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sellModerate cluster of 2

Npeh, LLC sold $470k of NPWR

owner at Net Power Inc.. 250,000 shares at an average of $1.88, traded Sep 8, 2026, filed Sep 10, 2026.

Warning score
47
Value
$470k
250,000 shares
Holdings after
750,000
-25% from before
From 52-week low
+40%
low $1.36, close $1.90
From 52-week high
-61%
high $4.85, as of Sep 8, 2026

Score components

  • Role
    10% owner
    +12
  • Trade size
    $470k at market
    +17
  • Share of holdings sold
    Sold 25% of holdings
    +10
  • 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.

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 Sep 10, 2026: -32.4%SPY +3.0% · excess -35.4%

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 0001104659-26-106786, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 8, 2026SOpen-market sale
Class A Common Stock
-100,000$1.94$194k900,00033 d ago
Sep 9, 2026SOpen-market sale
Class A Common Stock
-150,000$1.84$276k750,00033 d ago

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%
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%
35Weak
NPWRsell 2
Net Power Inc.
8 Rivers Capital, LLC
owner
$367k
255,858 shares
-9%

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 $470k of NPWR | InsiderTell