{"schema_version":"secwatch.filing_event.v1","accession":"0001436126-23-000016","form_type":"8-K","ticker":"MG","cik":"0001436126","company_name":"Mistras Group, Inc.","filed_at":"2023-04-03T23:59:59+00:00","discovered_at":"2026-05-14T18:03:38.859577+00:00","generated_at":"2026-06-17T06:54:26.870823+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Mistras Group dismisses KPMG, appoints PwC as auditor for FY 2023","bullets":["On March 29, 2023, Mistras Group dismissed KPMG and engaged PwC as independent auditor for the year ending Dec 31, 2023.","No adverse opinions or modifications in KPMG's audit reports on financial statements or internal controls for 2021 and 2022.","No disagreements or reportable events occurred during 2021, 2022, or the interim period through March 29, 2023.","Audit Committee approved the auditor change; KPMG letter confirming agreement is attached as Exhibit 16.1."],"urls":{"canonical":"https://secwatch.observer/filing/0001436126-23-000016","json":"https://secwatch.observer/filing/0001436126-23-000016.json","markdown":"https://secwatch.observer/filing/0001436126-23-000016.md","text":"https://secwatch.observer/filing/0001436126-23-000016.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1436126/000143612623000016/0001436126-23-000016-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1436126/000143612623000016/auditorchange8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T06:54:26.870823+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":"6131514c0291a26cc1bb2d34f43777e26b5f5abb","claim":"Mistras Group, Inc. dismissed KPMG LLP as its auditor.","evidence_excerpt":"On March 29, 2023, Mistras Group, Inc. (the “Company”) dismissed KPMG LLP (“KPMG”) as the Company’s independent registered public accounting firm and appointed PricewaterhouseCoopers LLP (“PwC”) 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/1436126/000143612623000016/0001436126-23-000016-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"dismissal"},{"label":"Auditor","value":"KPMG LLP"},{"label":"Successor","value":"PricewaterhouseCoopers LLP"}],"fact_type":"auditor_change"},{"claim_id":"8efe97a600351f0c01600b9dcf45a67734f77164","claim":"Mistras Group, Inc. engaged PricewaterhouseCoopers LLP as its auditor.","evidence_excerpt":"On March 29, 2023, Mistras Group, Inc. (the “Company”) dismissed KPMG LLP (“KPMG”) as the Company’s independent registered public accounting firm and appointed PricewaterhouseCoopers LLP (“PwC”) 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/1436126/000143612623000016/0001436126-23-000016-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"engagement"},{"label":"Auditor","value":"PricewaterhouseCoopers LLP"}],"fact_type":"auditor_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}