{"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","discovered_at":"2026-05-14T18:03:41.177332+00:00","generated_at":"2026-06-13T14:20:57.672219+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"NET Power dismisses Withum, engages Grant Thornton as new auditor","bullets":["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."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-23-053519","json":"https://secwatch.observer/filing/0001213900-23-053519.json","markdown":"https://secwatch.observer/filing/0001213900-23-053519.md","text":"https://secwatch.observer/filing/0001213900-23-053519.txt","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"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-13T14:20:57.672219+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"624a0f85730882fe61ec472f4905c37318f4a840","claim":"NET Power Inc. dismissed WithumSmith+Brown, PC as its auditor.","evidence_excerpt":"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_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1845437/000121390023053519/0001213900-23-053519-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"dismissal"},{"label":"Auditor","value":"WithumSmith+Brown, PC"}],"fact_type":"auditor_change"},{"claim_id":"6de9e343fc85ffa70efa86154201d203d451ec3b","claim":"NET Power Inc. engaged Grant Thornton LLP as its auditor.","evidence_excerpt":"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_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1845437/000121390023053519/0001213900-23-053519-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"engagement"},{"label":"Auditor","value":"Grant Thornton LLP"}],"fact_type":"auditor_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}