---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-23-053519"
form_type: "8-K"
ticker: "NPWR"
cik: "0001845437"
company_name: "NET Power Inc."
filed_at: "2023-06-30T23:59:59+00:00"
generated_at: "2026-06-13T14:20:57.672219+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# NET Power dismisses Withum, engages Grant Thornton as new auditor

## Summary
- Dismissed WithumSmith+Brown, PC on June 29, 2023; no disagreements with prior auditor.
- Withum's report included an explanatory paragraph about substantial doubt as going concern if no business combination by June 2023.
- Engaged Grant Thornton LLP as new independent auditor for fiscal year ending Dec 31, 2023.
- GT previously audited NET Power, LLC before its business combination with Rice Acquisition Corp. II.
- No consultations with GT prior to engagement.

## SEC filing metadata
- accession: 0001213900-23-053519
- form_type: 8-K
- ticker: NPWR
- cik: 0001845437
- company_name: NET Power Inc.
- filed_at: 2023-06-30T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1845437/000121390023053519/0001213900-23-053519-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1845437/000121390023053519/ea181199-8k_netpower.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-23-053519
- JSON: https://secwatch.observer/filing/0001213900-23-053519.json
- Plain text: https://secwatch.observer/filing/0001213900-23-053519.txt

## Key facts
- Auditor Changes
  NET Power Inc. dismissed WithumSmith+Brown, PC as its auditor.
  - Action: dismissal
  - Auditor: WithumSmith+Brown, PC
  source text: On June 29, 2023, the audit committee (the “Audit Committee”) of the board of directors of NET Power Inc. (the “Company”) dismissed WithumSmith+Brown, PC (“Withum”) as the Company’s independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1845437/000121390023053519/0001213900-23-053519-index.htm
- Auditor Changes
  NET Power Inc. engaged Grant Thornton LLP as its auditor.
  - Action: engagement
  - Auditor: Grant Thornton LLP
  source text: On June 29, 2023, the Audit Committee approved the engagement of Grant Thornton LLP (“GT”) as the Company’s independent registered public accounting firm to audit the Company’s financial statements as of and for the year ending December 31, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1845437/000121390023053519/0001213900-23-053519-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.