NPEH, LLC trims NET Power (NPWR) stake, holds 1.2M shares

Rhea-AI Filing Summary

NPEH, LLC, a 10% owner of NET Power Inc. (NPWR), reported selling 54,780 shares of Class A common stock on January 29, 2026 at a weighted average price of $2.3485 per share. These shares were sold in multiple trades at prices ranging from $2.27 to $2.42. Following the sale, NPEH, LLC directly beneficially owns 1,200,000 shares of NET Power Class A common stock.

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

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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)
01/29/2026

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	01/29/2026		S		54,780	D	$2.3485(1)	1,200,000	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 $2.27 to $2.42. 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.

	By: /s/ Min Lee, General Counsel of 8 Rivers Capital, LLC, its Manager	02/02/2026
	** 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 NPEH, LLC report in NET Power (NPWR) stock?

NPEH, LLC reported selling 54,780 shares of NET Power Class A common stock. The sale occurred on January 29, 2026 at a weighted average price of $2.3485 per share, executed through multiple trades within a disclosed price range.

At what prices did NPEH, LLC sell its NET Power (NPWR) shares?

NPEH, LLC’s sale had a weighted average price of $2.3485 per share. The Class A common stock was sold in multiple trades at individual prices ranging from $2.27 to $2.42, according to the Form 4 footnote disclosure.

How many NET Power (NPWR) shares does NPEH, LLC own after the reported sale?

After the reported transaction, NPEH, LLC beneficially owns 1,200,000 shares of NET Power Class A common stock. This figure reflects the holdings directly attributed to NPEH, LLC following the disposition of 54,780 shares on January 29, 2026.

What is NPEH, LLC’s relationship to NET Power Inc. (NPWR)?

NPEH, LLC is identified as a 10% owner of NET Power Inc. This means it holds at least ten percent of the company’s equity, triggering ongoing reporting obligations for share transactions under Section 16 rules governing major shareholders.

Was NPEH, LLC’s NET Power trade a single sale or multiple trades?

The transaction was executed as multiple trades rather than a single sale. The filing notes that shares were sold at prices between $2.27 and $2.42, and NPEH, LLC will provide detailed trade-by-trade share counts upon request to interested parties.

Where can investors get detailed pricing for NPEH, LLC’s NET Power share sales?

Detailed pricing information is available directly from NPEH, LLC. The filing states NPEH, LLC will provide to the SEC, NET Power, or any NET Power security holder full details on the number of shares sold at each separate price level.