NPEH, LLC - 06 Mar 2026 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
06 Mar 2026
Net transactions value
$0
Form type
4
Filing time
10 Mar 2026, 18:01:11 UTC
Previous filing
05 Mar 2026
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 10 Mar 2026 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 +3,000,000 +750% 3,400,000 06 Mar 2026 Direct F1
transaction NPWR Class B Common Stock Other -3,000,000 -14% 17,729,880 06 Mar 2026 Direct F2
* 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 March 6, 2026, NPEH exchanged 3,000,000 Class A Units of NET Power Operations LLC for 3,000,000 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 3,000,000 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.