Company: NPWR-WT
Filing Date: 2025-12-09
Form Type: SCHEDULE 13D/A
Source: 0001104659-25-119737
Chunk: 0

Company: NET Power Inc.
Filing Date: 2025-12-09
Form: SCHEDULE 13D/A
Chunk 0
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 certain shares (See Instructions) |
| 13                                                                 |                                                                              22.25 % |
| 14                                                                 |                                                                                   OO |

Comment for Type of Reporting Person: Row 8, 10 and 11. Beneficial ownership of shares of Class A common stock, par value $0.0001 per share ("Class A Common Stock"), of NET Power Inc. (the "Issuer") is being reported hereunder solely because the reporting person may be deemed to have beneficial ownership of such shares as a result of the relationships described under Item 2 and Item 3 and the matters described in Item 3, Item 4 and Item 5 of Schedule 13D (as defined below), as amended by this Amendment No. 9 (as defined below). Represents (i) 2,550,000 shares of Class A Common Stock held directly by NPEH, LLC ("NPEH"), and (ii) 20,729,880 Class A Units of NET Power Operations LLC ("Opco Units") held directly by NPEH that are exchangeable for shares of Class A Common Stock on a one-for-one basis as described herein. At the time of any such exchange, an equal number of shares of Class B common stock, par value $0.0001 per share ("Class B Common Stock"), of the Issuer held directly by NPEH, which have no economic value, will be cancelled. Row 13. Based upon (i) 83,919,757 shares of Class A Common Stock issued and outstanding as of November 11, 2025, as reported in the Issuer's Current Report on Form 10-Q filed with the Securities and Exchange Commission (the "SEC") on November 13, 2025 (the "Issuer Form 10-Q"), and (ii) 2,550,000 shares of Class A Common Stock held directly by NPEH and 20,729,880 shares of Class A Common Stock issuable to NPEH upon the redemption and exchange of an equal number of Opco Units (and the cancellation of an equal number of shares of Class B Common Stock) held by NPEH.

| SCHEDULE 13D |

| CUSIP No. | 64107A105 |

| 1                                                                  |                                                                            NPEH, LLC |
| 2                                                                  |                                                                                -a)(b |
| 3                                                                  |                                                                         SEC use only |
| 4                                                                  |                                                                                   OO |
| 5                                                                  |  Check