NET Power Inc. — Director's Dealing 2025

Jun 5, 2025

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: NET Power Inc. (NPWR)
CIK: 0001845437
Period of Report: 2025-04-15

Reporting Person: Horstman Marc (Chief Operating Officer)

Holdings (Non-Derivative)

Security	Shares	Ownership
Restricted Stock Units	165814	Direct
Class A Common Stock	1845	Direct

Footnotes

F1: On August 28, 2023, the Reporting Person recieved a grant of 20,000 restricted stock units ("RSUs") that vest on August 28, 2026, subject to continued employment. On April 2, 2024, the Reporting Person received a grant of 8,442 RSUs, of which 5,527 RSUs are still outstanding and will vest in equal installments on each of April 2, 2026 and April 2, 2027, subject to continued employment. On April 2, 2025, the Reporting Person received a grant of 46,729 RSUs that will vest in equal installments on each of April 2, 2026, April 2, 2027 and April 2, 2028, subejct to continued employment. On April 2, 2025, the Reporting Person also received a grant of 93,458 RSUs that will vest on April 2, 2028, subject to continued employment.