Browse the latest SEC filings and forms submitted by NET Power Inc. (NPWR). Access annual reports, quarterly statements, and other official disclosures.
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Search Company Filings →| Form | Filing Date | Description | Link |
|---|---|---|---|
| 4 | March 10, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 10, 2026 | OWNERSHIP DOCUMENT | View Document |
| 10-K | March 9, 2026 | 10-K | View Document |
| 8-K | March 9, 2026 | 8-K | View Document |
| 4 | March 5, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 5, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 2, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | March 2, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 23, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 23, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 18, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 18, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 12, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 12, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 2, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 2, 2026 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13D/A | Jan. 28, 2026 | - | View Document |
| 4 | Jan. 28, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Jan. 28, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Jan. 16, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Jan. 16, 2026 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Jan. 5, 2026 | 8-K | View Document |
| 4 | Dec. 29, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 29, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 23, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 23, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 11, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 11, 2025 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13D/A | Dec. 9, 2025 | - | View Document |
| 4 | Dec. 8, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 8, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 2, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 2, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 24, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 24, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 19, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 19, 2025 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Nov. 13, 2025 | 8-K | View Document |
| 10-Q | Nov. 13, 2025 | 10-Q | View Document |
| SCHEDULE 13D/A | Nov. 4, 2025 | - | View Document |
| 4 | Nov. 4, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 4, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 4, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 30, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 30, 2025 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13D/A | Oct. 29, 2025 | - | View Document |
| 4 | Oct. 27, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 27, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 22, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 22, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 16, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 16, 2025 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Aug. 11, 2025 | 8-K | View Document |
| 10-Q | Aug. 11, 2025 | 10-Q | View Document |
| 3 | Aug. 11, 2025 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13D/A | Aug. 1, 2025 | - | View Document |
| 4 | July 31, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | July 17, 2025 | 4 | View Document |
| SCHEDULE 13D/A | July 17, 2025 | - | View Document |
| 8-K | July 15, 2025 | 8-K | View Document |
| 8-K | June 20, 2025 | 8-K | View Document |
| 8-K | June 6, 2025 | 8-K | View Document |
| 4 | June 5, 2025 | FORM 4 | View Document |
| 4 | June 5, 2025 | FORM 4 | View Document |
| 4 | June 5, 2025 | FORM 4 | View Document |
| 4 | June 5, 2025 | FORM 4 | View Document |
