NET Power Inc. Class A (NPWR)
NPWR moved a median of -0.30% 30 minutes after news, and 0.00% by the close. How NPWR actually reacts to news — the realized, point-in-time move the market made, measured across 738 labeled events over the last three years with zero look-ahead.
NPWR’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 42% | 737 |
| 30-min | -0.30% | 43% | 738 |
| 60-min | -0.26% | 46% | 738 |
| to close | 0.00% | 48% | 737 |
| Middle 50% of NPWR reactions | -2.10% to +1.05% |
|---|---|
| Median reaction (30-min) | -0.30% |
| Measured reactions | 738 |
Half of all NET Power Inc. Class A news events land between -2.10% and +1.05% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when NPWR moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to NPWR's baseline. Nothing else.
Recent NPWR events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Net Power Closes Acquisition of EMPower’s Position Under EPC Agreement for 123 MW of Power Generation | Press release | Business Wire | +4.17% | +7.22% | |
| Net Power Signs Agreements for Additional Power Generation to Advance its Power-First Strategy | Press release | Business Wire | +1.61% | +6.99% | |
| Net Power Reports Second Quarter 2026 Results and Provides Business Update | Press release | Business Wire | +8.01% | +25.00% | |
| Net Power Schedules Second Quarter 2026 Earnings Release and Conference Call | Press release | Business Wire | +0.00% | -1.38% | |
| Net Power Reports First Quarter 2026 Results and Provides Business Update | Press release | Business Wire | -4.05% | +18.09% | |
| Net Power Schedules First Quarter 2026 Earnings Release and Conference Call | Press release | Business Wire | -0.30% | -3.57% | |
| Net Power Names Lee Shuman as New Chief Financial Officer | Press release | Business Wire | +1.63% | +1.96% | |
| Net Power Reports Fourth Quarter and Year End 2025 Results and Provides Business Update | Press release | Business Wire | +3.67% | +2.69% | |
| Net Power Schedules Fourth Quarter and Year End 2025 Earnings Release and Conference Call | Press release | Business Wire | +0.00% | -2.34% | |
| Net Power Schedules Third Quarter 2025 Earnings Release and Conference Call | Press release | Business Wire | +0.85% | +3.39% | |
| Form EFFECT Rice Acquisition Corp 3 | SEC filing · Form EFFECT | SEC EDGAR | +2.35% | +3.74% | |
| Form 8-A12B Rice Acquisition Corp 3 | SEC filing · Form 8-A12B | SEC EDGAR | +0.99% | -0.82% | |
| Form CERT Rice Acquisition Corp 3 | SEC filing · Form CERT | SEC EDGAR | +0.00% | -1.31% | |
| Form S-1/A Rice Acquisition Corp 3 | SEC filing · Form S-1 | SEC EDGAR | -0.35% | +2.10% | |
| Form S-1/A Rice Acquisition Corp 3 | SEC filing · Form S-1 | SEC EDGAR | -1.50% | -8.27% | |
| Form S-1 Rice Acquisition Corp 3 | SEC filing · Form S-1 | SEC EDGAR | -0.19% | -1.16% | |
| Net Power Reports Second Quarter 2025 Results and Provides Business Update | Press release | Business Wire | -11.33% | — | |
| Net Power Schedules Second Quarter 2025 Earnings Release and Conference Call | Press release | Business Wire | +0.00% | +4.71% | |
| Lifshitz Law PLLC Announces Investigations of NET Power Inc. (NYSE: NPWR), Napco Security Technologies, Inc. (NASDAQ: NSSC), Avis Budget Group, Inc. (NYSE: CAR), and Open Lending Corporation (NASDAQ: LPRO) | Press release | ACCESS Newswire | +1.21% | +0.40% | |
| Lifshitz Law PLLC Announces Investigations of NET Power Inc. (NYSE: NPWR), Napco Security Technologies, Inc. (NASDAQ: NSSC), Avis Budget Group, Inc. (NYSE: CAR), and Open Lending Corporation (NASDAQ: LPRO) | Press release | ACCESS Newswire | -2.08% | +0.19% | |
| Net Power Reports First Quarter 2025 Results and Provides Business Update | Press release | Business Wire | +0.49% | -5.85% | |
| Net Power Schedules First Quarter 2025 Earnings Release and Conference Call | Press release | Business Wire | +0.74% | -12.87% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating NET Power Inc. (NPWR) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | +0.54% | +3.48% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against NET Power Inc. (NPWR) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | -3.54% | -2.52% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against NET Power Inc. (NPWR) and Encourages Shareholders to Learn More About the Investigation | Press release | ACCESS Newswire | -3.54% | -2.52% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages NET Power Inc. (NPWR) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.69% | -8.76% | |
