NPEH, LLC - 19 Dec 2025 Form 4 Insider Report for NET Power Inc. (NPWR)

Role
10%+ Owner
Signature
By: /s/ Min Lee, General Counsel of 8 Rivers Capital, LLC, its Manager
Issuer symbol
NPWR
Transactions as of
19 Dec 2025
Transactions value $
-$742,428
Form type
4
Filing time
23 Dec 2025, 17:19:31 UTC
Previous filing
02 Dec 2025
Next filing
29 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
NPEH, LLC 10%+ Owner 406 BLACKWELL STREET, 4TH FLOOR, DURHAM By: /s/ Min Lee, General Counsel of 8 Rivers Capital, LLC, its Manager 23 Dec 2025 0001981772

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NPWR Class A Common Stock Sale -$234,310 -100,000 -3.9% $2.34 2,450,000 19 Dec 2025 Direct F1
transaction NPWR Class A Common Stock Sale -$226,460 -100,000 -4.1% $2.26 2,350,000 22 Dec 2025 Direct F2
transaction NPWR Class A Common Stock Sale -$281,658 -130,000 -5.5% $2.17 2,220,000 23 Dec 2025 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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 $2.305 to $2.425. 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.
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 $2.21 to $2.35. 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.
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 $2.13 to $2.235. 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.