DAMIAN R. BEAUCHAMP - 30 Jul 2025 Form 3 Insider Report for NET Power Inc. (NPWR)

Role: 10%+ Owner
Signature: /s/ Damian R. Beauchamp
Issuer symbol: NPWR
Transactions as of: 30 Jul 2025
Transactions value $: $0
Form type: 3
Filing time: 11 Aug 2025, 16:30:16 UTC
SEC: View on sec.gov

Reporting Owners (2)

Name	Relationship	Address	Signature	Signature date	CIK
BEAUCHAMP DAMIAN R.	10%+ Owner	406 BLACKWELL STREET, 4TH FLOOR, DURHAM	/s/ Damian R. Beauchamp	08 Aug 2025	0001973442
Beauchamp Cynda	10%+ Owner	8 THE GREEN STE B, DOVER	/s/ Cynda Beauchamp	08 Aug 2025	0002079418

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	NPWR	Class B Common Stock						26.7M	30 Jul 2025	See Footnotes	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	NPWR	Class A Units of NET Power Operations LLC							30 Jul 2025	Class A Common Stock	26.7M		See Footnotes	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The securities reported on this Form 3 are directly held by NPEH, LLC ("NPEH"), a majority owned subsidiary of 8 Rivers Capital LLC ("8 Rivers") and of which 8 Rivers is the manager. The Reporting Persons are married and each Reporting Person independently indirectly owns approximately 34.2% of 8 Rivers. Accordingly, each Reporting Person may be deemed the indirect beneficial owner of the securities owned by NPEH to the extent of his or her pecuniary interest therein. Each Reporting Person disclaims beneficial ownership of these securities except to the extent of his or her pecuniary interest therein.
F2	For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. The Class A Units of NET Power Operations LLC are exchangeable (together with the cancellation of a corresponding number of shares of the Issuer's Class B Common Stock) into shares of the Issuer's Class A Common Stock on a one-for-one basis or, at the Issuer's election, cash, and have no expiration date.

Content

The securities reported on this Form 3 are directly held by NPEH, LLC ("NPEH"), a majority owned subsidiary of 8 Rivers Capital LLC ("8 Rivers") and of which 8 Rivers is the manager. The Reporting Persons are married and each Reporting Person independently indirectly owns approximately 34.2% of 8 Rivers. Accordingly, each Reporting Person may be deemed the indirect beneficial owner of the securities owned by NPEH to the extent of his or her pecuniary interest therein. Each Reporting Person disclaims beneficial ownership of these securities except to the extent of his or her pecuniary interest therein.

For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. The Class A Units of NET Power Operations LLC are exchangeable (together with the cancellation of a corresponding number of shares of the Issuer's Class B Common Stock) into shares of the Issuer's Class A Common Stock on a one-for-one basis or, at the Issuer's election, cash, and have no expiration date.