0000950170-24-071911.txt : 20240611 0000950170-24-071911.hdr.sgml : 20240611 20240611161509 ACCESSION NUMBER: 0000950170-24-071911 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240607 FILED AS OF DATE: 20240611 DATE AS OF CHANGE: 20240611 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Casper Stephen P CENTRAL INDEX KEY: 0001296969 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34091 FILM NUMBER: 241035937 MAIL ADDRESS: STREET 1: C/O CHARTER ATLANTIC CORPORATION STREET 2: 200 PARK AVENUE CITY: NEW YORK STATE: NY ZIP: 10166 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MARKETAXESS HOLDINGS INC CENTRAL INDEX KEY: 0001278021 STANDARD INDUSTRIAL CLASSIFICATION: SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211] ORGANIZATION NAME: 02 Finance IRS NUMBER: 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 2024-06-07 0001278021 MARKETAXESS HOLDINGS INC MKTX 0001296969 Casper Stephen P C/O MARKETAXESS HOLDINGS INC. 55 HUDSON YARDS, 15TH FLOOR NEW YORK NY 10001 true false false false false Common Stock, par value $0.003 per share 2024-06-07 4 S false 500 199.48 D 10201 D Common Stock, par value $0.003 per share 44808 I By family trust /s/ Jason Edelstein, as Attorney-in-Fact for Stephen P. Casper 2024-06-11