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Mailing Address 2450 N STREET, NW WASHINGTON DC 20037
Business Address 2450 N STREET, NW WASHINGTON DC 20037 2022954200
COGENT COMMUNICATIONS HOLDINGS, INC. CIK#: 0001158324 (see all company filings)

SIC: 4899 - COMMUNICATION SERVICES, NEC
State location: DC | State of Inc.: DE | Fiscal Year End: 1231
formerly: COGENT COMMUNICATIONS GROUP INC (filings through 2014-06-26)
(CF Office: 06 Technology)
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Items 1 - 40  0001158324 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
ARS  Documents Annual Report to Security Holders
Acc-no: 0001104659-24-038435 (34 Act)  Size: 1 MB
2024-03-25 000-51829
24779157
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001104659-24-038424 (34 Act)  Size: 4 MB
2024-03-25 000-51829
24779116
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001410578-24-000091 (34 Act)  Size: 12 MB
2024-02-29 000-51829
24700514
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-24-029043 (34 Act)  Size: 1 MB
2024-02-29 000-51829
24698808
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-24-020638 (34 Act)  Size: 13 KB
2024-02-13 005-78106
24627929
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0000945621-24-000130 (34 Act)  Size: 139 KB
2024-01-26 005-78106
24566807
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001086364-24-001057 (34 Act)  Size: 13 KB
2024-01-22 005-78106
24548690
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001104659-24-001889 (34 Act)  Size: 255 KB
2024-01-05 000-51829
24517478
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001410578-23-002293 (34 Act)  Size: 10 MB
2023-11-09 000-51829
231392198
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-23-115992 (34 Act)  Size: 870 KB
2023-11-09 000-51829
231390056
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001104659-23-096576 (34 Act)  Size: 192 KB
2023-08-29 000-51829
231222518
8-K/A  Documents   Interactive Data [Amend] Current report, items 2.02 and 9.01
Acc-no: 0001104659-23-089811 (34 Act)  Size: 868 KB
2023-08-10 000-51829
231159756
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-23-089550 (34 Act)  Size: 865 KB
2023-08-10 000-51829
231157162
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001410578-23-001625 (34 Act)  Size: 10 MB
2023-08-09 000-51829
231155107
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0001104659-23-084424 (34 Act)  Size: 229 KB
2023-07-27 000-51829
231114753
8-K/A  Documents   Interactive Data [Amend] Current report, item 9.01
Acc-no: 0001104659-23-081600 (34 Act)  Size: 850 KB
2023-07-17 000-51829
231091587
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001104659-23-059714 (33 Act)  Size: 69 KB
2023-05-12 333-271876
23915604
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001104659-23-056399 (34 Act)  Size: 6 MB
2023-05-05 000-51829
23892266
8-K  Documents   Interactive Data Current report, items 5.02, 5.07, and 9.01
Acc-no: 0001104659-23-055930 (34 Act)  Size: 231 KB
2023-05-04 000-51829
23887915
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-23-055777 (34 Act)  Size: 827 KB
2023-05-04 000-51829
23886461
8-K  Documents   Interactive Data Current report, items 1.01, 2.01, 7.01, and 9.01
Acc-no: 0001104659-23-053639 (34 Act)  Size: 662 KB
2023-05-01 000-51829
23870405
ARS  Documents Annual Report to Security Holders
Acc-no: 0001104659-23-032764 (34 Act)  Size: 1 MB
2023-03-15 000-51829
23735155
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001104659-23-032758 (34 Act)  Size: 7 MB
2023-03-15 000-51829
23735073
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001104659-23-025123 (34 Act)  Size: 10 MB
2023-02-24 000-51829
23663389
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-23-024515 (34 Act)  Size: 1 MB
2023-02-23 000-51829
23655910
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-23-015660 (34 Act)  Size: 13 KB
2023-02-09 005-78106
23602818
SC 13G  Documents Statement of acquisition of beneficial ownership by individuals
Acc-no: 0000945621-23-000047 (34 Act)  Size: 139 KB
2023-02-03 005-78106
23587375
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001306550-23-004536 (34 Act)  Size: 13 KB
2023-01-30 005-78106
23565583
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0001104659-23-002962 (34 Act)  Size: 449 KB
2023-01-11 000-51829
23522768
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001104659-23-001738 (34 Act)  Size: 228 KB
2023-01-06 000-51829
23513970
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001104659-22-114768 (34 Act)  Size: 8 MB
2022-11-04 000-51829
221360880
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-22-114210 (34 Act)  Size: 969 KB
2022-11-03 000-51829
221356218
8-K  Documents   Interactive Data Current report, items 1.01, 7.01, and 9.01
Acc-no: 0001104659-22-098038 (34 Act)  Size: 1 MB
2022-09-07 000-51829
221229909
8-K/A  Documents   Interactive Data [Amend] Current report, item 5.02
Acc-no: 0001104659-22-086797 (34 Act)  Size: 193 KB
2022-08-08 000-51829
221141976
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001104659-22-086522 (34 Act)  Size: 8 MB
2022-08-05 000-51829
221139008
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-22-086137 (34 Act)  Size: 798 KB
2022-08-04 000-51829
221136767
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001104659-22-074787 (34 Act)  Size: 197 KB
2022-06-27 000-51829
221045105
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, and 9.01
Acc-no: 0001104659-22-073480 (34 Act)  Size: 1 MB
2022-06-22 000-51829
221032054
8-K  Documents   Interactive Data Current report, item 7.01
Acc-no: 0001104659-22-069025 (34 Act)  Size: 203 KB
2022-06-07 000-51829
221001933
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001104659-22-068349 (34 Act)  Size: 228 KB
2022-06-06 000-51829
22996836