0000950170-25-080925.txt : 20250603 0000950170-25-080925.hdr.sgml : 20250603 20250603161016 ACCESSION NUMBER: 0000950170-25-080925 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20250401 FILED AS OF DATE: 20250603 DATE AS OF CHANGE: 20250603 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Cianciulli Michael R. CENTRAL INDEX KEY: 0002007722 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34091 FILM NUMBER: 251019547 MAIL ADDRESS: STREET 1: 55 HUDSON YARDS STREET 2: 15TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10001 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MARKETAXESS HOLDINGS INC CENTRAL INDEX KEY: 0001278021 STANDARD INDUSTRIAL CLASSIFICATION: SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211] ORGANIZATION NAME: 09 Crypto Assets EIN: 522230784 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 55 HUDSON YARDS, 15TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10001 BUSINESS PHONE: 212-831-6000 MAIL ADDRESS: STREET 1: 55 HUDSON YARDS, 15TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10001 FORMER COMPANY: FORMER CONFORMED NAME: MARKETAXESS HOLDING INC DATE OF NAME CHANGE: 20040129 4 1 ownership.xml 4 X0508 4 2025-04-01 0001278021 MARKETAXESS HOLDINGS INC MKTX 0002007722 Cianciulli Michael R. C/O MARKETAXESS HOLDINGS INC. 55 HUDSON YARDS, 15TH FLOOR NEW YORK NY 10001 false true false false Head of Ext Rep & Comp Accting false Common Stock, par value $0.003 per share 2025-04-01 4 A false 232 0 A 1155 D Represents a grant of restricted stock units pursuant to the Company's 2020 Equity Incentive Plan. The restricted stock units shall vest in four equal installments on April 1, 2026, April 1, 2027, April 1, 2028 and April 1, 2029. /s/ Conor Colasurdo, as Attorney-in-Fact for Michael R. Cianciulli 2025-06-03