8 Rivers Capital, LLC sold $890k of NPWR
owner at NET Power Inc.. 310,000 shares at an average of $2.87, traded Dec 4, 2025, filed Dec 8, 2025.
Score components
- +12Role10% owner
- +23Trade size$890k at market
- +5Share of holdings soldSold 11% of holdings
- +8Cluster2 insiders selling within 14 days
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 -1.5%, 3m -29.5%, 6m -40.0%.
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.
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 0001104659-25-119359, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 4, 2025 | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -65,000 | $2.94 | $191k | 2,835,000 | Dec 8, 2025 |
| Dec 5, 2025 | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -105,000 | $2.91 | $305k | 2,730,000 | Dec 8, 2025 |
| Dec 8, 2025 | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -140,000 | $2.81 | $393k | 2,590,000 | Dec 8, 2025 |
Related signals
Other insiders at NET Power Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 47Moderate | NET Power Inc. | 8 Rivers Capital, LLC owner | $470k 250,000 shares | -25% | |
| 47Moderate | NET Power Inc. | Npeh, LLC owner | $470k 250,000 shares | -25% | |
| 42Moderate | NET Power Inc. | 8 Rivers Capital, LLC owner | $463k 242,900 shares | -20% | |
| 42Moderate | NET Power Inc. | Npeh, LLC owner | $463k 242,900 shares | -20% | |
| 55Moderate | NET Power Inc. | 8 Rivers Capital, LLC owner | $1.4M 757,100 shares | -38% | |
| 55Moderate | NET Power Inc. | Npeh, LLC owner | $1.4M 757,100 shares | -38% | |
| 33Weak | NET Power Inc. | 8 Rivers Capital, LLC owner | $234k 150,745 shares | -7% | |
| 33Weak | NET Power Inc. | Npeh, LLC owner | $234k 150,745 shares | -7% | |
| 43Moderate | NET Power Inc. | 8 Rivers Capital, LLC owner | $531k 349,255 shares | -14% | |
| 43Moderate | 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.