{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-234922","form_type":"8-K","ticker":"MKTX","cik":"0001278021","company_name":"MARKETAXESS HOLDINGS INC","filed_at":"2023-09-14T23:59:59+00:00","discovered_at":"2026-05-14T18:03:33.416134+00:00","generated_at":"2026-06-10T17:21:46.587059+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"MarketAxess elects Carlos Hernandez to Board of Directors effective Sept 13, 2023","bullets":["Carlos Hernandez elected to MarketAxess Board, effective September 13, 2023; will serve on Finance Committee.","Hernandez previously served as director from 2006 to 2019; deemed independent under NASDAQ rules.","Recently retired from JPMorgan Chase; was Executive Chair of Investment and Corporate Banking and member of Operating Committee.","Compensation will follow standard non-employee director plan as described in April 2023 proxy.","No material transactions between Hernandez and company exceeding $120,000 in past year."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-234922","json":"https://secwatch.observer/filing/0001193125-23-234922.json","markdown":"https://secwatch.observer/filing/0001193125-23-234922.md","text":"https://secwatch.observer/filing/0001193125-23-234922.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1278021/000119312523234922/0001193125-23-234922-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1278021/000119312523234922/d551016d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T17:21:46.587059+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":"43a2cb33c2","claim":"Carlos Hernandez was elected as Director at MARKETAXESS HOLDINGS INC.","evidence_excerpt":"On September 13, 2023, the Board of Directors (the “ Board ”) of MarketAxess Holdings Inc. (the “ Company ”) elected Carlos Hernandez to serve on the Company’s Board of Directors, effective September 13, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1278021/000119312523234922/0001193125-23-234922-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}