Security Snapshot

Net Power Inc. - Class A Common Stock, par value $0.0001 (NPWR) Institutional Ownership

CUSIP: 64107A105

13F Institutional Holders and Ownership History from Q2 2023 to Q2 2026

Latest Period

Q2 2026

Institutions Reporting

120

Shares (Excl. Options)

38,416,038

Price

$1.67

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Security type / class
Equity / Class A Common Stock, par value $0.0001
Symbol
NPWR on NYSE
All holders as of 30 Jun 2026
Q2 2026
Total 13F shares
38,416,038
Latest holder snapshot 5 signals
Total 13F value
$64,103,665
Portfolio coverage rank
0%
Share change
+3,214,532
Value change
+$5,486,409
Number of holders
120
Security identity Names, identifiers, and filing context for this profile. 1 source field
Underlying class
Class A Common Stock
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
106,230,571
SEC-reported price per share
$1.67
Insider filing price
$1.67
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors

Key facts

  • NPWR - Net Power Inc. - Class A Common Stock, par value $0.0001 is tracked under CUSIP 64107A105.
  • 120 institutions reported positions in Q2 2026.
  • 2 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 113 to 120 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from $55,005,370 to $64,103,665.

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 120 institutions filings for Q2 2026.

Open SEC evidence

Security key

64107A105

Latest holder period

Q2 2026

13F holders

120

13D/G owners

2

CIK / CUSIP context first

Open Q2 2026 holders NPWR full holder history NET Power Inc. SEC filings NET Power Inc. company facts NET Power Inc. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
2
Security
NPWR
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
SK INC. 26% 0% $88,475,903 26,729,880 0% 8 RIVERS CAPITAL, LLC 30 Jul 2025
8 Rivers Capital, LLC 18% -8.6% $31,684,543 -$2,875,907 18,972,780 -8.3% 8 RIVERS CAPITAL, LLC 13 Aug 2026

As of 30 Jun 2026, 120 institutional investors reported holding 38,416,038 shares of Net Power Inc. - Class A Common Stock, par value $0.0001 (NPWR). This represents 36% of the company’s total 106,230,571 outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
33%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Share Andrew L. 9.2% 9,767,500 0% 8.4% $16,311,725
HITE Hedge Asset Management LLC 2.7% 2,852,670 +3.2% 0.26% $4,763,959
ADAGE CAPITAL PARTNERS GP, L.L.C. 2.7% 2,840,000 +84% 0.01% $4,742,800
BlackRock, Inc. 2.3% 2,416,294 +13% 0% $4,035,211
PEAK6 LLC 1.9% 1,985,754 -0.12% 0.08% $3,316,209
VANGUARD CAPITAL MANAGEMENT LLC 1.7% 1,802,372 +9.6% 0% $3,009,961
Defiance ETFs, LLC 1.5% 1,555,837 +192% 0.04% $2,598,248
Tidal Investments LLC 1.5% 1,546,562 +190% 0.01% $2,582,759
Sourcerock Group LLC 1.3% 1,400,110 -6.9% 0.12% $2,338,184
GEODE CAPITAL MANAGEMENT, LLC 0.95% 1,006,014 +17% 0% $1,680,463
COHEN & STEERS, INC. 0.84% 888,954 -0.36% 0% $1,485,000
GSA CAPITAL PARTNERS LLP 0.8% 851,296 +357% 0.09% $1,422,000
Argentarii, LLC 0.7% 746,799 -0.25% 0.37% $1,209,814
TWO SIGMA INVESTMENTS, LP 0.62% 660,570 -39% 0% $1,103,152
STATE STREET CORP 0.59% 624,238 +1.7% 0% $1,042,477
UBS Group AG 0.58% 610,961 +65% 0% $1,020,305
D. E. Shaw & Co., Inc. 0.39% 412,502 +75% 0% $688,878
TUDOR INVESTMENT CORP ET AL 0.37% 397,515 -7.8% 0% $663,850
AQR CAPITAL MANAGEMENT LLC 0.36% 385,283 +151% 0% $643,422
RENAISSANCE TECHNOLOGIES LLC 0.33% 354,206 -50% 0% $591,524
NORTHERN TRUST CORP 0.32% 334,814 +15% 0% $559,139
VANGUARD PORTFOLIO MANAGEMENT LLC 0.31% 324,611 +23% 0% $542,100
Nuveen, LLC 0.27% 288,876 -60% 0% $482,423
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.27% 288,276 +7% 0% $481,421
VANGUARD FIDUCIARY TRUST CO 0.27% 282,441 +13% 0% $471,676

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
13
Latest
Q2 2026
Rows shown
1-13 of 13
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q2 38,416,038 $64,103,665 +$5,486,409 $1.67 120
2026 Q1 35,213,040 $55,005,370 +$2,088,910 $1.56 113
2025 Q4 33,366,053 $76,075,977 +$1,810,054 $2.28 115
2025 Q3 32,472,478 $97,731,144 +$7,235,549 $3.01 100
2025 Q2 30,187,661 $74,563,817 -$2,557,401 $2.47 94
2025 Q1 30,912,137 $81,298,302 -$45,619,453 $2.63 105
2024 Q4 31,700,909 $335,682,088 +$23,253,219 $10.59 110
2024 Q3 30,684,984 $215,102,989 +$2,065,397 $7.01 88
2024 Q2 29,745,406 $292,378,736 +$23,316,521 $9.83 92
2024 Q1 27,000,033 $307,528,361 -$60,844,752 $11.39 75
2023 Q4 33,427,800 $337,621,017 +$7,264,962 $10.10 69
2023 Q3 32,213,098 $486,417,736 +$210,002,806 $15.10 57
2023 Q2 18,323,204 $238,202,002 +$237,758,780 $13.00 41
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