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Disclosery

NPWR NET POWER INC

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COMMON STOCK (common), issuer CIK 1845437

117 managers (121 13F filers) reported a position in NPWR shares at 2026-06-30, 38,416,587 shares in all. 20 filers opened a position and 10 filers sold out during the quarter.

Managers
117
13F filers
121
New
20
Added
48
Reduced
30
Sold out
10
Shares held by filers
38,416,587

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Share Andrew L.9,767,500$16.3M8.43%013F-HRTimeline
HITE Hedge Asset Management LLC2,852,670$4.76M0.26%+89,24613F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…2,840,000$4.74M0.01%+1,300,00013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding2,421,596$4.04M+251,907Timeline
BlackRock, Inc.in group BlackRock, Inc.2,416,294$4.04M<0.01%+273,37813F-HRTimelineGroup
PEAK6 LLCin group PEAK6 LLC1,985,754$3.32M0.08%-2,46113F-HRTimelineGroup
Defiance ETFs, LLC1,555,837$2.6M0.04%+1,022,58413F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC1,546,562$2.58M0.01%+1,013,30913F-HRTimelineGroup
Sourcerock Group LLC1,400,110$2.34M0.12%-104,01613F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,006,014$1.68M<0.01%+145,62813F-HRTimelineGroup
COHEN & STEERS, INC.in group COHEN & STEERS, INC.888,954$1.49M<0.01%-3,18613F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP851,296$1.42M0.09%+665,05613F-HRTimeline
Argentarii, LLC746,799$1.21M0.36%-1,85013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP660,570$1.1M<0.01%-419,71113F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP624,238$1.04M<0.01%+10,70413F-HRTimelineGroup
UBS Group AGin group UBS Group AG610,961$1.02M<0.01%+241,08813F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.412,502$689K<0.01%+177,10513F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding402,909$673K+47,402Timeline
TUDOR INVESTMENT CORP ET AL397,515$664K<0.01%-33,63813F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC385,283$643K<0.01%+231,79013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC354,206$592K<0.01%-349,59413F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP334,814$559K<0.01%+42,79013F-HRTimelineGroup
Nuveen, LLCin group TIAA288,876$482K<0.01%-424,88413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co288,276$481K<0.01%+18,75813F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY270,736$452K<0.01%+86,94113F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC263,298$440K0.01%-32,65313F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.248,208$415K<0.01%+6,61613F-HRTimelineGroup
SHELTON CAPITAL MANAGEMENT200,300$335K0.01%013F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP163,443$273K<0.01%+60,32213F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC151,365$253K<0.01%-109,20013F-HRTimelineGroup
Janney Montgomery Scott LLC133,000$222K<0.01%013F-HRTimeline
Caption Management, LLC122,452$204K0.01%+102,57413F-HRTimeline
ALLIANCEBERNSTEIN L.P.117,680$184K<0.01%+16,00013F-HRTimeline
SIR Capital Management, L.P.109,651$183K0.02%+6,47313F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC96,430$161K<0.01%new13F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP85,000$142K<0.01%013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp83,821$140K<0.01%-22513F-HRTimelineGroup
SIMPLEX TRADING, LLC77,604$130K<0.01%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd73,944$123K<0.01%+61,85413F-HRTimelineGroup
HRT FINANCIAL LP60,620$101K<0.01%new13F-HRTimeline
LPL Financial LLC57,074$95.3K<0.01%+4,04913F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\56,064$93.6K<0.01%+1,88713F-HRTimelineGroup
Qube Research & Technologies Ltd55,825$93.2K<0.01%+19,24813F-HRTimeline
RHUMBLINE ADVISERS53,919$90K<0.01%+4,80513F-HRTimeline
IMC-Chicago, LLC41,449$69.2K<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.40,785$68.1K<0.01%-20013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC37,844$63.2K<0.01%-644,86113F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN35,383$59.1K<0.01%+6,56813F-HRTimelineGroup
Jain Global LLC34,819$58.1K<0.01%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…33,503$55.9K<0.01%+30,69113F-HRTimelineGroup
SIG BROKERAGE, LP31,942$53.3K0.01%013F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD29,700$49.6K<0.01%new13F-HRTimeline
