Marc Horstman - 15 Apr 2025 Form 3 Insider Report for NET Power Inc. (NPWR)

Reporting relationship: Chief Operating Officer
Issuer ticker: NPWR
Reported as of: 15 Apr 2025
Net transaction value: $0
SEC form: 3
Accepted by SEC: 04 Jun 2025, 21:13:43 UTC
Next SEC filing: 04 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Marc Horstman

Key filing fact

Marc Horstman filed Form 3 for NET Power Inc. (NPWR) on 04 Jun 2025.

Key facts

This page summarizes Marc Horstman's Form 3 filing for NET Power Inc. (NPWR).
0 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 04 Jun 2025, 21:13.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0002070734 Primary reporting owner

Horstman Marc

Relationship: Chief Operating Officer
Address: 320 RONEY STREET, SUITE 200, DURHAM
Signature: /s/ Marc Horstman
Signature date: 03 Jun 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NPWR holding

Restricted Stock Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 165,814
Date: 15 Apr 2025
Ownership: Direct
Footnotes: F1

NPWR holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,845
Date: 15 Apr 2025
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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.