Net Power insider entity sells 757,100 NPWR shares

Net Power Inc. (NPWR) reported that shares of Class A Common Stock were sold indirectly on behalf of NPEH, LLC over three days in August 2026.

Rhea-AI Filing Summary

Net Power Inc. (NPWR) reported that shares of Class A Common Stock were sold indirectly on behalf of NPEH, LLC over three days in August 2026. NPEH sold 50,000 shares on August 12 at a weighted average price of $1.6315, 200,000 shares on August 13 at $1.6192, and 507,100 shares on August 14 at $1.9533, each in multiple trades across stated price ranges. The reporting persons 8 Rivers Capital, LLC and Damian R. Beauchamp may be deemed indirect beneficial owners through their interests in NPEH and 8 Rivers, but each disclaims beneficial ownership beyond their pecuniary interest.

Insider Trade Summary

Net Seller: 757,100 shares

Net Sell 3 txns

Insider 8 Rivers Capital, LLC, BEAUCHAMP DAMIAN R.

Role 10% Owner | 10% Owner

Sold 757,100 shs ($1.40M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F3, F4, F5	507,100	$1.9533	$991K
Sale	Class A Common Stock F2, F4, F5	200,000	$1.6192	$324K
Sale	Class A Common Stock F1, F4, F5	50,000	$1.6315	$82K

Holdings After Transaction: Class A Common Stock — 1,242,900 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 $1.62 to $1.665. 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 $1.585 to $1.65. 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 $1.85 to $2.06. 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

Total shares sold: 757,100 shares Shares sold 2026-08-12: 50,000 shares Shares sold 2026-08-13: 200,000 shares +5 more

8 metrics

Total shares sold 757,100 shares Aggregate indirect sales by NPEH, LLC from August 12–14, 2026

Shares sold 2026-08-12 50,000 shares Class A Common Stock sold indirectly by NPEH, LLC at weighted average $1.6315

Shares sold 2026-08-13 200,000 shares Class A Common Stock sold indirectly by NPEH, LLC at weighted average $1.6192

Shares sold 2026-08-14 507,100 shares Class A Common Stock sold indirectly by NPEH, LLC at weighted average $1.9533

Price range Aug 12 trades $1.62–$1.665 Footnote F1 range for August 12, 2026 sales

Price range Aug 13 trades $1.585–$1.65 Footnote F2 range for August 13, 2026 sales

Price range Aug 14 trades $1.85–$2.06 Footnote F3 range for August 14, 2026 sales

8 Rivers ownership of NPEH approximately 90.9% Equity interest in NPEH held by 8 Rivers Capital, LLC

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 financial

"may be deemed to be a beneficial owner of the securities directly owned"

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 of any such securities, except to the extent of its pecuniary interest"

indirect beneficial owner financial

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

indirect ownership financial

"direct_or_indirect: "I" with nature_of_ownership "By: NPEH, LLC""

FAQ

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

What insider transactions did Net Power Inc. (NPWR) report in this Form 4?

Net Power reported three indirect sales of Class A Common Stock by NPEH, LLC totaling 757,100 shares between August 12 and 14, 2026, at weighted average prices between $1.6192 and $1.9533 per share in multiple trades.

Who is the reporting person in Net Power (NPWR) Form 4 and who actually sold the shares?

The reporting persons are 8 Rivers Capital, LLC and Damian R. Beauchamp. The shares were held and sold by NPEH, LLC, with the ownership reported as indirect through NPEH.

At what prices were Net Power (NPWR) shares sold in the August 2026 insider transactions?

The Form 4 reports weighted average sale prices of $1.6315, $1.6192, and $1.9533 per share. Footnotes state actual trades occurred in ranges from $1.585 to $2.06, with detailed trade data available on request.

How many Net Power (NPWR) shares were sold on each date in the Form 4?

NPEH, LLC sold 50,000 shares on August 12, 200,000 shares on August 13, and 507,100 shares on August 14, 2026. All sales involved Class A Common Stock held indirectly.

What beneficial ownership disclaimers are included in the Net Power (NPWR) Form 4?

8 Rivers, as manager and 90.9% equity holder of NPEH, and Damian R. Beauchamp, as an indirect and direct owner of 8 Rivers, each may be deemed indirect beneficial owners but disclaim beneficial ownership beyond their pecuniary interests.

Were the Net Power (NPWR) insider sales made under a Rule 10b5-1 trading plan?

The Form 4’s Rule 10b5-1 checkbox is not checked, and the footnotes do not reference any trading plan. The sales are reported simply as open market or private transactions.

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

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Accepted by SEC EDGAR 08/14/2026 - 06:00 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)
08/12/2026

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	08/12/2026		S		50,000	D	$1.6315(1)	1,950,000	I	By: NPEH, LLC(4)(5)
Class A Common Stock	08/13/2026		S		200,000	D	$1.6192(2)	1,750,000	I	By: NPEH, LLC(4)(5)
Class A Common Stock	08/14/2026		S		507,100	D	$1.9533(3)	1,242,900	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 $1.62 to $1.665. 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 $1.585 to $1.65. 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 $1.85 to $2.06. 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	08/14/2026
	By: /s/ Damian R. Beauchamp	08/14/2026
	** 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)