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MKTX SEC Filings

SEC filings for MKTX. Annual and quarterly reports, 8-K events, Form 4 insider filings and 13D/G stake disclosures.

All10-K10-Q8-KProxyForm 413D/GLast 12 months
FormFiledAccession
4Pintoff ScottGeneral Counsel and SecretaryOct 14, 2026EDGAR
8-KSep 29, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretarySep 11, 2026EDGAR
4Cruger William Frank Jr.Sep 11, 2026EDGAR
SC 13G/AamendedNorth Reef Capital Management LP and 2 other reporting personsAug 14, 2026EDGAR
4Portney Emily HopeAug 13, 2026EDGAR
SC 13G/AamendedAQR CAPITAL MANAGEMENT LLC and 1 other reporting personAug 13, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryAug 10, 2026EDGAR
4Chwick JaneAug 7, 2026EDGAR
10-QAug 7, 2026EDGAR
SC 13G/AamendedPRIMECAP MANAGEMENT CO/CA/Aug 6, 2026EDGAR
8-KJul 30, 2026EDGAR
8-KJul 30, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryJul 10, 2026EDGAR
4HERNANDEZ CARLOS MAURICIOJun 18, 2026EDGAR
4Altobello Nancy A.Jun 12, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryJun 12, 2026EDGAR
4Cifu Douglas AJun 12, 2026EDGAR
4KETCHUM RICHARD GJun 12, 2026EDGAR
4SCHICIANO KENNETH TJun 12, 2026EDGAR
4Portney Emily HopeJun 12, 2026EDGAR
4Chwick JaneJun 12, 2026EDGAR
4Begleiter Steven LJun 12, 2026EDGAR
4HERNANDEZ CARLOS MAURICIOJun 12, 2026EDGAR
4Gibson KourtneyJun 12, 2026EDGAR
4Hoornweg RobertoJun 12, 2026EDGAR
4Cruger William Frank Jr.Jun 12, 2026EDGAR
8-KJun 10, 2026EDGAR
4Fiszel Bieler IleneChief Financial OfficerJun 3, 2026EDGAR
SC 13GNorth Reef Capital Management LP and 2 other reporting personsMay 15, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryMay 11, 2026EDGAR
8-KMay 7, 2026EDGAR
10-QMay 7, 2026EDGAR
SC 13G/AamendedAbigail P. Johnson and 1 other reporting personMay 6, 2026EDGAR
4Quan WilliamChief Technology OfficerMay 4, 2026EDGAR
SC 13GVanguard Capital ManagementApr 30, 2026EDGAR
SC 13GVanguard Portfolio ManagementApr 29, 2026EDGAR
8-K/AamendedApr 17, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryApr 10, 2026EDGAR
4CONCANNON CHRISTOPHER RChief Executive OfficerApr 6, 2026EDGAR
SC 13G/AamendedThe Vanguard GroupMar 27, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryMar 10, 2026EDGAR
4Cifu Douglas AMar 2, 2026EDGAR
4SCHICIANO KENNETH TMar 2, 2026EDGAR
4Panchal Naineshkumar ShantilalChief Information OfficerMar 2, 2026EDGAR
10-KFeb 24, 2026EDGAR
4CONCANNON CHRISTOPHER RChief Executive OfficerFeb 17, 2026EDGAR
4Fiszel Bieler IleneChief Financial OfficerFeb 17, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryFeb 17, 2026EDGAR
4Panchal Naineshkumar ShantilalChief Information OfficerFeb 17, 2026EDGAR
4McPherson Kevin MChief Revenue OfficerFeb 17, 2026EDGAR
4Mirwani Nitin AChief Accounting OfficerFeb 17, 2026EDGAR
8-KFeb 17, 2026EDGAR
SC 13GAQR CAPITAL MANAGEMENT LLC and 1 other reporting personFeb 13, 2026EDGAR
SC 13G/AamendedPRIMECAP MANAGEMENT CO/CA/Feb 11, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryFeb 10, 2026EDGAR
SC 13G/AamendedBlackRock, Inc.Feb 6, 2026EDGAR
8-KFeb 6, 2026EDGAR
8-KJan 26, 2026EDGAR
SC 13GBlackRock, Inc.Jan 21, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryJan 12, 2026EDGAR
4Pintoff ScottGeneral Counsel and SecretaryDec 12, 2025EDGAR
8-KDec 9, 2025EDGAR
4HERNANDEZ CARLOS MAURICIONov 26, 2025EDGAR
SC 13G/AamendedT. Rowe Price Investment Management, Inc.Nov 14, 2025EDGAR
SC 13GPRIMECAP MANAGEMENT CO/CA/Nov 14, 2025EDGAR
8-KNov 7, 2025EDGAR
10-QNov 7, 2025EDGAR
SC 13G/AamendedThe Vanguard GroupOct 31, 2025EDGAR
SC 13G/AamendedBlackRock, Inc.Oct 17, 2025EDGAR

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Source: SEC EDGAR.