NPEH, LLC sells 188,517 NET Power (NPWR) shares in open market

Rhea-AI Filing Summary

NPEH, LLC, a 10% owner of NET Power Inc., reported open-market sales of a total of 188,517 shares of Class A Common Stock. On February 19, it sold 125,000 shares at a weighted average price of $2.1411 per share, followed by 63,517 shares on February 20 at a weighted average price of $2.0346 per share. After these transactions, NPEH, LLC held 586,483 shares of Class A Common Stock.

Insider Trade Summary

Net Seller: 188,517 shares ($396,869)

Net Sell 2 txns

Insider NPEH, LLC

Role 10% Owner

Sold 188,517 shs ($397K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	63,517	$2.0346	$129K
Sale	Class A Common Stock	125,000	$2.1411	$268K

Holdings After Transaction: Class A Common Stock — 586,483 shares (Direct)

Footnotes (1)

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 $2.10 to $2.17. 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. 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 $2.00 to $2.1175. 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.

Form 4 Insider Transactions: What Each Field Means →

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
Estimated average burden
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)
02/19/2026

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	02/19/2026		S		125,000	D	$2.1411(1)	650,000	D
Class A Common Stock	02/20/2026		S		63,517	D	$2.0346(2)	586,483	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 $2.10 to $2.17. 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 $2.00 to $2.1175. 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	02/23/2026
	** 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

Who sold NET Power (NPWR) shares in this Form 4 filing?

The seller was NPEH, LLC, a reported 10% owner of NET Power Inc. The entity executed open-market sales of the company’s Class A Common Stock, as disclosed in the Form 4 insider trading report.

How many NET Power (NPWR) shares did NPEH, LLC sell?

NPEH, LLC sold 188,517 shares of NET Power Inc. Class A Common Stock. The Form 4 shows two separate open-market transactions that together total this share amount for the reporting owner.

On what dates did NPEH, LLC sell NPWR shares?

NPEH, LLC sold NET Power Inc. shares on February 19, 2026 and February 20, 2026. These two consecutive trading days account for all 188,517 shares disclosed in the Form 4 filing.

What sale prices were reported for the NPWR insider transactions?

The Form 4 reports weighted average prices. On February 19, shares were sold at $2.1411, with individual trades from $2.10 to $2.17. On February 20, shares were sold at $2.0346, with trades from $2.00 to $2.1175.

How many NET Power (NPWR) shares does NPEH, LLC own after these sales?

Following the reported transactions, NPEH, LLC holds 586,483 shares of NET Power Inc. Class A Common Stock. This post-transaction balance is disclosed directly in the Form 4 ownership table.

Were NPEH, LLC’s NPWR sales single trades or multiple trades?

The filing states the sales occurred in multiple trades on each date. It discloses weighted average prices and notes that NPEH, LLC will provide full trade-by-trade price details upon request to the SEC, the issuer, or its security holders.