Insider entities linked to NET Power (NPWR) report stock sales

Rhea-AI Filing Summary

NET Power Inc. insider entities reported open-market sales of Class A common stock over three days in February 2026. NPEH, LLC sold 40,000 shares on February 10 at a weighted average price of $2.0803, 60,000 shares on February 11 at $2.0225, and 150,000 shares on February 12 at $2.0307.

After these transactions, NPEH, LLC indirectly held 950,000 Class A shares. 8 Rivers Capital, LLC and Damian R. Beauchamp are reporting persons because of their indirect interests in NPEH and disclose that any beneficial ownership is only to the extent of their pecuniary interests.

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^*

8 Rivers Capital, 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)
02/10/2026

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

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

	Form filed by One Reporting Person
X	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	02/10/2026		S		40,000	D	$2.0803(1)	1,160,000	I	By: NPEH, LLC(4)(5)
Class A Common Stock	02/11/2026		S		60,000	D	$2.0225(2)	1,100,000	I	By: NPEH, LLC(4)(5)
Class A Common Stock	02/12/2026		S		150,000	D	$2.0307(3)	950,000	I	By: NPEH, LLC(4)(5)

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

1. Name and Address of Reporting Person^*

8 Rivers Capital, LLC

(Last) (First) (Middle)

406 BLACKWELL STREET, 4TH FLOOR

(Street)

DURHAM NC 27701

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

BEAUCHAMP DAMIAN R.

(Last) (First) (Middle)

406 BLACKWELL STREET, 4TH FLOOR

(Street)

DURHAM NC 27701

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

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 $2.03 to $2.115. 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 $2.05. 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.

3. 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 $2.07. 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.

4. As manager and holder of approximately 90.9% of the outstanding equity in NPEH, 8 Rivers Capital, LLC ("8 Rivers") may be deemed to be a beneficial owner of the securities directly owned by NPEH. 8 Rivers disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that 8 Rivers is the beneficial owner of such securities for purposes of Section 16 or otherwise.

5. Damian R. Beauchamp ("Mr. Beauchamp") independently indirectly owns approximately 63.72% of 8 Rivers, and Mr. Beauchamp directly owns approximately 3.83% of 8 Rivers. Accordingly, Mr. Beauchamp may be deemed the indirect beneficial owner of the securities owned by NPEH to the extent of his pecuniary interest therein. Mr. Beauchamp disclaims beneficial ownership of any such securities, except to the extent of his or her pecuniary interest therein, if any, and this report shall not be deemed an admission that Mr. Beauchamp is the beneficial owner of such securities for purposes of Section 16 or otherwise.

	By: /s/ Min Lee, General Counsel of 8 Rivers Capital, LLC	02/12/2026
	By: /s/ Damian R. Beauchamp	02/12/2026
	** Signature of Reporting Person	Date
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FAQ

What insider activity did NPWR report in this Form 4 filing?

The filing reports open-market sales of NET Power Inc. Class A common stock by NPEH, LLC over three days in February 2026. These sales are disclosed as indirect insider transactions linked to 8 Rivers Capital, LLC and Damian R. Beauchamp through their interests in NPEH.

How many NET Power (NPWR) shares did NPEH, LLC sell and at what prices?

NPEH, LLC sold 40,000 shares on February 10 at a weighted average price of $2.0803, 60,000 shares on February 11 at $2.0225, and 150,000 shares on February 12 at $2.0307. Each price reflects multiple trades within a narrow intraday range.

How many NET Power (NPWR) shares does NPEH, LLC hold after these transactions?

Following the reported sales, NPEH, LLC beneficially owned 950,000 shares of NET Power Inc. Class A common stock indirectly. This figure reflects the position after the February 12, 2026 transaction, as disclosed in the beneficial ownership column of the insider reporting table.

Who are the reporting persons in this NET Power (NPWR) insider filing?

The reporting persons are 8 Rivers Capital, LLC and Damian R. Beauchamp, each identified as a 10% owner. Their reported interest arises through NPEH, LLC, which directly holds the NET Power shares, with both parties limiting beneficial ownership to their pecuniary interests.

What do the weighted average prices mean in the NPWR insider sales?

Each reported price is a weighted average of multiple trades executed that day within a specified range. For example, February 10 trades occurred between $2.03 and $2.115. NPEH, LLC offers to provide detailed per-trade pricing information to regulators or shareholders upon request.

How are 8 Rivers Capital and Damian R. Beauchamp connected to NPEH, LLC?

8 Rivers Capital, LLC is the manager and holds about 90.9% of NPEH’s equity. Damian R. Beauchamp indirectly owns roughly 63.72% of 8 Rivers and directly owns about 3.83%, leading to potential indirect beneficial ownership limited to their pecuniary interests.