{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-055003","form_type":"8-K","ticker":"MKTX","cik":"0001278021","company_name":"MARKETAXESS HOLDINGS INC","filed_at":"2026-02-17T23:59:59+00:00","discovered_at":"2026-05-14T18:02:34.693350+00:00","generated_at":"2026-05-16T02:21:20.057589+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"MarketAxess CIO Naineshkumar Panchal to depart April 1; new CTO identified","bullets":["Naineshkumar Panchal's service as CIO will end effective April 1, 2026.","Separation treated as termination without cause; severance per March 2022 agreement.","Company has identified a new Chief Technology Officer; announcement expected later in Q1 2026.","Panchal will receive severance payments and benefits subject to a general release of claims."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-055003","json":"https://secwatch.observer/filing/0001193125-26-055003.json","markdown":"https://secwatch.observer/filing/0001193125-26-055003.md","text":"https://secwatch.observer/filing/0001193125-26-055003.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1278021/000119312526055003/0001193125-26-055003-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1278021/000119312526055003/mktx-20260216.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T02:21:20.057589+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}