NYSE · CIK 0001845437
NPWR NET Power Inc.
Insider trading from SEC Form 4. Last filing 5 d ago. Close $1.23 on Oct 9, 2026, 0% from the 52-week low and -75% from the high.
NET Power Inc. (NPWR) has 69 SEC Form 4 filings on file from 7 insiders, the latest filed on Oct 8, 2026. In the last 90 days insiders made 0 open-market buys worth $0 and 2 open-market sells worth $939k, net -$939k.
56 open-market trades have been scored at NPWR. The newest: 8 Rivers Capital, LLC (10% owner) sold $470k of stock on Sep 8, 2026, filed Sep 10, 2026, scored 47 (moderate). The largest of the 50 shown: Sk Inc. (10% owner) sold $6.5M on Jul 15, 2025, scored 57 (moderate). 2 insiders sold within 14 days of each other around Sep 8, 2026.
NPWR closed at $1.23 on Oct 9, 2026, 0% above its 52-week low and 75% below its 52-week high.
4 Form 144 notices of planned sales are on file, the latest filed May 30, 2025.
Last 90 days
Net insider value
-$939k
more sold than bought
Buys
0
$0 by 0 insiders
Sells
2
$939k by 2 insiders
Insiders on file
7
with a Form 4 at this company
Price and insider trades, last year
NPWROct 9, 2026 · close 1.23
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at NET Power Inc., scored: the newest 50 of 56.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 47Moderate | 8 Rivers Capital, LLC owner sell | $470k 250,000 shares | -25% | +40% from low-61% from high | |
| 47Moderate | Npeh, LLC owner sell | $470k 250,000 shares | -25% | +40% from low-61% from high | |
| 42Moderate | 8 Rivers Capital, LLC owner sell | $1.1M 435,000 shares | -13% | +66% from low-49% from high | |
| 37Weak | 8 Rivers Capital, LLC owner sell | $204k 100,000 shares | -20% | +35% from low-71% from high | |
| 37Weak | Npeh, LLC owner sell | $204k 100,000 shares | -20% | +35% from low-71% from high | |
| 37Weak | 8 Rivers Capital, LLC owner sell | $177k 86,483 shares | -15% | +31% from low-74% from high | |
| 37Weak | Npeh, LLC owner sell | $177k 86,483 shares | -15% | +31% from low-74% from high | |
| 41Moderate | 8 Rivers Capital, LLC owner sell | $397k 188,517 shares | -24% | +45% from low-73% from high | |
| 41Moderate | Npeh, LLC owner sell | $397k 188,517 shares | -24% | +45% from low-73% from high | |
| 40Moderate | 8 Rivers Capital, LLC owner sell | $369k 175,000 shares | -18% | +42% from low-74% from high | |
| 40Moderate | Npeh, LLC owner sell | $369k 175,000 shares | -18% | +42% from low-74% from high | |
| 43Moderate | 8 Rivers Capital, LLC owner sell | $509k 250,000 shares | -21% | +35% from low-76% from high | |
| 43Moderate | Npeh, LLC owner sell | $509k 250,000 shares | -21% | +35% from low-76% from high | |
| 31Weak | 8 Rivers Capital, LLC owner sell | $129k 54,780 shares | -4% | +60% from low-72% from high | |
| 31Weak | Npeh, LLC owner sell | $129k 54,780 shares | -4% | +60% from low-72% from high | |
| 46Moderate | 8 Rivers Capital, LLC owner sell | $700k 295,220 shares | -19% | +57% from low-73% from high | |
| 46Moderate | Npeh, LLC owner sell | $700k 295,220 shares | -19% | +57% from low-73% from high | |
| 50Moderate | 8 Rivers Capital, LLC owner sell | $1.3M 500,000 shares | -24% | +83% from low-73% from high | |
| 50Moderate | Npeh, LLC owner sell | $1.3M 500,000 shares | -24% | +83% from low-73% from high | |
| 36Weak | 8 Rivers Capital, LLC owner sell | $376k 170,000 shares | -8% | +48% from low-80% from high | |
| 36Weak | Npeh, LLC owner sell | $376k 170,000 shares | -8% | +48% from low-80% from high | |
