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NET POWER INC (NPWR)

Institutional ownership, SEC filings and insider activity

Sector: Industry · SEC CIK 0001845437 · EDGAR filings · Updated 2026-07-23

NET POWER INC (NPWR) has reported institutional ownership of 41.2%, with 113 institutional managers holding positions valued at $55.0M per the latest 13F reporting period. SEC filings include an active non-reliance notice on previously issued financial statements (8-K Item 4.02), substantial-doubt (going concern) disclosure per the filings.

Institutional ownership
41.2%
Institutional managers
113
Reported 13F value
$55.0M
Insider activity
117 trans.
−$40.7M net selling
Data flags
2 active
from SEC filings

Filings this week (2)

Every filing links to the official SEC document. Real-time filing alerts for this company are available inside the app.

Latest updates

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, NET POWER INC has 113 institutional holders and institutional ownership of 41.2%.

Insider activity

Insiders reported 117 transactions (0 buys, 94 sells) across 13 reporting insiders, with a net reported value of −$40.7M.

Data flags from SEC filings

Active substantial-doubt (going concern) disclosure per the filings, most recently filed 2023-05-12 (recurring since 2022-08-15) — source filing. The authoritative details are those stated in the filing itself.
Active non-reliance notice on previously issued financial statements (8-K Item 4.02), most recently filed 2022-02-24 (recurring since 2022-02-24) — source filing. The authoritative details are those stated in the filing itself.

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See full history, cross-references and alerts on Sightfile
Sightfile provides information only — not investment advice, recommendations, or an assessment of any security. Data is derived from official public sources (SEC EDGAR and U.S. government agencies), may contain errors or delays, and should be verified against the source filing before relying on it.
Data sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-23.