Institutional Ownership
Net Power Inc
CUSIP 64107A105COM CL ANPWRQ1 2026
13D / 13G Filings
18
Schedule 13D/13G on record
Beneficial Filers
8
Distinct reporting persons
Largest Stake
72.9%
Max % of class reported
Institutional Holders
109
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
18 filings · latest Jan 28, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 28, 2026 | 8 Rivers Capital, LLC | 13D/A | 21.0% | — | SEC |
| 2 | Dec 9, 2025 | 8 Rivers Capital, LLC | 13D/A | 22.3% | — | SEC |
| 3 | Nov 4, 2025 | 8 Rivers Capital, LLC | 13D/A | 23.5% | — | SEC |
| 4 | Oct 29, 2025 | 8 Rivers Capital, LLC | 13D/A | 23.6% | — | SEC |
| 5 | Aug 1, 2025 | 8 Rivers Capital, LLC | 13D/A | 25.6% | — | SEC |
| 6 | Jul 17, 2025 | 8 Rivers Capital, LLC | 13D/A | 25.6% | — | SEC |
| 7 | Nov 26, 2024 | 8 Rivers Capital, LLC | 13D/A | 25.9% | 26.73M | SEC |
| 8 | Oct 21, 2024 | 8 Rivers Capital, LLC | 13D/A | 27.1% | 27.99M | SEC |
| 9 | Sep 23, 2024 | 8 Rivers Capital, LLC | 13D/A | 28.2% | 29.11M | SEC |
| 10 | May 28, 2024 | 8 Rivers Capital, LLC | 13D/A | 29.9% | 30.51M | SEC |
8 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Net Power Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Share Andrew L. | 9.77M | $15.24M |
| 2 | Hite Hedge Asset Management LLC | 2.76M | $4.31M |
| 3 | Blackrock, Inc. | 2.14M | $3.34M |
| 4 | Peak6 LLC | 1.99M | $3.10M |
| 5 | Adage Capital Partners Gp, L.L.C. | 1.54M | $2.40M |
| 6 | Sourcerock Group LLC | 1.50M | $2.35M |
| 7 | Two Sigma Investments, LP | 1.08M | $1.69M |
| 8 | Geode Capital Management, LLC | 860.4K | $1.34M |
| 9 | Argentarii, LLC | 748.6K | $1.17M |
| 10 | Nuveen, LLC | 713.8K | $1.11M |