NPWR

NET Power Inc. · Manufacturing · Market cap $170.6M

Insiders sold $6.6M net in the last 90 days ·2 sellers, 0 buyers· latest Form 4 filed Aug 27, 2026

Insider Buying

$0

reported purchases (SEC code P)

Insider Selling

$42.9M

reported sales (SEC code S)

Unique Insiders

3

in the rolling window

Latest filing

Aug 31, 2026

8 Rivers Capital, LLC

NET Power Inc. (NPWR) has 63 SEC Form 4 filings (151 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Aug 31, 2026.

Inside the rolling window, 3 insiders at NET Power Inc. reported no open-market purchases and 127 open-market sales totaling $42.9M. The most active filer is 10% Owner 8 Rivers Capital, LLC with 63 filings. Insiders have net sold $9.1M over the trailing 6 months. The most recent open-market filing is a sale of 201,550 shares by 10% Owner 8 Rivers Capital, LLC, dated Aug 25, 2026, worth $384K.

  • Industry:Industrial - Machinery
  • CEO:Daniel Joseph Rice
  • Employees:54
  • HQ:Durham, NC, US
  • IPO:2021-08-06
Source
Sale$384KAug 27SEC ↗
Sale$79KAug 27SEC ↗
Sale$384KAug 27SEC ↗
Sale$79KAug 27SEC ↗
Sale$82KAug 14SEC ↗
Sale$324KAug 14SEC ↗
Sale$991KAug 14SEC ↗
Sale$82KAug 14SEC ↗
Sale$324KAug 14SEC ↗
Sale$991KAug 14SEC ↗
Sale$92KAug 11SEC ↗
Sale$86KAug 11SEC ↗
Sale$56KAug 11SEC ↗
Sale$92KAug 11SEC ↗
Sale$86KAug 11SEC ↗
Sale$56KAug 11SEC ↗
Sale$185KAug 6SEC ↗
Sale$211KAug 6SEC ↗
Sale$134KAug 6SEC ↗
Sale$185KAug 6SEC ↗
Sale$211KAug 6SEC ↗
Sale$134KAug 6SEC ↗
Sale$82KJul 30SEC ↗
Sale$63KJul 30SEC ↗
Sale$221KJul 30SEC ↗
Showing 1–25 of 127
1 / 6

Earnings: last 7 quarters

EstimatedActual

Frequently asked questions

How many SEC Form 4 insider filings does NPWR have?

NET Power Inc. (NPWR) has 63 SEC Form 4 filings (151 transaction rows) in the rolling 365-day window, disclosed by 3 distinct insiders. Most recent filing: Aug 31, 2026.

When was the most recent SEC Form 4 filing for NPWR?

The most recent Form 4 filing for NPWR on Tracefour is dated Aug 31, 2026.

Who is the most active insider at NPWR?

The most active SEC Form 4 filer at NPWR in the rolling window is 10% Owner 8 Rivers Capital, LLC, with 63 filings.

What is the net insider flow at NPWR over the last 6 months?

Over the trailing 180 days, insiders at NPWR have net sold $9.1M based on SEC Form 4 disclosures.

What is the total insider buy and sell value at NPWR in the current window?

Inside the rolling window, insiders at NPWR bought $0 and sold $42.9M based on SEC Form 4 filings.

Can I get alerts for NPWR insider trading?

Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at NET Power Inc. (NPWR). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.

Related companies

NET Power Inc. is in the Manufacturing sector.