[Form 4] NET Power Inc. Insider Trading Activity

Rhea-AI Filing Summary

NET Power Inc. (NPWR) reported insider share sales by a major holder. NPEH, LLC, a director and 10% owner, sold 132,837 shares of Class A common stock on 11/20/2025 at a weighted average price of $2.5971 per share, and 17,163 shares on 11/21/2025 at a weighted average price of $2.5012 per share. In total, these transactions covered 150,000 shares sold over two days. After the sales, NPEH, LLC beneficially owned 3,100,000 Class A common shares, held directly. The prices reflect multiple trades within disclosed ranges, and full trade-level details are available from NPEH, LLC upon request.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

NPEH, LLC

(Last) (First) (Middle)

406 BLACKWELL STREET, 4TH FLOOR

(Street)

DURHAM NC 27701

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NET Power Inc. [ NPWR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/20/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	11/20/2025		S		132,837	D	$2.5971(1)	3,117,163	D
Class A Common Stock	11/21/2025		S		17,163	D	$2.5012(2)	3,100,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.7406. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

2. The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.505. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

	By: /s/ Min Lee, General Counsel of 8 Rivers Capital, LLC, its Manager	11/24/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did NET Power (NPWR) report in this Form 4?

The filing reports that NPEH, LLC, a director and 10% owner of NET Power Inc. (NPWR), sold shares of the company’s Class A common stock in two transactions on 11/20/2025 and 11/21/2025.

How many NET Power (NPWR) shares did the insider sell and at what prices?

NPEH, LLC sold 132,837 Class A common shares on 11/20/2025 at a weighted average price of $2.5971, and 17,163 shares on 11/21/2025 at a weighted average price of $2.5012.

How many NET Power (NPWR) shares does the reporting person own after these sales?

Following the reported transactions, NPEH, LLC beneficially owned 3,100,000 shares of NET Power’s Class A common stock, held in direct ownership.

What price ranges were NET Power (NPWR) shares sold in these insider transactions?

For the 11/20/2025 sale, shares were sold in multiple trades between $2.50 and $2.7406. For the 11/21/2025 sale, trades occurred between $2.50 and $2.505.

Who can request detailed trade data for these NET Power (NPWR) insider sales?

NPEH, LLC has stated it will provide full information on the number of shares sold at each separate price to the SEC, the issuer, or any security holder of NET Power upon request.

What is the relationship of NPEH, LLC to NET Power (NPWR)?

NPEH, LLC is identified as a director and 10% owner of NET Power Inc., making it an insider subject to Section 16 reporting.