| 46Moderate | 8 Rivers Capital, LLC owner sell | $742k 330,000 shares | -13% | +55% from low-79% from high | |
| 46Moderate | Npeh, LLC owner sell | $742k 330,000 shares | -13% | +55% from low-79% from high | |
| 30Weak | 8 Rivers Capital, LLC owner sell | $113k 40,000 shares | -2% | +86% from low-75% from high | |
| 30Weak | Npeh, LLC owner sell | $113k 40,000 shares | -2% | +86% from low-75% from high | |
| 48Moderate | 8 Rivers Capital, LLC owner sell | $890k 310,000 shares | -11% | +95% from low-74% from high | |
| 48Moderate | Npeh, LLC owner sell | $890k 310,000 shares | -11% | +95% from low-74% from high | |
| 39Weak | 8 Rivers Capital, LLC owner sell | $587k 200,000 shares | -6% | +93% from low-77% from high | |
| 39Weak | Npeh, LLC owner sell | $587k 200,000 shares | -6% | +93% from low-77% from high | |
| 36Weak | 8 Rivers Capital, LLC owner sell | $388k 150,000 shares | -5% | +63% from low-82% from high | |
| 36Weak | Npeh, LLC owner sell | $388k 150,000 shares | -5% | +63% from low-82% from high | |
| 50Moderate | 8 Rivers Capital, LLC owner sell | $1.6M 588,653 shares | -15% | +85% from low-79% from high | |
| 50Moderate | Npeh, LLC owner sell | $1.6M 588,653 shares | -15% | +85% from low-79% from high | |
| 37Weak | 8 Rivers Capital, LLC owner sell | $107k 26,593 shares | -1% | +155% from low-71% from high | |
| 35Weak | Cynda Beauchamp owner sell | $73k 18,116 shares | -1% | +155% from low-71% from high | |
| 37Weak | Npeh, LLC owner sell | $107k 26,593 shares | -1% | +155% from low-71% from high | |
| 62Notable | 8 Rivers Capital, LLC owner sell | $3.7M 902,171 shares | -33% | +130% from low-74% from high | |
| 62Notable | Npeh, LLC owner sell | $3.7M 902,171 shares | -33% | +130% from low-74% from high | |
| 57Moderate | 8 Rivers Capital, LLC owner sell | $1.9M 516,683 shares | -16% | +139% from low-73% from high | |
| 57Moderate | Npeh, LLC owner sell | $1.9M 516,683 shares | -16% | +139% from low-73% from high | |
| 57Moderate | 8 Rivers Capital, LLC owner sell | $1.7M 479,300 shares | -13% | +135% from low-74% from high | |
| 57Moderate | Npeh, LLC owner sell | $1.7M 479,300 shares | -13% | +135% from low-74% from high | |
| 45Moderate | 8 Rivers Capital, LLC owner sell | $1.1M 236,600 shares | -6% | +223% from low-64% from high | |
| 45Moderate | Npeh, LLC owner sell | $1.1M 236,600 shares | -6% | +223% from low-64% from high | |
| 57Moderate | Sk Inc. owner sell | $6.5M 2,500,000 shares | -100% | +96% from low-78% from high | |
| 33Weak | Kelly Rosser Chief Accounting Officer sell | $2,531 1,127 shares | -31% | 0% from low-83% from high | |
| 30Weak | Akash S. Patel Chief Financial Officer sell | $17k 7,359 shares | -100% | 0% from low-83% from high | |
| 72Notable | 8 Rivers Capital, LLC owner sell | $5.5M 431,009 shares | -100% | - | |
| 72Notable | Npeh, LLC owner sell | $5.5M 431,009 shares | -100% | - | |
| 62Notable | Akash S. Patel Chief Financial Officer sell | $1.9M 150,000 shares | -100% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| May 30, 2025 | AKASH PATEL Former affiliate | 35,458 0.05% of outstanding | $82k | May 30, 2025 | $17k |
| Apr 3, 2025 | AKASH PATEL Officer | 7,359 0.01% of outstanding | $18k | Apr 3, 2025 | none |
| Nov 22, 2024 | AKASH PATEL Officer | 150,000 0.20% of outstanding | $1.9M | Nov 22, 2024 | none |
| Nov 19, 2024 | 8 Rivers Capital, LLC 10% Stockholder Filer has designee on Issuer board | 1,260,420 1.68% of outstanding | $11M | Nov 19, 2024 | $18M |
Transactions
