{"schema_version":"secwatch.filing_event.v1","accession":"0001436126-23-000006","form_type":"8-K","ticker":"MG","cik":"0001436126","company_name":"Mistras Group, Inc.","filed_at":"2023-02-09T23:59:59+00:00","discovered_at":"2026-05-14T18:03:44.976127+00:00","generated_at":"2026-06-19T19:56:10.994443+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Mistras Group COO Jonathan Wolk departs immediately; AlixPartners hired for operational review","bullets":["Jonathan Wolk's active employment as COO ceased immediately, with severance per prior proxy terms.","CEO Dennis Bertolotti will assume COO duties on an interim basis.","AlixPartners engaged to identify margin improvement and sustained cost savings to accelerate EBITDA growth.","Board states it is focused on positioning the company to drive shareholder value."],"urls":{"canonical":"https://secwatch.observer/filing/0001436126-23-000006","json":"https://secwatch.observer/filing/0001436126-23-000006.json","markdown":"https://secwatch.observer/filing/0001436126-23-000006.md","text":"https://secwatch.observer/filing/0001436126-23-000006.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1436126/000143612623000006/0001436126-23-000006-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1436126/000143612623000006/mg-20230208.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-19T19:56:10.994443+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":"01a8b0d142","claim":"Jonathan Wolk departed as Senior Executive Vice President and Chief Operating Officer at Mistras Group, Inc..","evidence_excerpt":"On February 8, 2023, Mistras Group, Inc. (the \"Company\") notified its Senior Executive Vice President and Chief Operating Officer, Jonathan Wolk, that his active employment would cease immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1436126/000143612623000006/0001436126-23-000006-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"ceased active employment"},{"label":"Role","value":"Senior Executive Vice President and Chief Operating Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}