0001209191-21-055277.txt : 20210909 0001209191-21-055277.hdr.sgml : 20210909 20210909161531 ACCESSION NUMBER: 0001209191-21-055277 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210907 FILED AS OF DATE: 20210909 DATE AS OF CHANGE: 20210909 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Themelis Nicholas CENTRAL INDEX KEY: 0001296468 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34091 FILM NUMBER: 211244570 MAIL ADDRESS: STREET 1: C/O MARKETAXESS HOLDINGS INC. STREET 2: 140 BROADWAY, 42ND FLOOR CITY: NEW YORK STATE: NY ZIP: 10005 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MARKETAXESS HOLDINGS INC CENTRAL INDEX KEY: 0001278021 STANDARD INDUSTRIAL CLASSIFICATION: SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211] 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 doc4.xml FORM 4 SUBMISSION X0306 4 2021-09-07 0 0001278021 MARKETAXESS HOLDINGS INC MKTX 0001296468 Themelis Nicholas C/O MARKETAXESS HOLDINGS INC. 55 HUDSON YARDS, 15TH FLOOR NEW YORK NY 10001 0 1 0 0 Chief Information Officer Common Stock, par value $0.003 per share 2021-09-07 4 S 0 100 456.85 D 13487 D Common Stock, par value $0.003 per share 2021-09-07 4 S 0 800 458.58 D 12687 D Common Stock, par value $0.003 per share 2021-09-07 4 S 0 500 460.36 D 12187 D Common Stock, par value $0.003 per share 2021-09-07 4 S 0 100 461.31 D 12087 D Common Stock, par value $0.003 per share 2021-09-07 4 S 0 100 463.33 D 11987 D Common Stock, par value $0.003 per share 2021-09-07 4 S 0 200 466.01 D 11787 D Common Stock, par value $0.003 per share 2021-09-07 4 S 0 200 473.40 D 11587 D This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. The transactions were executed in multiple trades at prices ranging from $458.00 to $458.93. The price above reflects the weighted average sales price. Detailed information regarding the number of shares sold at each separate price will be provided upon request by the Commission staff, the Issuer or a security holder of the Issuer. The transactions were executed in multiple trades at prices ranging from $460.00 to $460.82. The price above reflects the weighted average sales price. Detailed information regarding the number of shares sold at each separate price will be provided upon request by the Commission staff, the Issuer or a security holder of the Issuer. /s/ Jason Edelstein, as Attorney-in-Fact for Nicholas Themelis 2021-09-09