The newest 50 of 160 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Apr 13, 2026 | Ned Leland Shuman Chief Financial Officer | AGrant or award Restricted Stock Units | +529,801 | $0.00 | $0 | 529,801 | 5 d ago |
| Sep 8, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -100,000 | $1.94 | $194k | 900,000 | 33 d ago |
| Sep 8, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -100,000 | $1.94 | $194k | 900,000 | 33 d ago |
| Sep 9, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -150,000 | $1.84 | $276k | 750,000 | 33 d ago |
| Sep 9, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -150,000 | $1.84 | $276k | 750,000 | 33 d ago |
| May 12, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -400,000 | $2.44 | $976k | 3,000,000 | May 14, 2026 |
| May 13, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -35,000 | $2.43 | $85k | 2,965,000 | May 14, 2026 |
| Mar 6, 2026 | 8 Rivers Capital, LLC owner | CConversion Class A Common Stockindirect: By: NPEH, LLC | +3,000,000 | - | - | 3,400,000 | Mar 10, 2026 |
| Mar 6, 2026 | Npeh, LLC owner | CConversion Class A Common Stock | +3,000,000 | - | - | 3,400,000 | Mar 10, 2026 |
| Mar 6, 2026 | Npeh, LLC owner | JOther Class B Common Stock | -3,000,000 | - | - | 17,729,880 | Mar 10, 2026 |
| Mar 6, 2026 | 8 Rivers Capital, LLC owner | JOther Class B Common Stockindirect: By: NPEH, LLC | -3,000,000 | - | - | 17,729,880 | Mar 10, 2026 |
| Mar 3, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -100,000 | $2.04 | $204k | 400,000 | Mar 5, 2026 |
| Mar 3, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -100,000 | $2.04 | $204k | 400,000 | Mar 5, 2026 |
| Feb 26, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -1,881 | $2.00 | $3,762 | 584,602 | Mar 2, 2026 |
| Feb 26, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -1,881 | $2.00 | $3,762 | 584,602 | Mar 2, 2026 |
| Feb 27, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -4,744 | $2.00 | $9,489 | 579,858 | Mar 2, 2026 |
| Feb 27, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -4,744 | $2.00 | $9,489 | 579,858 | Mar 2, 2026 |
| Mar 2, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -79,858 | $2.05 | $164k | 500,000 | Mar 2, 2026 |
| Mar 2, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -79,858 | $2.05 | $164k | 500,000 | Mar 2, 2026 |
| Feb 19, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -125,000 | $2.14 | $268k | 650,000 | Feb 23, 2026 |
| Feb 19, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -125,000 | $2.14 | $268k | 650,000 | Feb 23, 2026 |
| Feb 20, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -63,517 | $2.03 | $129k | 586,483 | Feb 23, 2026 |
| Feb 20, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -63,517 | $2.03 | $129k | 586,483 | Feb 23, 2026 |
| Feb 13, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -100,000 | $2.14 | $214k | 850,000 | Feb 18, 2026 |
| Feb 13, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -100,000 | $2.14 | $214k | 850,000 | Feb 18, 2026 |
| Feb 18, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -75,000 | $2.07 | $155k | 775,000 | Feb 18, 2026 |
| Feb 18, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -75,000 | $2.07 | $155k | 775,000 | Feb 18, 2026 |
| Feb 10, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -40,000 | $2.08 | $83k | 1,160,000 | Feb 12, 2026 |
| Feb 10, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -40,000 | $2.08 | $83k | 1,160,000 | Feb 12, 2026 |
| Feb 11, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -60,000 | $2.02 | $121k | 1,100,000 | Feb 12, 2026 |
