The SEC lists Net Power Inc. under CIK 0001845437, in electrical industrial apparatus. It is grouped with Information Technology companies on this site.
NPWR Form 4 activity by transaction type, last 90 days
Form 4 transaction type
Transactions
Shares
Total value
Open-market sale
38
4,430,000
$7.56M
Grant or award
5
816,881
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
NPWR insider transactions (Form 4)
83
73 Form 4 filings on record, the earliest from Oct 2, 2024, newest first. Filing history page 2 of 3.
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.10 to $2.17. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.00 to $2.1175. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.10 to $2.215. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.045 to $2.115. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.10 to $2.215. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.045 to $2.115. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.03 to $2.115. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.00 to $2.05. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.00 to $2.07. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.03 to $2.115. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.00 to $2.05. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.00 to $2.07. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.27 to $2.42. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.27 to $2.42. NPEH, LLC ("NPEH"), will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.345 to $2.385. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.35 to $2.41. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.35 to $2.42. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.345 to $2.385. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.35 to $2.41. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.35 to $2.42. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.725 to $2.755. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.77. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.535 to $2.705. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.725 to $2.755. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.77. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.535 to $2.705. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.885 to $3.015. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.885 to $3.015. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.7406. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.505. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.7406. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.505. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.76 to $2.885. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.505 to $2.715. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.76 to $2.885. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.505 to $2.715. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.05 to $4.06. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.00 to $4.01. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 03, 2025, NPEH exchanged 2,000,000 Class A Units of NET Power… Full note on SEC EDGAR
Footnote F4 (price): For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 2,000,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.05 to $4.06. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.00 to $4.01. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F3 (price): The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 03, 2025, NPEH exchanged 2,000,000 Class A Units of NET Power… Full note on SEC EDGAR
Footnote F4 (price): For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 2,000,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.05 to $4.06. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The securities reported in this Form 4 are directly held by NPEH, a limited liability company of which the Reporting Person was the indirect majority owner. On November 2, 2025, the Reporting Person sold 100% of the equity interests of 8RCH, LLC, which holds 50% of the equity… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.72 to $3.78. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.72 to $4.315. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.00 to $4.105. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.72 to $3.78. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.72 to $4.315. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.00 to $4.105. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.33 to $4.05. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.70 to $3.725. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.705 to $3.85. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.33 to $4.05. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.70 to $3.725. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.705 to $3.85. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.51 to $3.72. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.51 to $3.5775. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.225 to $3.365. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.51 to $3.72. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full… Full note on SEC EDGAR
Footnote F2 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.51 to $3.5775. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.225 to $3.365. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F1 (price): The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of… Full note on SEC EDGAR
Footnote F2 (price): For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 4,000,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.67 to $4.93. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F4 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.85 to $4.925. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F5 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.50 to $4.83. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F1 (price): The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of… Full note on SEC EDGAR
Footnote F2 (price): For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 4,000,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which… Full note on SEC EDGAR
Footnote F3 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.67 to $4.93. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Footnote F4 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.85 to $4.925. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information… Full note on SEC EDGAR
Footnote F5 (price): The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.50 to $4.83. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding… Full note on SEC EDGAR
Net Power Inc. (NPWR) had 19 insider filings in the last 90 days, with the most recent on 2026-10-08. The full record for NPWR runs to 73 Form 4 filings, the earliest from 2024-10-02. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying NPWR stock?
No insider purchases of NPWR were filed in the last 90 days.
How many insiders are selling NPWR stock?
38 insider sales of NPWR were filed in the last 90 days, totaling $7.56M.
Where can I see NPWR SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects NPWR Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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