Net Power Inc. SEC filings NPWR
Net Power Inc. has 350 filings in SEC EDGAR's recent list, going back to Mar 10, 2021. Its latest annual report, Form ARS, was filed on Apr 23, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 22, 2026 (material agreement). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Material agreement
|
Oct 22, 2026 | Oct 16, 2026 |
| 8-K |
Current report
Material agreement
|
Sep 11, 2026 | Sep 8, 2026 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Regulation FD disclosure
|
Sep 3, 2026 | Aug 31, 2026 |
| 10-Q | Quarterly report | Aug 13, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 13, 2026 | Aug 13, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 5, 2026 | Jun 3, 2026 |
| 10-Q | Quarterly report | May 11, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 11, 2026 | May 11, 2026 |
| ARS | Annual report to shareholders | Apr 23, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 23, 2026 | — |
| DEF 14A | Proxy statement | Apr 23, 2026 | Jun 3, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 13, 2026 | Apr 10, 2026 |
| 10-K | Annual report | Mar 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2026 | Mar 9, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 5, 2026 | Dec 29, 2025 |
| 10-Q | Quarterly report | Nov 13, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2025 | Nov 13, 2025 |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2025 | Aug 11, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 15, 2025 | Jul 10, 2025 |
| 8-K |
Current report
Agreement ended
|
Jun 20, 2025 | Jun 12, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 6, 2025 | Jun 3, 2025 |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 12, 2025 | May 12, 2025 |
| ARS | Annual report to shareholders | Apr 24, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 24, 2025 | — |
| DEF 14A | Proxy statement | Apr 24, 2025 | Jun 3, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 15, 2025 | Apr 14, 2025 |
| 8-K |
Current report
Auditor change
|
Mar 21, 2025 | Mar 17, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2025 | Mar 10, 2025 |
| 10-K | Annual report | Mar 10, 2025 | Dec 31, 2024 |
| EFFECT | Filing | Nov 21, 2024 | — |
| CORRESP | Letter to the SEC | Nov 19, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 19, 2024 | — |
| S-3 | Shelf registration | Nov 15, 2024 | — |
| 8-K |
Current report
Results of operations
|
Nov 12, 2024 | Nov 11, 2024 |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Material agreement
|
Oct 4, 2024 | Sep 30, 2024 |
| UPLOAD | Letter from the SEC | Sep 24, 2024 | — |
| CORRESP | Letter to the SEC | Sep 18, 2024 | — |
| UPLOAD | Letter from the SEC | Sep 11, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 10, 2024 | Sep 10, 2024 |
| CORRESP | Letter to the SEC | Aug 27, 2024 | — |
| UPLOAD | Letter from the SEC | Aug 21, 2024 | — |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2024 | Aug 12, 2024 |
| 424B3 | Prospectus | Jul 8, 2024 | — |
| EFFECT | Filing | Jul 5, 2024 | — |
| POS AM | Registration statement | Jul 1, 2024 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2024 | Jun 4, 2024 |
| 424B3 | Prospectus | May 24, 2024 | — |
| EFFECT | Filing | May 22, 2024 | — |
| POS AM | Post-effective registration statement | May 17, 2024 | — |
| 424B3 | Prospectus | May 13, 2024 | — |
| 10-Q | Quarterly report | May 13, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 13, 2024 | May 13, 2024 |
| 424B3 | Prospectus | Apr 29, 2024 | — |
| DEF 14A | Proxy statement | Apr 26, 2024 | Jun 4, 2024 |
| POS EX | Post-effective amendment no. 1 to form s-1 | Mar 13, 2024 | — |
| 424B3 | Prospectus | Mar 13, 2024 | — |
| 10-K | Annual report | Mar 11, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 11, 2024 | Mar 11, 2024 |
| 424B3 | Prospectus | Nov 14, 2023 | — |
| 10-Q | Quarterly report | Nov 14, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 14, 2023 | Nov 14, 2023 |
| EFFECT | Filing | Sep 25, 2023 | — |
| 424B3 | Prospectus | Sep 25, 2023 | — |
| CORRESP | Letter to the SEC | Sep 21, 2023 | — |
| CORRESP | Letter to the SEC | Sep 15, 2023 | — |
| S-1/A | Amended registration statement | Sep 15, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Aug 25, 2023 | Aug 21, 2023 |
| S-8 | Employee stock plan registration | Aug 22, 2023 | — |
| 10-Q | Quarterly report | Aug 14, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2023 | Aug 14, 2023 |
| UPLOAD | Letter from the SEC | Jul 31, 2023 | — |