| Feb 11, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -60,000 | $2.02 | $121k | 1,100,000 | Feb 12, 2026 |
| Feb 12, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -150,000 | $2.03 | $305k | 950,000 | Feb 12, 2026 |
| Feb 12, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -150,000 | $2.03 | $305k | 950,000 | Feb 12, 2026 |
| Jan 29, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -54,780 | $2.35 | $129k | 1,200,000 | Feb 2, 2026 |
| Jan 29, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -54,780 | $2.35 | $129k | 1,200,000 | Feb 2, 2026 |
| Jan 26, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -130,000 | $2.35 | $306k | 1,420,000 | Jan 28, 2026 |
| Jan 26, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -130,000 | $2.35 | $306k | 1,420,000 | Jan 28, 2026 |
| Jan 27, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -100,000 | $2.38 | $238k | 1,320,000 | Jan 28, 2026 |
| Jan 27, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -100,000 | $2.38 | $238k | 1,320,000 | Jan 28, 2026 |
| Jan 28, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -65,220 | $2.38 | $155k | 1,254,780 | Jan 28, 2026 |
| Jan 28, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -65,220 | $2.38 | $155k | 1,254,780 | Jan 28, 2026 |
| Jan 14, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -135,000 | $2.74 | $370k | 1,915,000 | Jan 16, 2026 |
| Jan 14, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -135,000 | $2.74 | $370k | 1,915,000 | Jan 16, 2026 |
| Jan 15, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -135,000 | $2.57 | $347k | 1,780,000 | Jan 16, 2026 |
| Jan 15, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -135,000 | $2.57 | $347k | 1,780,000 | Jan 16, 2026 |
| Jan 16, 2026 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -230,000 | $2.63 | $605k | 1,550,000 | Jan 16, 2026 |
| Jan 16, 2026 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -230,000 | $2.63 | $605k | 1,550,000 | Jan 16, 2026 |
| Dec 24, 2025 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -170,000 | $2.21 | $376k | 2,050,000 | Dec 29, 2025 |
| Dec 24, 2025 | Npeh, LLC owner | SOpen-market sale Class A Common Stock | -170,000 | $2.21 | $376k | 2,050,000 | Dec 29, 2025 |
| Dec 19, 2025 | 8 Rivers Capital, LLC owner | SOpen-market sale Class A Common Stockindirect: By: NPEH, LLC | -100,000 | $2.34 | $234k | 2,450,000 | Dec 23, 2025 |
50 of 160 rows shown.
Insiders
Everyone who has filed a Form 4 here.
- 8 Rivers Capital, LLCowner
- Cynda Beauchampowner
- Npeh, LLCowner
- Akash S. PatelChief Financial Officer
- Kelly RosserChief Accounting Officer
- Sk Inc.owner
- Ned Leland ShumanChief Financial Officer
Questions about NPWR
Answered from the filings on this page, as of the latest one.
Are insiders buying NPWR?
As of Oct 8, 2026, SEC Form 4 filings show 0 open-market buys worth $0 by 0 insiders and 2 open-market sells worth $939k by 2 insiders at NET Power Inc. in the last 90 days, net -$939k. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade NPWR on the open market?
8 Rivers Capital, LLC (10% owner) sold $470k of NPWR on Sep 8, 2026 and filed the Form 4 on Sep 10, 2026. InsiderTell scored 47 (moderate), with 2 insiders on the same side within 14 days.
How many insiders file Form 4 at NET Power Inc.?
7 people have filed a Form 4 at NET Power Inc., among them 8 Rivers Capital, LLC (10% owner), Cynda Beauchamp (10% owner), Npeh, LLC (10% owner). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.