8 Rivers Capital, LLC → NET Power Inc. NPWR-WT

Stake: 21.01% Shares: 21,984,660 CUSIP: 64107A105 Class: Class A Common Stock, par value $0.0001

Item 4 — Purpose of Transaction

The information contained in Item 4 of Schedule 13D is hereby amended and supplemented by adding the following information: Between December 19, 2025, and January 28, 2026, NPEH sold 1,295,220 shares of Class A Common Stock held by it.

Cross-References

Insider Activity (last 365d)

4 transactions

4 buys · 0 sales · 0 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

3 filings by this filer

2 other filings in the data moat

Short Interest

—

Not in latest FINRA snapshot

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

2 holders · $30.77M

Greenlight CapitalPoint72 Asset Mgmt

Post-Filing Returns · since 2026-01-26 on NPWR-WT

+1 day

0.0%

+5 days

0.0%

+30 days

0.0%

+60 days

0.0%

+90 days

0.0%

+180 days

-30.7%

Anchor price 0.22 on closest trading day on/after 2026-01-26. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-06-03	Veltmann Alejandra	director	Award	71,770	—	—
2026-06-03	PETERSON CAROL R.	director	Award	71,770	—	—
2026-06-03	Kelliher Joseph T	director	Award	71,770	—	—
2026-06-03	Alexander Ralph	director	Award	71,770	—	—

Other 13D/G Filings on NET Power Inc.

Filed	Form	Filer	Stake	Shares
2026-08-17	SCHEDULE 13D/A	8 Rivers Capital, LLC	17.86%	18,972,780	view →
2026-05-14	SCHEDULE 13D/A	8 Rivers Capital, LLC	—	20,694,880	view →

Other Filings by 8 Rivers Capital, LLC

Filed	Form	Issuer	Stake	Shares
2026-08-17	SCHEDULE 13D/A	NET Power Inc.	17.86%	18,972,780	view →
2026-05-14	SCHEDULE 13D/A	NET Power Inc. NPWR-WT	—	20,694,880	view →

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