X0609 4 2026-04-13 0 0001845437 Net Power Inc. NPWR 0002137194 Shuman Ned Leland false C/O NET POWER INC. 11700 KATY FREEWAY, SUITE 700 HOUSTON TX 77079 0 1 0 0 Chief Financial Officer 0 Restricted Stock Units 2026-04-13 4 A 0 529801 0 A 529801 D Represents restricted stock units granted on April 13, 2026 under the NET Power Inc. 2023 Omnibus Incentive Plan. Each restricted stock unit represents the right to receive one share of Class A common stock of the Issuer. The restricted stock units vest in full on April 13, 2029, subject to continued employment of the reporting person through that date and to accelerated vesting in certain circumstances. The reporting person became Chief Financial Officer of the Issuer effective April 13, 2026. The restricted stock units reported on this Form 4 are the same units reported as a holding on the Form 3 filed by the reporting person on May 27, 2026, and are not in addition to them. Due to administrative oversight, this Form 4 is being filed late. Exhibit 24, Power of Attorney. /s/ Ron Rucker, as Attorney-in-Fact for Ned Leland Shuman 2026-10-08