{"filing":{"accession_number":"0001193125-26-324933","cik":"0001278021","ticker":"MKTX","company_name":"MARKETAXESS HOLDINGS INC","form":"8-K","filing_date":"2026-07-30","report_date":"2026-07-29","primary_document":"d159148d8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1278021/000119312526324933/d159148d8k.htm"},"events":[{"id":22095,"run_id":19965,"accession_number":"0001193125-26-324933","anchor_item_number":"1.01","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.99,"summary":"MarketAxess entered into a definitive Agreement and Plan of Merger with Intercontinental Exchange on July 29, 2026, whereby ICE will acquire all outstanding shares of MarketAxess for $167 per share in cash, representing an equity value of approximately $6.0 billion and total enterprise value of approximately $5.7 billion. The transaction has been unanimously approved by both boards and is subject to stockholder approval.","company_name":"MARKETAXESS HOLDINGS INC","ticker":"MKTX","filing_date":"2026-07-30","form":"8-K","submitted_at":null,"items":[{"id":21933,"accession_number":"0001193125-26-324933","item_number":"1.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.99,"reasoning":"MarketAxess entered into a definitive Agreement and Plan of Merger with Intercontinental Exchange on July 29, 2026, whereby ICE will acquire all outstanding shares of MarketAxess for $167 per share in cash, representing an equity value of approximately $6.0 billion and total enterprise value of approximately $5.7 billion. The Board unanimously approved the transaction and recommended stockholder approval. This is a material acquisition transaction requiring Item 1.01 disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-30T11:45:42.593414+00:00","company_name":"","ticker":null,"filing_date":""},{"id":21935,"accession_number":"0001193125-26-324933","item_number":"7.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.99,"reasoning":"The filing discloses entry into a definitive merger agreement whereby Intercontinental Exchange will acquire MarketAxess for $167 per share in cash, representing approximately $6.0 billion in equity value and $5.7 billion in enterprise value. The press release explicitly states \"the Company and Parent issued a joint press release announcing that they have entered into the Merger Agreement,\" and the transaction has been unanimously approved by both boards. This is a material acquisition meeting the definition of ma_activity under Items 1.01/2.01.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-30T11:45:42.593414+00:00","company_name":"","ticker":null,"filing_date":""}]},{"id":22096,"run_id":19965,"accession_number":"0001193125-26-324933","anchor_item_number":"5.02","event_type":"exec_compensation","event_domain":"governance","is_material":true,"confidence":0.75,"summary":"In connection with the pending merger, MarketAxess amended severance and change-of-control arrangements for three named executives: CEO Christopher Concannon, CFO Ilene Fiszel Bieler, and General Counsel Scott Pintoff. The amendments modify the definition of \"Good Reason,\" accelerate vesting of RSUs and PSUs in a change-of-control protection period, and revise severance payment terms.","company_name":"MARKETAXESS HOLDINGS INC","ticker":"MKTX","filing_date":"2026-07-30","form":"8-K","submitted_at":null,"items":[{"id":21934,"accession_number":"0001193125-26-324933","item_number":"5.02","item_title":null,"event_type":"exec_compensation","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"The Item 5.02 disclosure centers on amendments to severance and change-of-control arrangements for three named executives: CEO Christopher Concannon, CFO Ilene Fiszel Bieler, and General Counsel Scott Pintoff. The amendments modify the definition of \"Good Reason,\" accelerate vesting of RSUs and PSUs in a change-of-control protection period, and revise severance payment terms. While the supplemental exhibit reveals an acquisition by Intercontinental Exchange, the Item 5.02 filing itself is primarily a compensatory arrangement disclosure triggered by the pending transaction, making exec_compensation the most precise classification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-30T11:45:42.593414+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":21933,"accession_number":"0001193125-26-324933","item_number":"1.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.99,"reasoning":"MarketAxess entered into a definitive Agreement and Plan of Merger with Intercontinental Exchange on July 29, 2026, whereby ICE will acquire all outstanding shares of MarketAxess for $167 per share in cash, representing an equity value of approximately $6.0 billion and total enterprise value of approximately $5.7 billion. The Board unanimously approved the transaction and recommended stockholder approval. This is a material acquisition transaction requiring Item 1.01 disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-30T11:45:42.593414+00:00","company_name":"MARKETAXESS HOLDINGS INC","ticker":"MKTX","filing_date":"2026-07-30"},{"id":21934,"accession_number":"0001193125-26-324933","item_number":"5.02","item_title":null,"event_type":"exec_compensation","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"The Item 5.02 disclosure centers on amendments to severance and change-of-control arrangements for three named executives: CEO Christopher Concannon, CFO Ilene Fiszel Bieler, and General Counsel Scott Pintoff. The amendments modify the definition of \"Good Reason,\" accelerate vesting of RSUs and PSUs in a change-of-control protection period, and revise severance payment terms. While the supplemental exhibit reveals an acquisition by Intercontinental Exchange, the Item 5.02 filing itself is primarily a compensatory arrangement disclosure triggered by the pending transaction, making exec_compensation the most precise classification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-30T11:45:42.593414+00:00","company_name":"MARKETAXESS HOLDINGS INC","ticker":"MKTX","filing_date":"2026-07-30"},{"id":21935,"accession_number":"0001193125-26-324933","item_number":"7.01","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.99,"reasoning":"The filing discloses entry into a definitive merger agreement whereby Intercontinental Exchange will acquire MarketAxess for $167 per share in cash, representing approximately $6.0 billion in equity value and $5.7 billion in enterprise value. The press release explicitly states \"the Company and Parent issued a joint press release announcing that they have entered into the Merger Agreement,\" and the transaction has been unanimously approved by both boards. This is a material acquisition meeting the definition of ma_activity under Items 1.01/2.01.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-30T11:45:42.593414+00:00","company_name":"MARKETAXESS HOLDINGS INC","ticker":"MKTX","filing_date":"2026-07-30"}]}