NET Power holder NPEH sells 209,142 shares

NET Power Inc. reported that NPEH, LLC, an entity managed by 8 Rivers Capital, executed open-market sales totaling 209,142 shares of Class A Common Stock from July 21–23, 2026.

Rhea-AI Filing Summary

NET Power Inc. reported that NPEH, LLC, an entity managed by 8 Rivers Capital, executed open-market sales totaling 209,142 shares of Class A Common Stock from July 21–23, 2026. The reported weighted average prices reflect trade ranges between $1.50 and $1.56 per share.

8 Rivers Capital and co-reporting person Damian R. Beauchamp are ten percent owners and may be deemed indirect beneficial owners through their interests in NPEH, but each disclaims beneficial ownership beyond their pecuniary interest.

Insider Trade Summary

Net Seller: 209,142 shares

Net Sell 3 txns

Insider 8 Rivers Capital, LLC, BEAUCHAMP DAMIAN R.

Role 10% Owner | 10% Owner

Sold 209,142 shs ($319K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F3, F4, F5	39,142	$1.5066	$59K
Sale	Class A Common Stock F2, F4, F5	90,000	$1.5258	$137K
Sale	Class A Common Stock F1, F4, F5	80,000	$1.53	$122K

Holdings After Transaction: Class A Common Stock — 2,755,858 shares (Indirect, By: NPEH, LLC)

Footnotes (5)

1. F1. 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 $1.50 to $1.555. 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. F2. 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 $1.50 to $1.56. 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. F3. 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 $1.50 to $1.52. 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. F4. 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. F5. Damian R. Beauchamp ("Mr. Beauchamp") independently indirectly owns approximately 63.70% 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.

Key Figures

Shares sold on 2026-07-21: 80,000 shares Shares sold on 2026-07-22: 90,000 shares Shares sold on 2026-07-23: 39,142 shares +7 more

10 metrics

Shares sold on 2026-07-21 80,000 shares Open-market sale of NET Power Class A Common Stock by NPEH, LLC

Shares sold on 2026-07-22 90,000 shares Open-market sale of NET Power Class A Common Stock by NPEH, LLC

Shares sold on 2026-07-23 39,142 shares Open-market sale of NET Power Class A Common Stock by NPEH, LLC

Total shares sold 209,142 shares Aggregate of three reported sales; transaction summary shows 209142 shares sold

Weighted avg price 2026-07-21 $1.5300 per share Weighted average sale price; trades ranged from $1.50 to $1.555 per share

Weighted avg price 2026-07-22 $1.5258 per share Weighted average sale price; trades ranged from $1.50 to $1.56 per share

Weighted avg price 2026-07-23 $1.5066 per share Weighted average sale price; trades ranged from $1.50 to $1.52 per share

8 Rivers equity interest in NPEH 90.9% 8 Rivers Capital holds approximately 90.9% of NPEH’s outstanding equity

Beauchamp indirect ownership of 8 Rivers 63.70% Damian R. Beauchamp independently indirectly owns approximately 63.70% of 8 Rivers

Beauchamp direct ownership of 8 Rivers 3.83% Damian R. Beauchamp directly owns approximately 3.83% of 8 Rivers

Key Terms

weighted average sales price, beneficial owner, pecuniary interest, indirect beneficial owner, +1 more

5 terms

weighted average sales price financial

"The price reported reflects the weighted average sales price."

beneficial owner regulatory

"8 Rivers ... may be deemed to be a beneficial owner of the securities"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

pecuniary interest financial

"disclaims beneficial ownership ... except to the extent of its pecuniary interest therein"

indirect beneficial owner regulatory

"Mr. Beauchamp may be deemed the indirect beneficial owner of the securities"

Section 16 regulatory

"for purposes of Section 16 or otherwise."

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did NET Power (NPWR) disclose for July 21–23, 2026?

NET Power (NPWR) disclosed that NPEH, LLC sold a total of 209,142 Class A shares in three open-market transactions from July 21–23, 2026 at weighted average prices with trade ranges between $1.50 and $1.56 per share.

Who executed the recent NET Power (NPWR) share sales reported on Form 4?

The sales were executed by NPEH, LLC, which directly owns the NET Power Class A shares. 8 Rivers Capital, LLC manages NPEH and, along with Damian R. Beauchamp, may be deemed an indirect beneficial owner, subject to pecuniary interest limitations and related disclaimers.

How many NET Power (NPWR) shares were sold in each reported transaction?

NPEH, LLC sold 80,000 shares on July 21, 90,000 shares on July 22, and 39,142 shares on July 23, 2026. All involved Class A Common Stock and were reported as open-market or private sale transactions on Form 4.

At what prices were NET Power (NPWR) shares sold in the latest insider transactions?

The reported weighted average sale prices were $1.5300, $1.5258, and $1.5066 per share. Footnotes state individual trades occurred in ranges from $1.50 to between $1.52 and $1.56, with detailed breakdowns available on request.

How is 8 Rivers Capital related to the NET Power (NPWR) shares sold by NPEH, LLC?

8 Rivers Capital holds approximately 90.9% of NPEH’s equity and serves as its manager, so it may be deemed a beneficial owner of NPEH’s NET Power shares. However, 8 Rivers disclaims beneficial ownership beyond its pecuniary interest in those securities.

What is Damian R. Beauchamp’s indirect interest in NET Power (NPWR) through 8 Rivers?

Damian R. Beauchamp indirectly owns about 63.70% of 8 Rivers and directly owns about 3.83% of it. He may be deemed an indirect beneficial owner of NET Power shares held by NPEH, but disclaims beneficial ownership beyond his pecuniary interest.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/23/2026 - 07:40 PM EDT Learn about SEC filing dates

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^*

8 Rivers Capital, LLC

(Last) (First) (Middle)

406 BLACKWELL STREET, 4TH FLOOR

(Street)

DURHAM NORTH CAROLINA 27701

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/21/2026

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

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

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

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	07/21/2026		S		80,000	D	$1.53(1)	2,885,000	I	By: NPEH, LLC(4)(5)
Class A Common Stock	07/22/2026		S		90,000	D	$1.5258(2)	2,795,000	I	By: NPEH, LLC(4)(5)
Class A Common Stock	07/23/2026		S		39,142	D	$1.5066(3)	2,755,858	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 NORTH CAROLINA 27701

(City) (State) (Zip)

UNITED STATES

(Country)

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 NORTH CAROLINA 27701

(City) (State) (Zip)

UNITED STATES

(Country)

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 $1.50 to $1.555. 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 $1.50 to $1.56. 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 $1.50 to $1.52. 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 63.70% 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	07/23/2026
	By: /s/ Damian R. Beauchamp	07/23/2026
	** 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.
* Form 4: SEC 1474 (03-26)