Arkolith/Insider Trading/NPWR

NPWR Insider Trading

Name: Arkolith
Brand: Arkolith

NET Power Inc. · full profile →Last filing May 13, 2026

Net Selling · 180d

Open-Market Buys (180d)

0 insiders

Open-Market Sells (180d)

$8.3M

3 insiders

Net Insider Flow

-$8.3M

open market, 180d

Reporting Insiders

36 P/S transactions

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Build on these Form 4 transactions

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Recent Form 4 Transactions

100 shown

Date	Insider	Role	Action	Shares	Price	Value
May 13, 2026	Npeh, LLC	10% Owner	Sell(S)	35K	$2.43	$85K
May 13, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	35K	$2.43	$85K
May 12, 2026	Npeh, LLC	10% Owner	Sell(S)	400K	$2.44	$976K
May 12, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	400K	$2.44	$976K
Mar 6, 2026	Npeh, LLC	10% Owner	Conversion(C)	3.0M	—	—
Mar 6, 2026	Npeh, LLC	10% Owner	Other(J)	3.0M	—	—
Mar 6, 2026	Npeh, LLC	10% Owner	Conversion(C)	3.0M	—	—
Mar 6, 2026	8 Rivers Capital, LLC	10% Owner	Conversion(C)	3.0M	—	—
Mar 6, 2026	8 Rivers Capital, LLC	10% Owner	Other(J)	3.0M	—	—
Mar 6, 2026	8 Rivers Capital, LLC	10% Owner	Conversion(C)	3.0M	—	—
Mar 3, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	100K	$2.04	$204K
Mar 3, 2026	Npeh, LLC	10% Owner	Sell(S)	100K	$2.04	$204K
Mar 2, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	80K	$2.05	$164K
Mar 2, 2026	Npeh, LLC	10% Owner	Sell(S)	80K	$2.05	$164K
Feb 27, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	5K	$2.00	$9K
Feb 27, 2026	Npeh, LLC	10% Owner	Sell(S)	5K	$2.00	$9K
Feb 26, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	2K	$2.00	$4K
Feb 26, 2026	Npeh, LLC	10% Owner	Sell(S)	2K	$2.00	$4K
Feb 20, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	64K	$2.03	$129K
Feb 20, 2026	Npeh, LLC	10% Owner	Sell(S)	64K	$2.03	$129K
Feb 19, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	125K	$2.14	$268K
Feb 19, 2026	Npeh, LLC	10% Owner	Sell(S)	125K	$2.14	$268K
Feb 18, 2026	Npeh, LLC	10% Owner	Sell(S)	75K	$2.07	$155K
Feb 18, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	75K	$2.07	$155K
Feb 13, 2026	Npeh, LLC	10% Owner	Sell(S)	100K	$2.14	$214K
Feb 13, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	100K	$2.14	$214K
Feb 12, 2026	Npeh, LLC	10% Owner	Sell(S)	150K	$2.03	$305K
Feb 12, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	150K	$2.03	$305K
Feb 11, 2026	Npeh, LLC	10% Owner	Sell(S)	60K	$2.02	$121K
Feb 11, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	60K	$2.02	$121K
Feb 10, 2026	Npeh, LLC	10% Owner	Sell(S)	40K	$2.08	$83K
Feb 10, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	40K	$2.08	$83K
Jan 29, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	55K	$2.35	$129K
Jan 29, 2026	Npeh, LLC	10% Owner	Sell(S)	55K	$2.35	$129K
Jan 28, 2026	Npeh, LLC	10% Owner	Sell(S)	65K	$2.38	$155K
Jan 28, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	65K	$2.38	$155K
Jan 27, 2026	Npeh, LLC	10% Owner	Sell(S)	100K	$2.38	$238K
Jan 27, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	100K	$2.38	$238K
Jan 26, 2026	Npeh, LLC	10% Owner	Sell(S)	130K	$2.35	$306K
Jan 26, 2026	Beauchamp Damian R.	10% Owner	Sell(S)	130K	$2.35	$306K
Jan 16, 2026	Npeh, LLC	10% Owner	Sell(S)	230K	$2.63	$605K
Jan 16, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	230K	$2.63	$605K
Jan 15, 2026	Npeh, LLC	10% Owner	Sell(S)	135K	$2.57	$347K
Jan 15, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	135K	$2.57	$347K
Jan 14, 2026	Npeh, LLC	10% Owner	Sell(S)	135K	$2.74	$370K
Jan 14, 2026	8 Rivers Capital, LLC	10% Owner	Sell(S)	135K	$2.74	$370K
