NET Power board amends Marc Horstman's option terms; 240,000 shares at $2.13 exercisable longer after exit

NET Power Inc.

Board approved Nov 4, 2026 the Option Amendment the Compensation Committee adopted in October 2026, applying it to President and COO Marc Horstman's stock option.
Horstman's option covers 240,000 Class A shares at $2.13, granted June 2, 2025, fully vested June 2, 2026 and expiring June 2, 2030; share count, strike and vesting unchanged.
Under the amendment, an other-than-cause termination keeps the option vesting on schedule and exercisable until expiration; resignation exercise window rises to 90 days from 30.
Termination for cause still forfeits the option whether or not vested; death and disability treatment unchanged. Amendment to be filed with the Form 10-Q for the quarter ended Sept 30, 2026.
Applies to time-vesting options on the standard form under the NET Power Inc. 2023 Omnibus Incentive Plan, excluding holders who resigned before the committee adopted it.

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