LMR Partners LLPin group LMR Partners LLP28,794$48.1K<0.01%-7,07813F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd26,934$45K<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/26,930$45K<0.01%-8,15313F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC26,027$43K<0.01%new13F-HRTimelineGroup
TWO SIGMA SECURITIES, LLC22,060$36.8K<0.01%new13F-HRTimeline
Invesco Ltd.in group Invesco Ltd.22,043$36.8K<0.01%+10,75913F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS19,846$33.1K<0.01%+5,42813F-HRTimeline
CITIGROUP INCin group CITIGROUP INC19,652$32.8K<0.01%+18,06613F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…19,454$32.5K<0.01%+4,33513F-HRTimelineGroup
Polymer Capital Management (US) LLC18,731$31.3K<0.01%-32,19513F-HRTimeline
GROUP ONE TRADING LLC18,672$31.2K<0.01%+3,90513F-HRTimeline
Mariner, LLCin group Mariner, LLC18,552$31K<0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO18,211$30.4K<0.01%+1,30913F-HRTimelineGroup
INTEGRITY ALLIANCE, LLC.17,400$29.1K<0.01%013F-HRTimeline
Kapstone Financial Advisors LLC17,395$29.1K0.01%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/17,028$29K<0.01%013F-HRTimeline
Legacy Advisors, LLC16,413$27.4K<0.01%+2013F-HRTimeline
Engineers Gate Manager LP16,261$27.2K<0.01%-14,68913F-HRTimeline
IEQ CAPITAL, LLC16,207$27.1K<0.01%new13F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV16,047$26.8K<0.01%new13F-HR/ATimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.15,340$25.6K<0.01%-18,75113F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO12,854$21.5K<0.01%013F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…13,528$21.1K<0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA12,831$21K<0.01%+8,36313F-HRTimelineGroup
Creative Planningin group Creative Planning12,217$20.4K<0.01%new13F-HRTimelineGroup
Private Advisor Group, LLC12,200$20.4K<0.01%013F-HRTimeline
Aigen Investment Management, LP11,812$19.7K0.01%new13F-HRTimeline
Cambridge Investment Research Advisors,…11,339$19K<0.01%new13F-HR/ATimeline
Focus Partners Wealthin group Focus Partners Wealth10,863$18.1K<0.01%new13F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC10,786$18K<0.01%013F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP10,000$16.7K<0.01%013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC8,948$14.9K<0.01%+10913F-HRTimelineGroup
Arax Advisory Partners8,943$14.9K<0.01%+8,82213F-HRTimeline
Integrated Wealth Concepts LLC7,372$12.3K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…7,332$12.2K<0.01%-3,30113F-HRTimelineGroup
LANARK FINANCIAL, INC.6,340$10.6K<0.01%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND5,100$8.52K<0.01%013F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…5,000$8.35K<0.01%013F-HRTimelineGroup
Police & Firemen's Retirement System of…4,252$7.1K<0.01%013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc3,095$5.17K<0.01%013F-HRTimelineGroup
Quarry LP2,257$3.77K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,072$3.46K<0.01%013F-HRTimelineGroup
FMR LLCin group FMR LLC1,951$3.26K<0.01%-9113F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP1,800$2.95K<0.01%-1,27713F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,692$2.83K<0.01%+76413F-HRTimelineGroup
Allworth Financial LP1,545$2.58K<0.01%+1,22013F-HRTimeline
Blue Trust, Inc.1,390$2.32K<0.01%013F-HRTimeline
McMillan Office, Inc.1,000$1.67K<0.01%013F-HRTimeline
Sterling Capital Management LLC733$1.22K<0.01%-56613F-HRTimeline
Essential Partners LLC711$1.19K<0.01%-2,04713F-HRTimeline
Capital Analysts, LLCin group Capital Analysts, LLC522$1K<0.01%013F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC550$919<0.01%+40413F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…549$917<0.01%-1,74913F-HR/ATimeline
Fortitude Family Office, LLC545$910<0.01%+24713F-HRTimeline
Rialto Wealth Management, LLC299$500<0.01%+6213F-HRTimeline
Farther Finance Advisors, LLC275$459<0.01%+9913F-HRTimeline
NISA INVESTMENT ADVISORS, LLC229$382<0.01%-20213F-HRTimeline
IFP Advisors, Inc106$177<0.01%-913F-HRTimeline
SJS Investment Consulting Inc.57$96<0.01%+4613F-HRTimeline
True Wealth Design, LLC50$84<0.01%+3813F-HRTimeline
Clearstead Advisors, LLC26$44<0.01%-16313F-HRTimeline
Caitong International Asset Management …10$17<0.01%-71013F-HRTimeline
JPL Wealth Management, LLC5$9<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.5$8<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.4$7<0.01%-29613F-HRTimelineGroup