NET Power Inc. (NPWR) Insider Trading
Over the last 3 months, NPWR insiders made 0 open-market buys and 34 sales, a net sale of -$6.6M (SEC Form 4). Over the last 6 months, 41 institutions increased and 33 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
34
Net (3m)
-$6.6M
Insider trades by month Buys Sells
Jan
Feb
Mar
May
Jul
Aug
Context3-month price -12.4%Institutions reducing (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 31, 2026 | Alexander Ralphdirector | Grant | 71,770 | — |
| Aug 31, 2026 | Veltmann Alejandradirector | Grant | 71,770 | — |
| Aug 31, 2026 | PETERSON CAROL R.director | Grant | 71,770 | — |
| Aug 31, 2026 | Kelliher Joseph Tdirector | Grant | 71,770 | — |
| Aug 27, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 201,550 | $1.91 |
| Aug 27, 2026 | NPEH, LLC10 percent owner | Sell | 201,550 | $1.91 |
| Aug 27, 2026 | NPEH, LLC10 percent owner | Sell | 41,350 | $1.91 |
| Aug 27, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 41,350 | $1.91 |
| Aug 14, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 50,000 | $1.63 |
| Aug 14, 2026 | NPEH, LLC10 percent owner | Sell | 50,000 | $1.63 |
| Aug 14, 2026 | NPEH, LLC10 percent owner | Sell | 200,000 | $1.62 |
| Aug 14, 2026 | NPEH, LLC10 percent owner | Sell | 507,100 | $1.95 |
| Aug 14, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 507,100 | $1.95 |
| Aug 14, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 200,000 | $1.62 |
| Aug 11, 2026 | NPEH, LLC10 percent owner | Sell | 55,400 | $1.55 |
| Aug 11, 2026 | NPEH, LLC10 percent owner | Sell | 35,000 | $1.60 |
| Aug 11, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 60,345 | $1.53 |
| Aug 11, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 55,400 | $1.55 |
| Aug 11, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 35,000 | $1.60 |
| Aug 11, 2026 | NPEH, LLC10 percent owner | Sell | 60,345 | $1.53 |
| Aug 6, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 140,000 | $1.51 |
| Aug 6, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 89,255 | $1.51 |
| Aug 6, 2026 | NPEH, LLC10 percent owner | Sell | 120,000 | $1.54 |
| Aug 6, 2026 | NPEH, LLC10 percent owner | Sell | 140,000 | $1.51 |
| Aug 6, 2026 | NPEH, LLC10 percent owner | Sell | 89,255 | $1.51 |
| Aug 6, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 120,000 | $1.54 |
| Jul 30, 2026 | NPEH, LLC10 percent owner | Sell | 45,000 | $1.41 |
| Jul 30, 2026 | NPEH, LLC10 percent owner | Sell | 155,000 | $1.43 |
| Jul 30, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 55,858 | $1.47 |
| Jul 30, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 45,000 | $1.41 |
Source: NPWR SEC Form 4 filings, latest Aug 31, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their NPWR positions over the last 6 months (SEC Form 13F).
Increased
41
New positions
18
Reduced
33
Sold out
113
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| SHARE ANDREW L. | Unchanged | 9.8M | Apr 28, 2026 |
| HITE HEDGE ASSET MANAGEMENT LLC | Increased | 2.8M | May 15, 2026 |
| PEAK6 LLC | Reduced | 2.3M | May 14, 2026 |
| BLACKROCK, INC. | Increased | 2.1M | May 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1.6M | May 15, 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Unchanged | 1.5M | May 15, 2026 |
| SOURCEROCK GROUP LLC | Increased | 1.5M | May 15, 2026 |
| PEAK6 LLC | Increased | 1.3M | Mar 12, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 1.1M | May 15, 2026 |
| COHEN & STEERS, INC. | Reduced | 892K | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 860K | May 15, 2026 |
| ARGENTARII, LLC | Increased | 749K | May 12, 2026 |
| NUVEEN, LLC | Increased | 714K | Apr 30, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 704K | May 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | Reduced | 683K | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.