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sellWeak cluster of 2

8 Rivers Capital, LLC sold $388k of NPWR

owner at NET Power Inc.. 150,000 shares at an average of $2.59, traded Nov 20, 2025, filed Nov 24, 2025.

Warning score
36
Value
$388k
150,000 shares
Holdings after
3,100,000
-5% from before
From 52-week low
+63%
low $1.50, close $2.45
From 52-week high
-82%
high $13.29, as of Nov 20, 2025

Score components

  • Role
    10% owner
    +12
  • Trade size
    $388k at market
    +16
  • Share of holdings sold
    Sold 4.6% 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 -11.9%, 3m -26.6%, 6m -23.4%.

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 Nov 24, 2025: -51.2%SPY +17.7% · excess -68.9%

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 0001104659-25-115527, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 20, 2025SOpen-market sale
Class A Common Stockindirect: By: NPEH, LLC
-132,837$2.60$345k3,117,163Nov 24, 2025
Nov 21, 2025SOpen-market sale
Class A Common Stockindirect: By: NPEH, LLC
-17,163$2.50$43k3,100,000Nov 24, 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
NET Power Inc.
8 Rivers Capital, LLC
owner
$1.1M
435,000 shares
-13%
37Weak
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$204k
100,000 shares
-20%
37Weak
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$204k
100,000 shares
-20%
37Weak
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$177k
86,483 shares
-15%
37Weak
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$177k
86,483 shares
-15%
41Moderate
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$397k
188,517 shares
-24%
41Moderate
NPWRsell 2
NET Power Inc.
Npeh, LLC
owner
$397k
188,517 shares
-24%
40Moderate
NPWRsell 2
NET Power Inc.
8 Rivers Capital, LLC
owner
$369k
175,000 shares
-18%

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.