{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-22-018903","form_type":"8-K","ticker":"MEC","cik":"0001766368","company_name":"Mayville Engineering Company, Inc.","filed_at":"2022-12-21T23:59:59+00:00","discovered_at":"2026-05-14T18:03:52.035659+00:00","generated_at":"2026-06-21T00:58:08.160519+00:00","sec_items":["5.02","5.03","9.01"],"event_type":"leadership","sentiment":"positive","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Mayville Engineering elects Robert McCormick to board of directors","bullets":["Robert L. McCormick appointed as Class III director effective Dec 21, 2022.","Board size increased from 7 to 8 directors prior to his election.","McCormick is CEO of Douglas Dynamics (NYSE: PLOW) and will serve on Audit Committee.","He is an independent director; term expires at 2023 annual meeting.","Press release highlights his manufacturing and financial expertise."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-22-018903","json":"https://secwatch.observer/filing/0001558370-22-018903.json","markdown":"https://secwatch.observer/filing/0001558370-22-018903.md","text":"https://secwatch.observer/filing/0001558370-22-018903.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1766368/000155837022018903/0001558370-22-018903-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1766368/000155837022018903/tmb-20221221x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T00:58:08.160519+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":"de669dd71a","claim":"Robert L. McCormick was elected as Director at Mayville Engineering Company, Inc..","evidence_excerpt":"On December 21, 2022, the Board of Directors of Mayville Engineering Company, Inc. (the “Company”) elected Robert L. McCormick as a Class III director of the Company to serve for a term to expire at the Company’s 2023 annual meeting of shareholders.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1766368/000155837022018903/0001558370-22-018903-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"84559914f7101432b93fff3a49d7eb3f0f53eb04","claim":"Mayville Engineering Company, Inc.: Amendment to Section 3.01 of Article III of the Bylaws to increase the size of the Board of Directors from seven to eight directors (effective 2022-12-21).","evidence_excerpt":"the Board of Directors approved an amendment to Section 3.01 of Article III of the Bylaws of the Company to increase the size of the Board of Directors from seven directors to eight directors. This amendment was effective on December 21, 2022.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1766368/000155837022018903/0001558370-22-018903-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2022-12-21"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}