Company: NPWR-WT
Filing Date: 2025-04-24
Form Type: DEF 14A
Source: 0001140361-25-015450
Chunk: 0

Company: NET Power Inc.
Filing Date: 2025-04-24
Form: DEF 14A
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant☐ Check the appropriate box:

| ☐ | Preliminary Proxy Statement |

| ☐ | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |

| ☒ | Definitive Proxy Statement |

| ☐ | Definitive Additional Materials |

| ☐ | Soliciting Material under §240.14a-12 |

NET POWER INC. (NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) (NAME OF PERSON(S) FILING PROXY STATEMENT, IF OTHER THAN THE REGISTRANT) Payment of Filing Fee (Check all boxes that apply):

| ☒ | ​​No fee required. |

| ☐ | ​​Fee paid previously with preliminary materials. |

| ☐ | ​​Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS AND 2025 PROXY STATEMENT NOTICE OF 2025 ANNUAL MEETING OF STOCKHOLDERS

The Board of Directors has fixed April 21, 2025 as the record date for determining stockholders entitled to receive notice of, and to vote at, the 2025 annual meeting of stockholders (“Annual Meeting” or “Annual Meeting of Stockholders”) or any adjournment or postponement thereof. Only stockholders of record at the close of business on that date will be entitled to notice of, and to vote at, the Annual Meeting. YOUR VOTE IS IMPORTANT

| ​ |     | www.proxyvote.com                | ​ |     | 1-800-690-6903 |
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Important Notice Regarding the Availability of Proxy Materials for our Annual Meeting of Stockholders to be Held on June 3, 2025. The Proxy Statement is available at www.proxyvote.com. By Order of the Board of Directors Peter