0001567619-21-004949.txt : 20210225 0001567619-21-004949.hdr.sgml : 20210225 20210225172342 ACCESSION NUMBER: 0001567619-21-004949 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210224 FILED AS OF DATE: 20210225 DATE AS OF CHANGE: 20210225 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: 21681860 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 2021-02-24 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 2021-02-24 4 A 0 9600 0 A 34892 D These shares of restricted stock will vest in four equal quarterly installments starting on March 1, 2024. /s/ John B. Chang 2021-02-24