Npeh, Llc - Oct 14, 2025 Form 4 Insider Report for NET Power Inc. (NPWR)

Role
10%+ Owner
Signature
/s/ Min Lee, General Counsel of 8 Rivers Capital, LLC, its Manager
Stock symbol
NPWR
Transactions as of
Oct 14, 2025
Transactions value $
-$1,147,219
Form type
4
Date filed
10/16/2025, 09:02 PM
Previous filing
Nov 26, 2024
Next filing
Oct 22, 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 /s/ Min Lee, General Counsel of 8 Rivers Capital, LLC, its Manager 2025-10-16 0001981772

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NPWR Class A Common Stock Conversion of derivative security +4M 4M Oct 14, 2025 Direct F1
transaction NPWR Class B Common Stock Other -4M -14.96% 22.7M Oct 14, 2025 Direct F2
transaction NPWR Class A Common Stock Sale -$483K -100K -2.5% $4.83 3.9M Oct 15, 2025 Direct F3
transaction NPWR Class A Common Stock Sale -$598K -123K -3.14% $4.88 3.78M Oct 15, 2025 Direct F4
transaction NPWR Class A Common Stock Sale -$65.7K -14K -0.37% $4.71 3.76M Oct 16, 2025 Direct F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction NPWR Class A Units of NET Power Operations LLC Conversion of derivative security -4M -14.96% 22.7M Oct 14, 2025 Class A Common Stock 4M Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of NET Power Operations LLC for 4,000,000 shares of the Issuer's Class A Common Stock.
F2 For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 4,000,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which have no economic value, were cancelled.
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 $4.67 to $4.93. 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.
F4 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 $4.85 to $4.925. 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.
F5 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 $4.50 to $4.83. 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.