| Net Power Announces Leadership Changes | Press release | Business Wire | +2.42% | +2.90% | |
| NET Power Inc. (NPWR) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +1.07% | -3.63% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages NET Power Inc. (NPWR) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -1.21% | -5.24% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against NET Power Inc. (NPWR) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | +1.53% | +4.83% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating NET Power Inc. (NPWR) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | +0.68% | +5.67% | |
| NET Power Inc. (NPWR) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Stockholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | -0.98% | +20.59% | |
| Bronstein, Gewirtz & Grossman, LLC Announces an Investigation Against NET Power Inc. (NPWR) and Encourages Stockholders to Learn More About the Investigation | Press release | ACCESS Newswire | -2.07% | -6.45% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages NET Power Inc. (NPWR) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -1.12% | -1.57% | |
| Net Power Reports Fourth Quarter 2024 Results and Provides Business Update | Press release | Business Wire | -14.47% | +1.06% | |
| Net Power Schedules Fourth Quarter and Year End 2024 Earnings Release and Conference Call | Press release | Business Wire | -0.84% | +4.30% | |
| Carbon TerraVault and Net Power Sign MOU to Develop Low Carbon, Reliable Power Solutions in California | Press release | GlobeNewswire | -1.48% | -1.29% | |
| Net Power Reports Third Quarter 2024 Results and Provides Business Update | Press release | Business Wire | +2.94% | +28.31% | |
| Net Power Schedules Third Quarter 2024 Earnings Release and Conference Call | Press release | Business Wire | +3.78% | +2.18% | |
| NET Power Reports Second Quarter 2024 Results and Provides Business Update | Press release | Business Wire | +0.67% | -1.56% | |
| NET Power Schedules Second Quarter 2024 Earnings Release and Conference Call | Press release | Business Wire | -0.94% | -0.63% | |
| Infinitum Secures $35 Million Series E Extension Amid Rapid Growth | Press release | Business Wire | -0.80% | -0.60% | |
| NET Power Reports First Quarter 2024 Results and Provides Business Update | Press release | Business Wire | -1.57% | -2.22% | |
| NET Power Schedules First Quarter 2024 Earnings Release and Conference Call | Press release | Business Wire | +0.00% | +2.32% | |
| NET Power Reports Fourth Quarter and Year End 2023 Results and Provides Business Update | Press release | Business Wire | +0.94% | -0.66% | |
| NET Power Schedules Fourth Quarter and Year End 2023 Earnings Release and Conference Call | Press release | Business Wire | -0.12% | +0.84% | |
| Lummus and NET Power Sign Strategic Supplier Agreement for Heat Transfer Equipment | Press release | PR Newswire | -0.33% | +5.02% | |
| NET Power and Lummus Sign Strategic Supplier Agreement for Heat Transfer Equipment | Press release | Business Wire | -0.33% | +5.02% | |
| NET Power Reports Third Quarter 2023 Results and Provides Business Update | Press release | Business Wire | +1.15% | -16.86% | |
| NET Power Schedules Third Quarter 2023 Earnings Release and Conference Call | Press release | Business Wire | +0.36% | -0.58% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the NPWR section they belong to.
Where else NPWR is measured.
NPWR earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is NET Power Inc. Class A's median reaction calculated?
Every labeled NPWR news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 738 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 43% of NPWR's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does NPWR's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.