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
S-8  Documents   Interactive Data Securities to be offered to employees in employee benefit plans
Acc-no: 0001104659-25-046037 (33 Act)  Size: 196 KB
2025-05-08 333-287069
25925403
8-K  Documents   Interactive Data Current report, items 5.02, 5.03, 5.07, and 9.01
Acc-no: 0001104659-25-046003 (34 Act)  Size: 348 KB
2025-05-08 000-51829
25924902
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001410578-25-001105 (34 Act)  Size: 8 MB
2025-05-08 000-51829
25924823
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-25-045878 (34 Act)  Size: 828 KB
2025-05-08 000-51829
25923850
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, and 9.01
Acc-no: 0001104659-25-034257 (34 Act)  Size: 1 MB
2025-04-11 000-51829
25832728
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001104659-25-032266 (34 Act)  Size: 218 KB
2025-04-04 000-51829
25815693
ARS  Documents Annual Report to Security Holders
Acc-no: 0001104659-25-028219 (34 Act)  Size: 1 MB
2025-03-26 000-51829
25773084
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001104659-25-028214 (34 Act)  Size: 5 MB
2025-03-26 000-51829
25773049
PRE 14A  Documents   Interactive Data Other preliminary proxy statements
Acc-no: 0001104659-25-023338 (34 Act)  Size: 5 MB
2025-03-13 000-51829
25734704
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0001104659-25-022963 (34 Act)  Size: 217 KB
2025-03-12 000-51829
25731638
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001410578-25-000226 (34 Act)  Size: 13 MB
2025-02-28 000-51829
25683744
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-25-017789 (34 Act)  Size: 1 MB
2025-02-27 000-51829
25673026
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001104659-25-003746 (34 Act)  Size: 258 KB
2025-01-15 000-51829
25532895
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0002012383-24-003382 (34 Act)  Size: 13 KB
2024-11-08 005-78106
241439526
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001410578-24-001788 (34 Act)  Size: 11 MB
2024-11-07 000-51829
241434218
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-24-115061 (34 Act)  Size: 1 MB
2024-11-07 000-51829
241433168
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0002012383-24-001851 (34 Act)  Size: 13 KB
2024-10-23 005-78106
241389844
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001410578-24-001206 (34 Act)  Size: 11 MB
2024-08-08 000-51829
241186999
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-24-087003 (34 Act)  Size: 952 KB
2024-08-08 000-51829
241186027
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, and 9.01
Acc-no: 0001104659-24-070425 (34 Act)  Size: 1 MB
2024-06-11 000-51829
241036283
8-K  Documents   Interactive Data Current report, item 7.01
Acc-no: 0001104659-24-069113 (34 Act)  Size: 205 KB
2024-06-06 000-51829
241025977
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001104659-24-068515 (34 Act)  Size: 301 KB
2024-06-05 000-51829
241020761
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001410578-24-000677 (34 Act)  Size: 8 MB
2024-05-09 000-51829
24929491
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001104659-24-059108 (34 Act)  Size: 788 KB
2024-05-09 000-51829
24928546
8-K  Documents   Interactive Data Current report, items 5.07 and 9.01
Acc-no: 0001104659-24-058652 (34 Act)  Size: 211 KB
2024-05-08 000-51829
24925757
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, and 9.01
Acc-no: 0001104659-24-057099 (34 Act)  Size: 1 MB
2024-05-06 000-51829
24914935
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001104659-24-051723 (34 Act)  Size: 219 KB
2024-04-25 000-51829
24873464
8-K  Documents   Interactive Data Current report, item 7.01
Acc-no: 0001104659-24-048968 (34 Act)  Size: 206 KB
2024-04-19 000-51829
24855353
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 Beneficial Ownership by Certain Investors
Acc-no: 0001104659-24-020638 (34 Act)  Size: 13 KB
2024-02-13 005-78106
24627929
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000945621-24-000130 (34 Act)  Size: 139 KB
2024-01-26 005-78106
24566807
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
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