NET Power extends COO Horstman's stock option exercise rights after termination without cause

• Net Power’s board approved amended stock option terms for President and Chief Operating Officer Marc Horstman on November 4, 2026.
• Covered options continue vesting following company termination without cause, remaining exercisable to the extent vested until their expiration dates.
• Resigning holders now have 90 days, versus 30 previously, to exercise vested options, subject to expiration; termination for cause cancels options.
• Horstman’s option covers 240,000 Class A Common Stock shares at $2.13 per share; it expires June 2, 2030.
• Granted June 2, 2025, his option became fully vested June 2, 2026; the amendment leaves existing exercise prices and expiration dates unchanged.

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: 0001104659-26-124814), on November 10, 2026, and is solely responsible for the information contained therein.