NET Power Inc. (NPWR) Insider Trading
Over the last 3 months, NPWR insiders made 0 open-market buys and 4 sales, a net sale of -$2.1M (SEC Form 4). Over the last 6 months, 73 institutions increased and 68 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
4
Net (3m)
-$2.1M
Insider trades by month Buys Sells
Nov
Dec
Jan
Feb
Mar
May
Context3-month price -5.9%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 14, 2026 | NPEH, LLC10 percent owner | Sell | 35,000 | $2.43 |
| May 14, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 35,000 | $2.43 |
| May 14, 2026 | NPEH, LLC10 percent owner | Sell | 400,000 | $2.44 |
| May 14, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 400,000 | $2.44 |
| Mar 5, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 100,000 | $2.04 |
| Mar 5, 2026 | NPEH, LLC10 percent owner | Sell | 100,000 | $2.04 |
| Mar 2, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 1,881 | $2.00 |
| Mar 2, 2026 | NPEH, LLC10 percent owner | Sell | 1,881 | $2.00 |
| Mar 2, 2026 | NPEH, LLC10 percent owner | Sell | 79,858 | $2.05 |
| Mar 2, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 4,744 | $2.00 |
| Mar 2, 2026 | NPEH, LLC10 percent owner | Sell | 4,744 | $2.00 |
| Mar 2, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 79,858 | $2.05 |
| Feb 23, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 63,517 | $2.03 |
| Feb 23, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 125,000 | $2.14 |
| Feb 23, 2026 | NPEH, LLC10 percent owner | Sell | 125,000 | $2.14 |
| Feb 23, 2026 | NPEH, LLC10 percent owner | Sell | 63,517 | $2.03 |
| Feb 18, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 100,000 | $2.14 |
| Feb 18, 2026 | NPEH, LLC10 percent owner | Sell | 75,000 | $2.07 |
| Feb 18, 2026 | NPEH, LLC10 percent owner | Sell | 100,000 | $2.14 |
| Feb 18, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 75,000 | $2.07 |
| Feb 12, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 150,000 | $2.03 |
| Feb 12, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 60,000 | $2.02 |
| Feb 12, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 40,000 | $2.08 |
| Feb 12, 2026 | NPEH, LLC10 percent owner | Sell | 150,000 | $2.03 |
| Feb 12, 2026 | NPEH, LLC10 percent owner | Sell | 60,000 | $2.02 |
| Feb 12, 2026 | NPEH, LLC10 percent owner | Sell | 40,000 | $2.08 |
| Feb 2, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 54,780 | $2.35 |
| Feb 2, 2026 | NPEH, LLC10 percent owner | Sell | 54,780 | $2.35 |
| Jan 28, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 100,000 | $2.38 |
| Jan 28, 2026 | 8 Rivers Capital, LLC10 percent owner | Sell | 65,220 | $2.38 |
Source: NPWR SEC Form 4 filings, latest May 14, 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
73
New positions
41
Reduced
68
Sold out
26
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| SHARE ANDREW L. | Reduced | 9.8M | Feb 13, 2026 |
| SHARE ANDREW L. | Unchanged | 9.8M | Apr 28, 2026 |
| HITE HEDGE ASSET MANAGEMENT LLC | Increased | 2.8M | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | Reduced | 2.3M | Feb 17, 2026 |
| BLACKROCK, INC. | Increased | 2.1M | May 13, 2026 |
| VANGUARD GROUP INC | Increased | 2.0M | Jan 29, 2026 |
| BLACKROCK, INC. | Reduced | 2.0M | Feb 12, 2026 |
| PEAK6 LLC | Increased | 2.0M | May 14, 2026 |
| CENTERBOOK PARTNERS LP | Increased | 1.8M | Feb 11, 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 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | 1.5M | Feb 17, 2026 |
| SOURCEROCK GROUP LLC | Increased | 1.5M | May 15, 2026 |
| SOURCEROCK GROUP LLC | New Position | 1.5M | Feb 13, 2026 |
| PEAK6 LLC | Increased | 1.3M | Mar 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.