| 4 | June 4, 2025 | FORM 4 | View Document |
| 3 | June 4, 2025 | FORM 3 | View Document |
| 144 | May 30, 2025 | - | View Document |
| 10-Q | May 12, 2025 | 10-Q | View Document |
| 8-K | May 12, 2025 | 8-K | View Document |
| ARS | April 24, 2025 | ARS | View Document |
| DEF 14A | April 24, 2025 | DEF 14A | View Document |
| DEFA14A | April 24, 2025 | DEFA14A | View Document |
| 8-K | April 15, 2025 | 8-K | View Document |
| 4 | April 11, 2025 | FORM 4 | View Document |
| 4 | April 7, 2025 | FORM 4 | View Document |
| 4 | April 4, 2025 | FORM 4 | View Document |
| 4 | April 4, 2025 | FORM 4 | View Document |
| 144 | April 3, 2025 | - | View Document |
| 8-K | March 21, 2025 | 8-K | View Document |
| 10-K | March 10, 2025 | 10-K | View Document |
| 8-K | March 10, 2025 | 8-K | View Document |
| 4 | Jan. 6, 2025 | FORM 4 | View Document |
| 4 | Nov. 26, 2024 | FORM 4 | View Document |
| SC 13D/A | Nov. 26, 2024 | SC 13D/A | View Document |
| 4 | Nov. 26, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Nov. 26, 2024 | OWNERSHIP DOCUMENT | View Document |
| 144 | Nov. 22, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | OWNERSHIP DOCUMENT | View Document |
| EFFECT | Nov. 21, 2024 | - | View Document |
| 4 | Nov. 21, 2024 | OWNERSHIP DOCUMENT | View Document |
| CORRESP | Nov. 19, 2024 | - | View Document |
| 144 | Nov. 19, 2024 | - | View Document |
| UPLOAD | Nov. 19, 2024 | - | View Document |
| S-3 | Nov. 15, 2024 | REGISTRATION STATEMENT | View Document |
| 8-K | Nov. 12, 2024 | 8-K | View Document |
| 10-Q | Nov. 12, 2024 | 10-Q | View Document |
| SC 13D/A | Oct. 21, 2024 | SC 13D/A | View Document |
| 4 | Oct. 18, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 18, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 11, 2024 | FORM 4 | View Document |
| 4 | Oct. 11, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 11, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 7, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 7, 2024 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Oct. 4, 2024 | 8-K | View Document |
| 4/A | Oct. 2, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 2, 2024 | OWNERSHIP DOCUMENT | View Document |
| UPLOAD | Sept. 24, 2024 | - | View Document |
| 4 | Sept. 24, 2024 | OWNERSHIP DOCUMENT | View Document |
| SC 13D/A | Sept. 23, 2024 | SC 13D/A | View Document |
| 4 | Sept. 19, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 19, 2024 | OWNERSHIP DOCUMENT | View Document |
| CORRESP | Sept. 18, 2024 | - | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 11, 2024 | OWNERSHIP DOCUMENT | View Document |
| UPLOAD | Sept. 11, 2024 | - | View Document |
| 4 | Sept. 11, 2024 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Sept. 10, 2024 | 8-K | View Document |
| 4 | Sept. 6, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 6, 2024 | OWNERSHIP DOCUMENT | View Document |
| CORRESP | Aug. 27, 2024 | - | View Document |
| UPLOAD | Aug. 21, 2024 | - | View Document |
| 8-K | Aug. 12, 2024 | 8-K | View Document |
| 10-Q | Aug. 12, 2024 | 10-Q | View Document |
| 144 | July 26, 2024 | - | View Document |
| 424B3 | July 8, 2024 | PROSPECTUS | View Document |
| EFFECT | July 5, 2024 | - | View Document |
| 4 | July 3, 2024 | FORM 4 | View Document |
| POS AM | July 1, 2024 | REGISTRATION STATEMENT | View Document |
| 8-K | June 10, 2024 | 8-K | View Document |
| 4 | June 6, 2024 | FORM 4 | View Document |
| 4 | June 6, 2024 | FORM 4 | View Document |
| 4 | June 6, 2024 | FORM 4 | View Document |
| 4 | June 6, 2024 | FORM 4 | View Document |
| 4 | May 28, 2024 | OWNERSHIP DOCUMENT | View Document |
| SC 13D/A | May 28, 2024 | SC 13D/A | View Document |
| 424B3 | May 24, 2024 | PROSPECTUS | View Document |
| EFFECT | May 22, 2024 | - | View Document |
| POS AM | May 17, 2024 | POST-EFFECTIVE REGISTRATION STATEMENT | View Document |
| 3 | May 16, 2024 | FORM 3 | View Document |
