{"schema_version":"secwatch.filing_event.v1","accession":"0001679268-25-000012","form_type":"8-K","ticker":"TUSK","cik":"0001679268","company_name":"MAMMOTH ENERGY SERVICES, INC.","filed_at":"2025-03-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:04.413568+00:00","generated_at":"2026-05-24T22:36:31.024171+00:00","sec_items":["4.01","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Mammoth Energy dismisses Grant Thornton as auditor, appoints Deloitte & Touche","bullets":["Audit committee dismissed Grant Thornton LLP on March 7, 2025, effective immediately.","Deloitte & Touche LLP engaged as new independent auditor for fiscal year ending December 31, 2025.","No disagreements or reportable events existed with Grant Thornton during fiscal years 2024, 2023, or through March 7, 2025.","Grant Thornton's audit reports for 2024 and 2023 were unqualified; Grant Thornton filed a letter agreeing with the statements as Exhibit 16.1."],"urls":{"canonical":"https://secwatch.observer/filing/0001679268-25-000012","json":"https://secwatch.observer/filing/0001679268-25-000012.json","markdown":"https://secwatch.observer/filing/0001679268-25-000012.md","text":"https://secwatch.observer/filing/0001679268-25-000012.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1679268/000167926825000012/0001679268-25-000012-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1679268/000167926825000012/tusk-20250307.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T22:36:31.024171+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":"1361fea966a606dc71e4f876e91f2e10378ba112","claim":"MAMMOTH ENERGY SERVICES, INC. engaged Deloitte & Touche LLP as its auditor.","evidence_excerpt":"Also on March 7, 2025, the Audit Committee approved the engagement of Deloitte & Touche LLP (“Deloitte”) as its new independent registered public accounting firm. Deloitte’s appointment will be for the Company’s fiscal year ending December 31, 2025, and related interim periods.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1679268/000167926825000012/0001679268-25-000012-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"engagement"},{"label":"Auditor","value":"Deloitte & Touche LLP"}],"fact_type":"auditor_change"},{"claim_id":"354c30f5856b573bbfcf3791d0cd09430a3aca51","claim":"MAMMOTH ENERGY SERVICES, INC. dismissed Grant Thornton LLP as its auditor.","evidence_excerpt":"(the “Company”) approved the dismissal of Grant Thornton LLP (“Grant Thornton”) 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/1679268/000167926825000012/0001679268-25-000012-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"dismissal"},{"label":"Auditor","value":"Grant Thornton LLP"},{"label":"Successor","value":"Deloitte & Touche LLP"}],"fact_type":"auditor_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}