8 Rivers Capital, LLC is 10% Owner at NET Power Inc. (NPWR). They have made 17 open-market trades across 1 company since 2024, most recently 2026-09-09.
CIK 0001981100
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| NPWR | 750,000 | $765K |
Shares reported on the most recent Form 4, priced at the 2026-09-10 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 53% | 65% | 60% |
| Avg Move | -0.3% | -2.6% | -1.1% |
| Scored | 17 | 17 | 10 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| NPWR | SELL | 2026-09-08 | 2026-09-10 | $1.88 | $470K | -1.4% | -33.1% | — |
| NPWR | SELL | 2026-08-25 | 2026-08-27 | $1.91 | $463K | -2.9% | -18.1% | — |
| NPWR | SELL | 2026-08-12 | 2026-08-14 | $1.84 | $1.4M | -5.7% | -5.7% | — |
| NPWR | SELL | 2026-08-07 | 2026-08-11 | $1.55 | $234K | +4.6% | +11.3% | — |
| NPWR | SELL | 2026-08-04 | 2026-08-06 | $1.52 | $531K | +9.7% | +25.3% | — |
| NPWR | SELL | 2026-07-28 | 2026-07-30 | $1.43 | $367K | +8.4% | +20.2% | — |
| NPWR | SELL | 2026-07-21 | 2026-07-23 | $1.52 | $319K | +5.4% | +34.7% | — |
| NPWR | SELL | 2026-05-12 | 2026-05-14 | $2.44 | $1.1M | -7.4% | -19.4% | -24.4% |
| NPWR | SELL | 2026-02-19 | 2026-02-23 | $2.10 | $396K | +9.8% | -4.4% | +11.5% |
| NPWR | SELL | 2026-01-29 | 2026-02-02 | $2.35 | $129K | -12.0% | -13.7% | -15.4% |
| NPWR | SELL | 2026-01-14 | 2026-01-16 | $2.64 | $1.3M | -4.0% | -15.2% | -35.6% |
| NPWR | SELL | 2025-12-22 | 2025-12-23 | $2.26 | $226K | +27.0% | +16.7% | -19.8% |
| NPWR | SELL | 2025-11-17 | 2025-11-19 | $2.81 | $952K | +0.4% | -14.1% | -21.5% |
| NPWR | SELL | 2025-10-31 | 2025-11-04 | $4.03 | $107K | -20.3% | -17.5% | -33.9% |
| NPWR | SELL | 2024-09-12 | 2024-09-16 | $7.07 | $286K | +0.7% | +1.1% | +40.2% |
| NPWR | SELL | 2024-09-09 | 2024-09-11 | $7.52 | $612K | -2.7% | -1.3% | +50.5% |
| NPWR | SELL | 2024-09-04 | 2024-09-06 | $7.99 | $1.9M | -14.3% | -10.7% | +37.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.