| 424B3 | May 13, 2024 | PROSPECTUS SUPPLEMENT | View Document |
| 10-Q | May 13, 2024 | 10-Q | View Document |
| 8-K | May 13, 2024 | 8-K | View Document |
| 424B3 | April 29, 2024 | PROSPECTUS SUPPLEMENT | View Document |
| DEF 14A | April 26, 2024 | DEF 14A | View Document |
| 4 | April 4, 2024 | FORM 4 | View Document |
| 4 | April 4, 2024 | FORM 4 | View Document |
| 4 | April 3, 2024 | FORM 4 | View Document |
| POS EX | March 13, 2024 | POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 | View Document |
| 424B3 | March 13, 2024 | PROSPECTUS SUPPLEMENT | View Document |
| 10-K | March 11, 2024 | 10-K | View Document |
| 8-K | March 11, 2024 | 8-K | View Document |
| SC 13G/A | Feb. 14, 2024 | AMENDMENT NO. 1 TO SCHEDULE 13G | View Document |
| SC 13G/A | Feb. 14, 2024 | SCHEDULE 13G/A | View Document |
| SC 13G/A | Feb. 12, 2024 | - | View Document |
| SC 13G/A | Feb. 7, 2024 | NET POWER INC. | View Document |
| 4 | Jan. 4, 2024 | FORM 4 | View Document |
| 424B3 | Nov. 14, 2023 | PROSPECTUS SUPPLEMENT | View Document |
| 8-K | Nov. 14, 2023 | 8-K | View Document |
| 10-Q | Nov. 14, 2023 | 10-Q | View Document |
| 4 | Oct. 4, 2023 | FORM 4 | View Document |
| 424B3 | Sept. 25, 2023 | PROSPECTUS | View Document |
| EFFECT | Sept. 25, 2023 | - | View Document |
| CORRESP | Sept. 21, 2023 | - | View Document |
| CORRESP | Sept. 15, 2023 | - | View Document |
| S-1/A | Sept. 15, 2023 | REGISTRATION STATEMENT | View Document |
| 4 | Sept. 14, 2023 | FORM 4 | View Document |
| 4 | Sept. 12, 2023 | FORM 4 | View Document |
| 4 | Sept. 8, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 4 | Sept. 5, 2023 | FORM 4 | View Document |
| 4 | Sept. 1, 2023 | FORM 4 | View Document |
| 4 | Aug. 31, 2023 | FORM 4 | View Document |
| 4 | Aug. 30, 2023 | FORM 4 | View Document |
| 8-K | Aug. 25, 2023 | 8-K | View Document |
| 4 | Aug. 23, 2023 | FORM 4 | View Document |
| S-8 | Aug. 22, 2023 | REGISTRATION STATEMENT | View Document |
| 4 | Aug. 21, 2023 | - | View Document |
| 4 | Aug. 18, 2023 | - | View Document |
| 10-Q | Aug. 14, 2023 | 10-Q | View Document |
| 8-K | Aug. 14, 2023 | 8-K | View Document |
| 4 | Aug. 11, 2023 | - | View Document |
| UPLOAD | July 31, 2023 | - | View Document |
| DEL AM | July 11, 2023 | FORM DEL AM | View Document |
| S-1 | July 7, 2023 | REGISTRATION STATEMENT | View Document |
| 8-K | June 30, 2023 | CURRENT REPORT | View Document |
| SC 13G/A | June 30, 2023 | AMENDMENT NO. 1 TO SCHEDULE 13G | View Document |
| 4 | June 30, 2023 | - | View Document |
| 4 | June 30, 2023 | - | View Document |
| 3 | June 20, 2023 | OWNERSHIP DOCUMENT | View Document |
| 3 | June 20, 2023 | OWNERSHIP DOCUMENT | View Document |
| SC 13D | June 20, 2023 | SC 13D | View Document |
| 3 | June 20, 2023 | FORM 3 | View Document |
| 3 | June 20, 2023 | OWNERSHIP DOCUMENT | View Document |
| SC 13D | June 20, 2023 | SCHEDULE 13D | View Document |
| SC 13D | June 20, 2023 | SC 13D | View Document |
| SC 13G | June 20, 2023 | SCHEDULE 13G | View Document |
| 8-K | June 14, 2023 | CURRENT REPORT | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 3 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 4 | June 12, 2023 | - | View Document |
| 25-NSE | June 9, 2023 | - | View Document |
| 8-K | June 7, 2023 | CURRENT REPORT | View Document |
| 425 | June 5, 2023 | FORM 425 | View Document |
| 8-K | May 30, 2023 | CURRENT REPORT | View Document |
| 425 | May 30, 2023 | CURRENT REPORT | View Document |
| 424B3 | May 26, 2023 | PROSPECTUS SUPPLEMENT | View Document |
| 425 | May 24, 2023 | CURRENT REPORT | View Document |
| 8-K | May 24, 2023 | CURRENT REPORT | View Document |
| 425 | May 19, 2023 | FORM 425 | View Document |
| 10-Q | May 12, 2023 | QUARTERLY REPORT | View Document |
| 424B3 | May 10, 2023 | PROSPECTUS | View Document |
| EFFECT | May 10, 2023 | - | View Document |
| S-4/A | May 9, 2023 | REGISTRATION STATEMENT | View Document |
