On June 5, 2024, MarketAxess Holdings Inc. (the “Company”) held its 2024 Annual Meeting of Stockholders (the “2024 Annual Meeting”). At the 2024 Annual Meeting, upon the recommendation of the Company’s Board of Directors, the stockholders of the Company approved an amendment (the “Amendment”) to the Company’s amended and restated certificate of incorporation (the “Certificate of Incorporation”) to provide for exculpation of certain corporate officers as permitted by the recent amendments to the Delaware General Corporation Law (the “DGCL”). The Amendment updates Article VII of the Certificate of Incorporation to limit the personal liability of certain officers for monetary damages for breaches of fiduciary duty as an officer, except to the extent such limitation on liability is not permitted under the DGCL. The Amendment became effective upon the Company’s filing of a certificate of amendment to its Certificate of Incorporation with the Secretary of State of the State of Delaware on June 6, 2024.