{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-161620","form_type":"8-K/A","ticker":"MKTX","cik":"0001278021","company_name":"MARKETAXESS HOLDINGS INC","filed_at":"2026-04-17T23:59:59+00:00","discovered_at":"2026-05-14T18:02:32.081032+00:00","generated_at":"2026-05-15T05:27:46.486463+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"MarketAxess assigns Cifu to Compensation/Talent and Finance committees; Schiciano to Audit","bullets":["Douglas A. Cifu appointed to Compensation & Talent Committee and Finance Committee.","Kenneth T. Schiciano appointed to Audit Committee.","Committee appointments effective May 1, 2026.","Both directors were elected to the Board effective March 1, 2026, announced Jan 26, 2026.","No other changes to board composition or committee memberships reported."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-161620","json":"https://secwatch.observer/filing/0001193125-26-161620.json","markdown":"https://secwatch.observer/filing/0001193125-26-161620.md","text":"https://secwatch.observer/filing/0001193125-26-161620.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1278021/000119312526161620/0001193125-26-161620-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1278021/000119312526161620/mktx-20260122.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T05:27:46.486463+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"}