NPWR insider transaction filings
Net Power Inc. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-10. Screen NPWR transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 18 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 38 legs across 14 filings by 3 insiders — 4,430,000 shares, $7,558,557 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 4.
- Largest priced transaction: sale of 507,100 shares @ $1.95 ($990,518) by 8 Rivers Capital, LLC, filed 2026-08-14.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| 8 Rivers Capital, LLC — 10% owner & BEAUCHAMP DAMIAN R. — 10% owner | 7 | — | 19 legs · 2,215,000 sh · $3,779,278 | — |
| NPEH, LLC — 10% owner | 7 | — | 19 legs · 2,215,000 sh · $3,779,278 | — |
| Alexander Ralph — Director | 1 | — | — | 1 |
| Kelliher Joseph T — Director | 1 | — | — | 1 |
| PETERSON CAROL R. — Director | 1 | — | — | 1 |
| Veltmann Alejandra — Director | 1 | — | — | 1 |
Recent Form 4 filings — Net Power Inc.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-10 | 4 | NPEH, LLC — 10% owner | Sale (S): 100,000 @ $1.94 · Sale (S): 150,000 @ $1.84 | EDGAR |
| 2026-09-10 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 100,000 @ $1.94 · Sale (S): 150,000 @ $1.84 | EDGAR |
| 2026-08-31 | 4 | Kelliher Joseph T — Director | Grant/award (A): 71,770 @ $0 | EDGAR |
| 2026-08-31 | 4 | PETERSON CAROL R. — Director | Grant/award (A): 71,770 @ $0 | EDGAR |
| 2026-08-31 | 4 | Veltmann Alejandra — Director | Grant/award (A): 71,770 @ $0 | EDGAR |
| 2026-08-31 | 4 | Alexander Ralph — Director | Grant/award (A): 71,770 @ $0 | EDGAR |
| 2026-08-27 | 4 | NPEH, LLC — 10% owner | Sale (S): 201,550 @ $1.91 · Sale (S): 41,350 @ $1.91 | EDGAR |
| 2026-08-27 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 201,550 @ $1.91 · Sale (S): 41,350 @ $1.91 | EDGAR |
| 2026-08-14 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 50,000 @ $1.63 · Sale (S): 200,000 @ $1.62 · Sale (S): 507,100 @ $1.95 | EDGAR |
| 2026-08-14 | 4 | NPEH, LLC — 10% owner | Sale (S): 50,000 @ $1.63 · Sale (S): 200,000 @ $1.62 · Sale (S): 507,100 @ $1.95 | EDGAR |
| 2026-08-11 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 60,345 @ $1.53 · Sale (S): 55,400 @ $1.55 · Sale (S): 35,000 @ $1.60 | EDGAR |
| 2026-08-11 | 4 | NPEH, LLC — 10% owner | Sale (S): 60,345 @ $1.53 · Sale (S): 55,400 @ $1.55 · Sale (S): 35,000 @ $1.60 | EDGAR |
| 2026-08-06 | 4 | NPEH, LLC — 10% owner | Sale (S): 120,000 @ $1.54 · Sale (S): 140,000 @ $1.51 · Sale (S): 89,255 @ $1.51 | EDGAR |
| 2026-08-06 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 120,000 @ $1.54 · Sale (S): 140,000 @ $1.51 · Sale (S): 89,255 @ $1.51 | EDGAR |
| 2026-07-30 | 4 | NPEH, LLC — 10% owner | Sale (S): 55,858 @ $1.47 · Sale (S): 45,000 @ $1.41 · Sale (S): 155,000 @ $1.43 | EDGAR |
| 2026-07-30 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 55,858 @ $1.47 · Sale (S): 45,000 @ $1.41 · Sale (S): 155,000 @ $1.43 | EDGAR |
| 2026-07-23 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 80,000 @ $1.53 · Sale (S): 90,000 @ $1.53 · Sale (S): 39,142 @ $1.51 | EDGAR |
| 2026-07-23 | 4 | NPEH, LLC — 10% owner | Sale (S): 80,000 @ $1.53 · Sale (S): 90,000 @ $1.53 · Sale (S): 39,142 @ $1.51 | EDGAR |
| 2026-05-14 | 4 | NPEH, LLC — 10% owner | Sale (S): 400,000 @ $2.44 · Sale (S): 35,000 @ $2.43 | EDGAR |
| 2026-05-14 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 400,000 @ $2.44 · Sale (S): 35,000 @ $2.43 | EDGAR |
| 2026-05-13 | 4/A | NPEH, LLC — 10% owner | Conversion (C): 3,000,000 · Other (J): 3,000,000 · Conversion (C): 3,000,000 (derivative) | EDGAR |
| 2026-05-13 | 4/A | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Conversion (C): 3,000,000 · Other (J): 3,000,000 · Conversion (C): 3,000,000 (derivative) | EDGAR |
| 2026-03-10 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Conversion (C): 3,000,000 · Other (J): 3,000,000 | EDGAR |
| 2026-03-10 | 4 | NPEH, LLC — 10% owner | Conversion (C): 3,000,000 · Other (J): 3,000,000 | EDGAR |
