{"schema_version":"secwatch.filing_event.v1","accession":"0001564590-22-013079","form_type":"8-K","ticker":"MEC","cik":"0001766368","company_name":"Mayville Engineering Company, Inc.","filed_at":"2022-04-01T23:59:59+00:00","discovered_at":"2026-05-14T18:04:02.222818+00:00","generated_at":"2026-06-26T10:57:33.796636+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"MEC CEO Robert D. Kamphuis to retire on Sept 30, 2022; national search launched","bullets":["Kamphuis, CEO since 2005, will retire as Chairman, President and CEO on September 30, 2022.","Under his leadership, MEC grew from ~$62M revenue (660 employees) to ~$450M (2,250 employees) by 2021.","Company retains a nationally recognized executive search firm to find a new CEO.","Retirement agreement provides base salary through Sept 30, pro-rated 2022 bonus; unvested equity forfeited.","Company will repurchase Kamphuis's residence at original price if requested before March 15, 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0001564590-22-013079","json":"https://secwatch.observer/filing/0001564590-22-013079.json","markdown":"https://secwatch.observer/filing/0001564590-22-013079.md","text":"https://secwatch.observer/filing/0001564590-22-013079.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1766368/000156459022013079/0001564590-22-013079-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1766368/000156459022013079/mec-8k_20220331.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-26T10:57:33.796636+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":"06d8cbd697","claim":"Robert D. Kamphuis departed as Chairman, President and Chief Executive Officer at Mayville Engineering Company, Inc..","evidence_excerpt":"On March 31, 2022 Mayville Engineering Company, Inc. (the “Company”) announced that Robert D. Kamphuis, the Company’s Chairman, President and Chief Executive Officer, will retire (including as a director of the Company) as of September 30, 2022 (the “Retirement Date”).","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1766368/000156459022013079/0001564590-22-013079-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Chairman, President and Chief Executive Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}