0001567619-21-000180.txt : 20210105 0001567619-21-000180.hdr.sgml : 20210105 20210105131915 ACCESSION NUMBER: 0001567619-21-000180 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210104 FILED AS OF DATE: 20210105 DATE AS OF CHANGE: 20210105 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Chang John B. CENTRAL INDEX KEY: 0001775672 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-51829 FILM NUMBER: 21504693 MAIL ADDRESS: STREET 1: 2450 N ST NW STREET 2: 4TH FLOOR CITY: WASHINGTON STATE: DC ZIP: 20037 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: COGENT COMMUNICATIONS HOLDINGS, INC. CENTRAL INDEX KEY: 0001158324 STANDARD INDUSTRIAL CLASSIFICATION: COMMUNICATION SERVICES, NEC [4899] IRS NUMBER: 522337274 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2450 N STREET, NW CITY: WASHINGTON STATE: DC ZIP: 20037 BUSINESS PHONE: 2022954200 MAIL ADDRESS: STREET 1: 2450 N STREET, NW CITY: WASHINGTON STATE: DC ZIP: 20037 FORMER COMPANY: FORMER CONFORMED NAME: COGENT COMMUNICATIONS GROUP INC DATE OF NAME CHANGE: 20010828 4 1 doc1.xml FORM 4 X0306 4 2021-01-04 0 0001158324 COGENT COMMUNICATIONS HOLDINGS, INC. CCOI 0001775672 Chang John B. 2450 N ST NW 4TH FLOOR WASHINGTON DC 20037 0 1 0 0 VP & Chief Legal Officer common stock 2021-01-04 4 S 0 558 60.00 D 25292 D The sale of shares of common stock reported here was implemented pursuant to Mr. Chang's structured sale plan (10b5-1). /S/John Chang 2021-01-05