{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-24-045398","form_type":"8-K","ticker":"MKTX","cik":"0001278021","company_name":"MARKETAXESS HOLDINGS INC","filed_at":"2024-02-26T23:59:59+00:00","discovered_at":"2026-05-14T18:03:23.661009+00:00","generated_at":"2026-06-05T14:38:15.166508+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"MarketAxess appoints Ilene Fiszel Bieler as CFO effective May 22, 2024","bullets":["Ilene Fiszel Bieler appointed CFO, starting on/about May 22, 2024, replacing Christopher Gerosa (left Jan 31, 2024).","Base salary $450k; target cash bonus $800k; target annual equity grant $1.15M (50% time-based, 50% performance-based).","One-time make-whole: $1.15M cash (reduced by forfeited awards) and $2.7M in RSUs vesting over 3 years.","Severance: 1x base+avg bonus (12-month installments) for non-CIC terminations; 1.5x lump sum for CIC terminations; health benefits.","Bieler previously EVP, COO at State Street Global Markets; earlier roles at Barclays and Citigroup; reports to CEO Chris Concannon."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-045398","json":"https://secwatch.observer/filing/0001193125-24-045398.json","markdown":"https://secwatch.observer/filing/0001193125-24-045398.md","text":"https://secwatch.observer/filing/0001193125-24-045398.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1278021/000119312524045398/0001193125-24-045398-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1278021/000119312524045398/d798718d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-05T14:38:15.166508+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":"86f2b4f915","claim":"Ilene Fiszel Bieler was appointed as Chief Financial Officer at MARKETAXESS HOLDINGS INC.","evidence_excerpt":"On February 21, 2024, MarketAxess Holdings Inc. (the “Company”) appointed Ilene Fiszel Bieler as Chief Financial Officer of the Company and to act as the Company’s principal financial officer for purposes of the Company’s filings with the U.S. Securities and Exchange Commission (the “SEC”), effective on her start date with the Company, which is currently expected to be May 22, 2024 (the “Effective Date”).","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1278021/000119312524045398/0001193125-24-045398-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}