS OF 2026-03-31
0.0%
Fidelity Series Total Market Index Fund
$37.2K POSITION · AS OF 2026-02-28
0.0%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
REVENUE$1.6M$6.3M$7.5M$894.0K
GROSS PROFIT$-27.7M$-45.4M$-13.0M$894.0K
OPERATING INCOME$-57.4M$-89.8M$-85.9M$-105.5M
NET INCOME$63.4M$86.2M$-77.6M$-78.0M
EPS (DILUTED)-4.34-7.32-7.27-0.51
OPERATING CASH FLOW$-50.3M$-72.2M$-54.9M$-81.6M
CASH$14.5M$13.3M$20.2M$34.8M
LONG-TERM DEBT$0$315.0K
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-05 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

SEC FORM 4FORM 13F 13D/GFORM 144XBRL STOCK ACTCONTRACTSFEC CFPBNRC
© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-05 ALL SYSTEMS LIVE FOR MACHINES →