MarketPeel
Insider Trading Intelligence
KG

Kelly F. Goodman

GWH
INTERIM CEO · ESS TECH, INC. · CIK 0002056453
FILING MIX · LIFETIME36%/64%
BUYS
4
SELLS
7
TOTAL VALUE
$37.5K
COMPANIES
1
ACTIVE SINCE
Feb 2025
HOLDINGS NOW
210,620
AVG SELL PX
$1.88
TRADE KIND
SHOWING 11 / 11
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 3 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Kelly F. Goodman, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d1+0.00%+3.25%-0.50%+3.75%+3.75%
14d1+100.00%-15.58%-2.47%-13.11%-13.11%
30d1+100.00%-23.38%-4.94%-18.44%-18.44%
60d1+100.00%-27.27%+2.13%-29.40%-29.40%
90d1+100.00%-44.00%
180d1(1 pending)
1y1(1 pending)
2y1(1 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
GWH · 210,620 shares · as of May 22, 2026
054,531109,061163,592218,1222026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2025
2025
2026
2026
FLOW · 4 buys / 7 sellsCOVERAGE · 6 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GWH
ESS TECH, INC.
SALE
SEE REMARKS
2,751$0.93$2.6K210,620May 22, 2026May 26, 2026View →
GWH
ESS TECH, INC.
SALE
SEE REMARKS
2,482$0.92$2.3K213,371May 21, 2026May 26, 2026View →
GWH
ESS TECH, INC.
SALE
SEE REMARKS
2,269$1.54$3.5K215,853Feb 20, 2026Feb 26, 2026View →
GWH
ESS TECH, INC.
PURCHASEGRANT
Stock grant
137,500137,500Feb 13, 2026Feb 26, 2026View →
GWH
ESS TECH, INC.
PURCHASEGRANT
Stock grant
137,500218,122Feb 13, 2026Feb 26, 2026View →
GWH
ESS TECH, INC.
SALE
Interim CEO
4,513$2.40$10.8K80,622Nov 20, 2025Nov 21, 2025View →
GWH
ESS TECH, INC.
SALE
Interim CEO
4,326$1.61$7.0K85,135Aug 20, 2025Aug 21, 2025View →
GWH
ESS TECH, INC.
SALE
Interim CEO
2,164$1.96$4.2K89,461May 20, 2025May 22, 2025View →
GWH
ESS TECH, INC.
PURCHASEGRANT
Stock grant
36,93091,625Apr 13, 2025Apr 15, 2025View →
GWH
ESS TECH, INC.
SALE
Interim CEO
1,489$4.81$7.2K54,695Feb 20, 2025Apr 4, 2025View →
GWH
ESS TECH, INC.
PURCHASEGRANT
Stock grant
10,00056,184Feb 10, 2025Apr 4, 2025View →
Other insiders · GWH
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About this filer
CIK 0002056453
ROLE
Interim CEO
PRIMARY
GWH
COMPANIES
1
ACTIVE SINCE
Feb 2025
MARKETPEEL · /INSIDER/0002056453DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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