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sellWeak cluster of 2

Npeh, LLC sold $376k of NPWR

owner at NET Power Inc.. 170,000 shares at an average of $2.21, traded Dec 24, 2025, filed Dec 29, 2025.

Warning score
36
Value
$376k
170,000 shares
Holdings after
2,050,000
-8% from before
From 52-week low
+48%
low $1.50, close $2.22
From 52-week high
-80%
high $11.24, as of Dec 24, 2025

Score components

  • Role
    10% owner
    +12
  • Trade size
    $376k at market
    +16
  • Share of holdings sold
    Sold 7.7% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +4.5%, 3m -33.5%, 6m -25.4%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

NPWROct 9, 2026 · close 1.23
Since filing Dec 29, 2025: -45.1%SPY +14.0% · excess -59.1%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001104659-25-124958, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 24, 2025SOpen-market sale
Class A Common Stock
-170,000$2.21$376k2,050,000Dec 29, 2025

Related signals

Other insiders at NET Power Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
47Moderate
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$470k
250,000 shares
-25%
47Moderate
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$470k
250,000 shares
-25%
42Moderate
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$463k
242,900 shares
-20%
42Moderate
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$463k
242,900 shares
-20%
55Moderate
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$1.4M
757,100 shares
-38%
55Moderate
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$1.4M
757,100 shares
-38%
33Weak
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$234k
150,745 shares
-7%
33Weak
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$234k
150,745 shares
-7%
43Moderate
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$531k
349,255 shares
-14%
43Moderate
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$531k
349,255 shares
-14%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Npeh, LLC sold $376k of NPWR | InsiderTell