Net Power Inc. (NPWR) has 18 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 14 sales totalling $7.6M. Most recent filing: Sept. 10, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
|---|---|---|---|---|---|---|
| Sept. 10, 2026 filed Sept. 8, 2026 | 8 Rivers Capital, LLC 10% Owner | −$469,595 | 250,000 | −25% | No | |
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| Sept. 10, 2026 filed Sept. 8, 2026 | NPEH, LLC 10% Owner | −$469,595 | 250,000 | −25% | No | |
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| Aug. 31, 2026 filed June 3, 2026 | PETERSON CAROL R. Director | $0 | 71,770 | +69% | No | |
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| Aug. 31, 2026 filed June 3, 2026 | Alexander Ralph Director | $0 | 71,770 | +69% | No | |
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| Aug. 31, 2026 filed June 3, 2026 | Kelliher Joseph T Director | $0 | 71,770 | +69% | No | |
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Showing the 5 most recent of 18 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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