| 2026-03-05 | 4 | NPEH, LLC — 10% owner | Sale (S): 100,000 @ $2.04 | EDGAR |
| 2026-03-05 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 100,000 @ $2.04 | EDGAR |
| 2026-03-02 | 4 | NPEH, LLC — 10% owner | Sale (S): 1,881 @ $2 · Sale (S): 4,744 @ $2.00 · Sale (S): 79,858 @ $2.05 | EDGAR |
| 2026-03-02 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 1,881 @ $2 · Sale (S): 4,744 @ $2.00 · Sale (S): 79,858 @ $2.05 | EDGAR |
| 2026-02-23 | 4 | NPEH, LLC — 10% owner | Sale (S): 125,000 @ $2.14 · Sale (S): 63,517 @ $2.03 | EDGAR |
| 2026-02-23 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 125,000 @ $2.14 · Sale (S): 63,517 @ $2.03 | EDGAR |
| 2026-02-18 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 100,000 @ $2.14 · Sale (S): 75,000 @ $2.07 | EDGAR |
| 2026-02-18 | 4 | NPEH, LLC — 10% owner | Sale (S): 100,000 @ $2.14 · Sale (S): 75,000 @ $2.07 | EDGAR |
| 2026-02-12 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 40,000 @ $2.08 · Sale (S): 60,000 @ $2.02 · Sale (S): 150,000 @ $2.03 | EDGAR |
| 2026-02-12 | 4 | NPEH, LLC — 10% owner | Sale (S): 40,000 @ $2.08 · Sale (S): 60,000 @ $2.02 · Sale (S): 150,000 @ $2.03 | EDGAR |
| 2026-02-02 | 4 | NPEH, LLC — 10% owner | Sale (S): 54,780 @ $2.35 | EDGAR |
| 2026-02-02 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 54,780 @ $2.35 | EDGAR |
| 2026-01-28 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 130,000 @ $2.35 · Sale (S): 100,000 @ $2.38 · Sale (S): 65,220 @ $2.38 | EDGAR |
| 2026-01-28 | 4 | NPEH, LLC — 10% owner | Sale (S): 130,000 @ $2.35 · Sale (S): 100,000 @ $2.38 · Sale (S): 65,220 @ $2.38 | EDGAR |
| 2026-01-16 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 135,000 @ $2.74 · Sale (S): 135,000 @ $2.57 · Sale (S): 230,000 @ $2.63 | EDGAR |
| 2026-01-16 | 4 | NPEH, LLC — 10% owner | Sale (S): 135,000 @ $2.74 · Sale (S): 135,000 @ $2.57 · Sale (S): 230,000 @ $2.63 | EDGAR |
| 2025-12-29 | 4 | NPEH, LLC — 10% owner | Sale (S): 170,000 @ $2.21 | EDGAR |
| 2025-12-29 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 170,000 @ $2.21 | EDGAR |
| 2025-12-23 | 4 | NPEH, LLC — 10% owner | Sale (S): 100,000 @ $2.34 · Sale (S): 100,000 @ $2.26 · Sale (S): 130,000 @ $2.17 | EDGAR |
| 2025-12-23 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 100,000 @ $2.34 · Sale (S): 100,000 @ $2.26 · Sale (S): 130,000 @ $2.17 | EDGAR |
| 2025-12-11 | 4 | NPEH, LLC — 10% owner | Sale (S): 40,000 @ $2.82 | EDGAR |
| 2025-12-11 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 40,000 @ $2.82 | EDGAR |
| 2025-12-08 | 4 | NPEH, LLC — 10% owner | Sale (S): 65,000 @ $2.94 · Sale (S): 105,000 @ $2.91 · Sale (S): 140,000 @ $2.81 | EDGAR |
| 2025-12-08 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 65,000 @ $2.94 · Sale (S): 105,000 @ $2.91 · Sale (S): 140,000 @ $2.81 | EDGAR |
| 2025-12-02 | 4 | 8 Rivers Capital, LLC — 10% owner BEAUCHAMP DAMIAN R. — 10% owner | Sale (S): 200,000 @ $2.94 | EDGAR |
| 2025-12-02 | 4 | NPEH, LLC — 10% owner | Sale (S): 200,000 @ $2.94 | EDGAR |
Recent 8-K events — Net Power Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-09-11 | 8-K | 1.01 — Entry into a Material Definitive Agreement 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-09-03 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.01 — Completion of Acquisition or Disposition of Assets 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-13 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-05 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-05-11 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-13 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-03-09 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-05 | 8-K | 7.01 — Regulation FD Disclosure | EDGAR |
| 2025-11-13 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-08-11 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
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