COGENT COMMUNICATIONS HOLDINGS, INC. — 8-K Filings
223 8-K filings on record
This page lists all 8-K filings submitted to the SEC by COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI), sorted by most recent first. Each row links to the full filing on EdgarLookup. COGENT COMMUNICATIONS HOLDINGS, INC. has filed 223 8-K documents with the SEC since 2017. To view all SEC filings by COGENT COMMUNICATIONS HOLDINGS, INC., see the full filings list.
All
10-K
10-Q
10-Q/A
144
144/A
3
3/A
4
4/A
424B3
424B4
424B5
424B7
425
5
8-A12B
8-A12G
8-K
8-K/A
8-K12G3
ARS
CERTAMX
CORRESP
CT ORDER
DEF 14A
DEF 14C
DEFA14A
FWP
IRANNOTICE
POS AM
PRE 14A
PRE 14C
PRER14A
PRER14C
RW
S-1
S-1/A
S-3
S-3/A
S-3ASR
S-4
S-4/A
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC 14D9
SC 14D9/A
SC TO-I
SC TO-I/A
SC TO-T
SC TO-T/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 8-K | FORM 8-K | 0001104659-22-001481 | Jan 5, 2022 | Jan 3, 2022 |
| 8-K | FORM 8-K | 0001104659-21-154674 | Dec 30, 2021 | Dec 23, 2021 |
| 8-K | FORM 8-K | 0001104659-21-134006 | Nov 4, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-100433 | Aug 5, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-077096 | Jun 4, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-064522 | May 11, 2021 | May 7, 2021 |
| 8-K | FORM 8-K | 0001104659-21-058995 | Apr 30, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-057430 | Apr 29, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-056977 | Apr 29, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-056651 | Apr 28, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-056652 | Apr 28, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-047095 | Apr 6, 2021 | — |
| 8-K | FORM 8-K | 0001104659-21-042387 | Mar 26, 2021 | Mar 23, 2021 |
| 8-K | FORM 8-K | 0001104659-21-029141 | Feb 26, 2021 | Feb 24, 2021 |
| 8-K | FORM 8-K | 0001104659-21-027816 | Feb 25, 2021 | — |
| 8-K | FORM 8-K | 0001104659-20-121579 | Nov 5, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-091143 | Aug 6, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-072083 | Jun 10, 2020 | Jun 9, 2020 |
| 8-K | FORM 8-K | 0001104659-20-071481 | Jun 9, 2020 | Jun 3, 2020 |
| 8-K | FORM 8-K | 0001104659-20-063381 | May 19, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-063803 | May 19, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-059410 | May 11, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-058898 | May 8, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-057718 | May 7, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-057358 | May 6, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-035077 | Mar 18, 2020 | Mar 17, 2020 |
| 8-K | FORM 8-K | 0001104659-20-027561 | Mar 2, 2020 | Feb 28, 2020 |
| 8-K | FORM 8-K | 0001104659-20-025683 | Feb 27, 2020 | — |
| 8-K | FORM 8-K | 0001104659-20-022779 | Feb 19, 2020 | Feb 14, 2020 |
| 8-K | FORM 8-K | 0001104659-19-060824 | Nov 7, 2019 | Nov 4, 2019 |
| 8-K | FORM 8-K | 0001410578-19-000719 | Aug 8, 2019 | — |
| 8-K | 8-K | 0001104659-19-037448 | Jun 25, 2019 | — |
| 8-K | 8-K | 0001104659-19-036677 | Jun 20, 2019 | — |
| 8-K | 8-K | 0001104659-19-036088 | Jun 18, 2019 | — |
| 8-K | 8-K | 0001104659-19-026210 | May 2, 2019 | — |
| 8-K | 8-K | 0001104659-19-026078 | May 1, 2019 | — |
| 8-K | 8-K | 0001104659-19-009721 | Feb 21, 2019 | — |
| 8-K | 8-K | 0001104659-18-065264 | Nov 1, 2018 | — |
| 8-K | 8-K | 0001104659-18-056895 | Sep 14, 2018 | — |
| 8-K | 8-K | 0001104659-18-055948 | Sep 10, 2018 | — |
| 8-K | 8-K | 0001104659-18-052830 | Aug 20, 2018 | — |
| 8-K | 8-K | 0001104659-18-052021 | Aug 15, 2018 | Aug 14, 2018 |
| 8-K | 8-K | 0001104659-18-051773 | Aug 14, 2018 | — |
| 8-K | 8-K | 0001104659-18-048972 | Aug 2, 2018 | — |
| 8-K | 8-K | 0001104659-18-030047 | May 3, 2018 | — |
| 8-K | 8-K | 0001104659-18-029854 | May 2, 2018 | — |
| 8-K | 8-K | 0001104659-18-011205 | Feb 22, 2018 | — |
| 8-K | LIVE FILING | 0001299933-17-001178 | Nov 20, 2017 | Nov 17, 2017 |
| 8-K | 8-K | 0001104659-17-065370 | Nov 2, 2017 | — |
| 8-K | 8-K | 0001104659-17-049112 | Aug 3, 2017 | — |