BlackRock, Inc. - 31 Dec 2025 SCHEDULE 13G/A Report for COGENT COMMUNICATIONS HOLDINGS, INC. Common Stock (CCOI)

Filing Manager: BlackRock, Inc.
Reporting Manager: BlackRock, Inc.
Security: COGENT COMMUNICATIONS HOLDINGS, INC. Common Stock
Symbol: CCOI
Shares outstanding: 49,086,090 shares
Disclosed Ownership: 7,068,397 shares
Ownership: 14%
Form type: SCHEDULE 13G/A
Filing time: 23 Jan 2026, 10:57:25 UTC
Date of event: 31 Dec 2025
Previous filing: 18 Jul 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
BlackRock, Inc.	14%	7,068,397	6,977,171	0	Spencer Fleming	Managing Director