| DEL AM | Form del am | Jul 11, 2023 | — |
| S-1 | Registration statement | Jul 7, 2023 | — |
| 8-K |
Current report
Auditor change
|
Jun 30, 2023 | Jun 29, 2023 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Change to shareholder rights, Change in control, Officer or director change, Bylaw or fiscal year change
|
Jun 14, 2023 | Jun 8, 2023 |
| 25-NSE | Delisting notice | Jun 9, 2023 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Jun 7, 2023 | Jun 6, 2023 |
| 425 | Form 425 | Jun 5, 2023 | — |
| 425 | Current report | May 30, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
May 30, 2023 | May 25, 2023 |
| 424B3 | Prospectus | May 26, 2023 | — |
| 425 | Current report | May 24, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
May 24, 2023 | May 18, 2023 |
| 425 | Form 425 | May 19, 2023 | — |
| 10-Q | Quarterly report | May 12, 2023 | Mar 31, 2023 |
| EFFECT | Filing | May 10, 2023 | — |
| 424B3 | Prospectus | May 10, 2023 | — |
| S-4/A | Registration statement | May 9, 2023 | — |
| CORRESP | Letter to the SEC | May 8, 2023 | — |
| S-4/A | Amendment no. 4 to form s-4 | May 4, 2023 | — |
| CORRESP | Letter to the SEC | Apr 24, 2023 | — |
| S-4/A | Registration statement | Apr 24, 2023 | — |
| 425 | Current report | Apr 24, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Apr 24, 2023 | Apr 23, 2023 |
| UPLOAD | Letter from the SEC | Mar 22, 2023 | — |
| 425 | Current report | Mar 21, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 21, 2023 | Mar 21, 2023 |
| S-4/A | Registration statement | Mar 7, 2023 | — |
| CORRESP | Letter to the SEC | Mar 6, 2023 | — |
| 10-K | Annual report | Mar 2, 2023 | Dec 31, 2022 |
| 425 | Form 425 | Feb 27, 2023 | — |
| UPLOAD | Letter from the SEC | Feb 17, 2023 | — |
| S-4/A | Registration statement | Feb 2, 2023 | — |
| CORRESP | Letter to the SEC | Feb 2, 2023 | — |
| 425 | Form 425 | Jan 27, 2023 | — |
| UPLOAD | Letter from the SEC | Jan 23, 2023 | — |
| 425 | Form 425 | Jan 17, 2023 | — |
| 425 | Form 425 | Jan 4, 2023 | — |
| S-4 | Registration for a merger or exchange | Dec 23, 2022 | — |
| 425 | Form 425 | Dec 20, 2022 | — |
| 425 | Form 425 | Dec 15, 2022 | — |
| 425 | Form 425 | Dec 14, 2022 | — |
| 425 | Current report | Dec 14, 2022 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Dec 14, 2022 | Dec 13, 2022 |
| 10-Q | Quarterly report | Nov 10, 2022 | Sep 30, 2022 |
| 10-Q | Quarterly report | Aug 15, 2022 | Jun 30, 2022 |
| 10-Q | Quarterly report | May 11, 2022 | Mar 31, 2022 |
| 10-K | Annual report | Mar 30, 2022 | Dec 31, 2021 |
| 10-Q/A | Amended quarterly report | Mar 3, 2022 | Sep 30, 2021 |
| 8-K |
Current report
Restatement
|
Feb 24, 2022 | Feb 24, 2022 |
| 8-K |
Current report
Officer or director change
|
Feb 22, 2022 | Feb 21, 2022 |
| 10-Q | Quarterly report | Nov 12, 2021 | Sep 30, 2021 |
| 10-Q | Quarterly report | Aug 12, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Other events
|
Aug 6, 2021 | Aug 6, 2021 |
| 10-Q | Quarterly report | Jul 30, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Other events
|
Jun 24, 2021 | Jun 18, 2021 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Officer or director change, Bylaw or fiscal year change, Other events
|
Jun 21, 2021 | Jun 18, 2021 |
| 424B4 | Prospectus | Jun 17, 2021 | — |
| EFFECT | Filing | Jun 15, 2021 | — |
| S-1MEF | Registration statement | Jun 15, 2021 | — |
| CERT | Nyse certification | Jun 15, 2021 | — |
| 8-A12B | For registration of certain classes of securities | Jun 15, 2021 | — |
| CORRESP | Letter to the SEC | Jun 11, 2021 | — |
| CORRESP | Letter to the SEC | Jun 11, 2021 | — |
| S-1/A | Amended registration statement | Jun 9, 2021 | — |
| S-1/A | Amended registration statement | Jun 3, 2021 | — |
| CORRESP | Letter to the SEC | May 21, 2021 | — |
| S-1/A | Amended registration statement | May 21, 2021 | — |
| UPLOAD | Letter from the SEC | May 17, 2021 | — |
| CORRESP | Letter to the SEC | May 6, 2021 | — |
| S-1/A | Amended registration statement | May 6, 2021 | — |
| UPLOAD | Letter from the SEC | Apr 7, 2021 | — |
| S-1 | Registration statement | Mar 10, 2021 | — |
Showing 147 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Electrical Industrial Apparatus (SIC 3620)
- Listed as
- NPWR (NYSE), NPWR-WT (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Houston, TX
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1845437
- Former names
- Rice Acquisition Corp. II (until Jun 7, 2023)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.