SEC Form 4 reporting owner

Npeh, LLC

Npeh, LLC has filed 44 Form 4 transactions reported between December 19, 2025 and September 9, 2026, as 10% owner of Net Power Inc..

Name as filed: NPEH, LLC

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$9.8M

43 lines

Companies

with Form 4 filings

Latest transaction

Sep 9, 2026

transaction date

Roles and reported holdings

NPWRNet Power Inc.
Dec 19, 2025 – Sep 9, 2026
10% owner
Held directly750,000 sh as of Sep 9, 2026 · Form 4
24 months: $9.8M sold

Transaction history

All 44 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 9, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	150,000	$1.84	$276K@ $1.84	750,000	Form 4
Sep 8, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	100,000	$1.94	$194K@ $1.94	900,000	Form 4
Aug 26, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	41,350	$1.91	$79K@ $1.91	1,000,000	Form 4
Aug 25, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	201,550	$1.91	$384K@ $1.91	1,041,350	Form 4
Aug 14, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	507,100	$1.95	$991K@ $1.95	1,242,900	Form 4
Aug 13, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	200,000	$1.62	$324K@ $1.62	1,750,000	Form 4
Aug 12, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	50,000	$1.63	$82K@ $1.63	1,950,000	Form 4
Aug 11, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	35,000	$1.60	$56K@ $1.60	2,000,000	Form 4
Aug 10, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	55,400	$1.55	$86K@ $1.55	2,035,000	Form 4
Aug 7, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	60,345	$1.53	$92K@ $1.53	2,090,400	Form 4
Aug 6, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	89,255	$1.51	$134K@ $1.51	2,150,745	Form 4
Aug 5, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	140,000	$1.51	$211K@ $1.51	2,240,000	Form 4
Aug 4, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	120,000	$1.54	$185K@ $1.54	2,380,000	Form 4
Jul 30, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	155,000	$1.43	$221K@ $1.43	2,500,000	Form 4
Jul 29, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	45,000	$1.41	$63K@ $1.41	2,655,000	Form 4
Jul 28, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	55,858	$1.47	$82K@ $1.47	2,700,000	Form 4
Jul 23, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	39,142	$1.51	$59K@ $1.51	2,755,858	Form 4
Jul 22, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	90,000	$1.53	$137K@ $1.53	2,795,000	Form 4
Jul 21, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	80,000	$1.53	$122K@ $1.53	2,885,000	Form 4
May 13, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	35,000	$2.43	$85K@ $2.43	2,965,000	Form 4
May 12, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	400,000	$2.44	$976K@ $2.44	3,000,000	Form 4
Mar 6, 2026	NPWR10% owner	Conversion of derivativeCode C · direct	3,000,000	—	—	3,400,000	Form 4
Mar 3, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	100,000	$2.04	$204K@ $2.04	400,000	Form 4
Mar 2, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	79,858	$2.05	$164K@ $2.05	500,000	Form 4
Feb 27, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	4,744	$2.00	$9K@ $2.00	579,858	Form 4
Feb 26, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	1,881	$2.00	$4K@ $2.00	584,602	Form 4
Feb 20, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	63,517	$2.03	$129K@ $2.03	586,483	Form 4
Feb 19, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	125,000	$2.14	$268K@ $2.14	650,000	Form 4
Feb 18, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	75,000	$2.07	$155K@ $2.07	775,000	Form 4
Feb 13, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	100,000	$2.14	$214K@ $2.14	850,000	Form 4
Feb 12, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	150,000	$2.03	$305K@ $2.03	950,000	Form 4
Feb 11, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	60,000	$2.02	$121K@ $2.02	1,100,000	Form 4
Feb 10, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	40,000	$2.08	$83K@ $2.08	1,160,000	Form 4
Jan 29, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	54,780	$2.35	$129K@ $2.35	1,200,000	Form 4
Jan 28, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	65,220	$2.38	$155K@ $2.38	1,254,780	Form 4
Jan 27, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	100,000	$2.38	$238K@ $2.38	1,320,000	Form 4
Jan 26, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	130,000	$2.35	$306K@ $2.35	1,420,000	Form 4
Jan 16, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	230,000	$2.63	$605K@ $2.63	1,550,000	Form 4
Jan 15, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	135,000	$2.57	$347K@ $2.57	1,780,000	Form 4
Jan 14, 2026	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	135,000	$2.74	$370K@ $2.74	1,915,000	Form 4
Dec 24, 2025	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	170,000	$2.21	$376K@ $2.21	2,050,000	Form 4
Dec 23, 2025	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	130,000	$2.17	$282K@ $2.17	2,220,000	Form 4
Dec 22, 2025	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	100,000	$2.26	$226K@ $2.26	2,350,000	Form 4
Dec 19, 2025	NPWR10% owner	Open-market saleCode S · directAlso reported by 8 Rivers Capital, LLC	100,000	$2.34	$234K@ $2.34	2,450,000	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.