{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-23-034741","form_type":"8-K","ticker":"MRTN","cik":"0000799167","company_name":"MARTEN TRANSPORT LTD","filed_at":"2023-12-18T23:59:59+00:00","discovered_at":"2026-05-14T18:03:32.035610+00:00","generated_at":"2026-06-07T11:33:31.385563+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Marten Transport appoints Adam Phillips as EVP and COO, effective Dec 13, 2023","bullets":["Adam Phillips appointed Executive VP and COO effective Dec 13, 2023; base salary $310,000/year.","Phillips receives $26,539 for accumulated vacation pay; eligible for cash bonus under incentive plan.","Change-in-control severance: lump sum 100% base salary plus 1x highest bonus in prior 3 years.","Phillips has served as COO since March 2023; prior roles include President of Western Operations."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-23-034741","json":"https://secwatch.observer/filing/0001437749-23-034741.json","markdown":"https://secwatch.observer/filing/0001437749-23-034741.md","text":"https://secwatch.observer/filing/0001437749-23-034741.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/799167/000143774923034741/0001437749-23-034741-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/799167/000143774923034741/mrtn20231215_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T11:33:31.385563+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":"52726dc6f0","claim":"Adam Phillips was appointed as Executive Vice President and Chief Operating Officer at MARTEN TRANSPORT LTD.","evidence_excerpt":"On December 13, 2023, the Board of Directors of Marten Transport, Ltd. (the “Company”) approved the appointment of Adam Phillips as its Executive Vice President and Chief Operating Officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/799167/000143774923034741/0001437749-23-034741-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"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"}