• NPEH, LLC, 10% owner, cut stake in Net Power via open-market sales of Class A common stock on May 12-13.
• Sold 400,000 shares at weighted average price USD 2.44 on May 12.
• Disposed of another 35,000 shares at weighted average price USD 2.43 on May 13.
• Beneficial ownership fell to 2,965,000 shares following transactions.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Net Power Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001104659-26-061387), on May 14, 2026, and is solely responsible for the information contained therein.