Dec 24, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	170K	$2.21	$376K
Dec 24, 2025	Npeh, LLC	10% Owner	Sell(S)	170K	$2.21	$376K
Dec 23, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	130K	$2.17	$282K
Dec 23, 2025	Npeh, LLC	10% Owner	Sell(S)	130K	$2.17	$282K
Dec 22, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	100K	$2.26	$226K
Dec 22, 2025	Npeh, LLC	10% Owner	Sell(S)	100K	$2.26	$226K
Dec 19, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	100K	$2.34	$234K
Dec 19, 2025	Npeh, LLC	10% Owner	Sell(S)	100K	$2.34	$234K
Dec 9, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	40K	$2.82	$113K
Dec 9, 2025	Npeh, LLC	10% Owner	Sell(S)	40K	$2.82	$113K
Dec 8, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	140K	$2.81	$393K
Dec 8, 2025	Npeh, LLC	10% Owner	Sell(S)	140K	$2.81	$393K
Dec 5, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	105K	$2.91	$306K
Dec 5, 2025	Npeh, LLC	10% Owner	Sell(S)	105K	$2.91	$306K
Dec 4, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	65K	$2.94	$191K
Dec 4, 2025	Npeh, LLC	10% Owner	Sell(S)	65K	$2.94	$191K
Nov 28, 2025	Npeh, LLC	10% Owner	Sell(S)	200K	$2.94	$588K
Nov 28, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	200K	$2.94	$588K
Nov 21, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	17K	$2.50	$43K
Nov 21, 2025	Npeh, LLC	10% Owner	Sell(S)	17K	$2.50	$43K
Nov 20, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	133K	$2.60	$345K
Nov 20, 2025	Npeh, LLC	10% Owner	Sell(S)	133K	$2.60	$345K
Nov 19, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	250K	$2.57	$643K
Nov 19, 2025	Npeh, LLC	10% Owner	Sell(S)	250K	$2.57	$643K
Nov 17, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	339K	$2.81	$952K
Nov 17, 2025	Npeh, LLC	10% Owner	Sell(S)	339K	$2.81	$952K
Nov 3, 2025	Npeh, LLC	10% Owner	Other(J)	2.0M	—	—
Nov 3, 2025	Npeh, LLC	10% Owner	Conversion(C)	2.0M	—	—
Nov 3, 2025	Npeh, LLC	10% Owner	Sell(S)	8K	$4.00	$34K
Nov 3, 2025	Npeh, LLC	10% Owner	Conversion(C)	2.0M	—	—
Nov 3, 2025	8 Rivers Capital, LLC	10% Owner	Other(J)	2.0M	—	—
Nov 3, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	8K	$4.00	$34K
Nov 3, 2025	8 Rivers Capital, LLC	10% Owner	Conversion(C)	2.0M	—	—
Nov 3, 2025	8 Rivers Capital, LLC	10% Owner	Conversion(C)	2.0M	—	—
Nov 2, 2025	Beauchamp Cynda	10% Owner	Other(J)	22.7M	—	—
Nov 2, 2025	Beauchamp Cynda	10% Owner	Other(J)	1.8M	—	—
Nov 2, 2025	Beauchamp Cynda	10% Owner	Other(J)	22.7M	—	—
Oct 31, 2025	Beauchamp Cynda	10% Owner	Sell(S)	18K	$4.05	$73K
Oct 31, 2025	Npeh, LLC	10% Owner	Sell(S)	18K	$4.05	$73K
Oct 31, 2025	8 Rivers Capital, LLC	10% Owner	Sell(S)	18K	$4.05	$73K
Oct 30, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	108K	$4.04	$435K
Oct 30, 2025	Npeh, LLC	10% Owner	Sell(S)	108K	$4.04	$435K
Oct 29, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	787K	$4.12	$3.2M
Oct 29, 2025	Npeh, LLC	10% Owner	Sell(S)	787K	$4.12	$3.2M
Oct 28, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	8K	$3.77	$29K
Oct 28, 2025	Npeh, LLC	10% Owner	Sell(S)	8K	$3.77	$29K
Oct 27, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	200K	$3.77	$754K
Oct 27, 2025	Npeh, LLC	10% Owner	Sell(S)	200K	$3.77	$754K
Oct 24, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	33K	$3.70	$121K
Oct 24, 2025	Npeh, LLC	10% Owner	Sell(S)	33K	$3.70	$121K
Oct 23, 2025	Beauchamp Damian R.	10% Owner	Sell(S)	284K	$3.69	$1.0M
Oct 23, 2025	Npeh, LLC	10% Owner	Sell(S)	284K	$3.69	$1.0M
Oct 22, 2025	Npeh, LLC	10% Owner	Sell(S)	89K	$3.31	$295K
Oct 22, 2025	Beauchamp Cynda	10% Owner	Sell(S)	89K	$3.31	$295K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).