| CORRESP | May 8, 2023 | - | View Document |
| S-4/A | May 4, 2023 | AMENDMENT NO. 4 TO FORM S-4 | View Document |
| S-4/A | April 24, 2023 | REGISTRATION STATEMENT | View Document |
| 8-K | April 24, 2023 | CURRENT REPORT | View Document |
| CORRESP | April 24, 2023 | - | View Document |
| 425 | April 24, 2023 | CURRENT REPORT | View Document |
| UPLOAD | March 22, 2023 | - | View Document |
| 8-K | March 21, 2023 | CURRENT REPORT | View Document |
| 425 | March 21, 2023 | CURRENT REPORT | View Document |
| S-4/A | March 7, 2023 | REGISTRATION STATEMENT | View Document |
| CORRESP | March 6, 2023 | - | View Document |
| 10-K | March 2, 2023 | ANNUAL REPORT | View Document |
| 425 | Feb. 27, 2023 | FORM 425 | View Document |
| UPLOAD | Feb. 17, 2023 | - | View Document |
| SC 13G/A | Feb. 14, 2023 | SC 13G/A | View Document |
| SC 13G | Feb. 14, 2023 | - | View Document |
| SC 13G | Feb. 14, 2023 | - | View Document |
| SC 13G/A | Feb. 14, 2023 | AMENDMENT NO. 1 TO SCHEDULE 13G | View Document |
| CORRESP | Feb. 2, 2023 | - | View Document |
| S-4/A | Feb. 2, 2023 | REGISTRATION STATEMENT | View Document |
| 425 | Jan. 27, 2023 | FORM 425 | View Document |
| UPLOAD | Jan. 23, 2023 | - | View Document |
| 425 | Jan. 17, 2023 | FORM 425 | View Document |
| 425 | Jan. 4, 2023 | FORM 425 | View Document |
| S-4 | Dec. 23, 2022 | REGISTRATION STATEMENT | View Document |
| 425 | Dec. 20, 2022 | FORM 425 | View Document |
| 425 | Dec. 15, 2022 | FORM 425 | View Document |
| 425 | Dec. 14, 2022 | CURRENT REPORT | View Document |
| 8-K | Dec. 14, 2022 | CURRENT REPORT | View Document |
| 425 | Dec. 14, 2022 | FORM 425 | View Document |
| 10-Q | Nov. 10, 2022 | QUARTERLY REPORT | View Document |
| 10-Q | Aug. 15, 2022 | QUARTERLY REPORT | View Document |
| SC 13G | June 22, 2022 | SCHEDULE 13G | View Document |
| 10-Q | May 11, 2022 | QUARTERLY REPORT | View Document |
| 10-K | March 30, 2022 | ANNUAL REPORT | View Document |
| 10-Q/A | March 3, 2022 | AMENDMENT NO. 1 TO FORM 10-Q | View Document |
| 8-K | Feb. 24, 2022 | CURRENT REPORT | View Document |
| 8-K | Feb. 22, 2022 | CURRENT REPORT | View Document |
| SC 13G | Feb. 14, 2022 | SCH 13G | View Document |
| SC 13G | Feb. 11, 2022 | SCHEDULE 13G | View Document |
| 10-Q | Nov. 12, 2021 | QUARTERLY REPORT | View Document |
| 10-Q | Aug. 12, 2021 | 10-Q | View Document |
| 8-K | Aug. 6, 2021 | CURRENT REPORT | View Document |
| 10-Q | July 30, 2021 | QUARTERLY REPORT | View Document |
| SC 13G | June 28, 2021 | RICE ACQUISITION CORP. II | View Document |
| 8-K | June 24, 2021 | CURRENT REPORT | View Document |
| 8-K | June 21, 2021 | CURRENT REPORT | View Document |
| 424B4 | June 17, 2021 | PROSPECTUS | View Document |
| 3 | June 15, 2021 | - | View Document |
| 8-A12B | June 15, 2021 | FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES | View Document |
| CERT | June 15, 2021 | NYSE CERTIFICATION | View Document |
| 3 | June 15, 2021 | - | View Document |
| 3 | June 15, 2021 | - | View Document |
| 3 | June 15, 2021 | OWNERSHIP DOCUMENT | View Document |
| 3 | June 15, 2021 | - | View Document |
| 3 | June 15, 2021 | - | View Document |
| 3 | June 15, 2021 | OWNERSHIP DOCUMENT | View Document |
| S-1MEF | June 15, 2021 | REGISTRATION STATEMENT | View Document |
| EFFECT | June 15, 2021 | - | View Document |
| CORRESP | June 11, 2021 | - | View Document |
| CORRESP | June 11, 2021 | - | View Document |
| S-1/A | June 9, 2021 | REGISTRATION STATEMENT | View Document |
| S-1/A | June 3, 2021 | REGISTRATION STATEMENT | View Document |
| S-1/A | May 21, 2021 | REGISTRATION STATEMENT | View Document |
| CORRESP | May 21, 2021 | - | View Document |
| UPLOAD | May 17, 2021 | - | View Document |
| S-1/A | May 6, 2021 | REGISTRATION STATEMENT | View Document |
| CORRESP | May 6, 2021 | - | View Document |
| UPLOAD | April 7, 2021 | - | View Document |
| S-1 | March 10, 2021 | REGISTRATION STATEMENT | View Document |