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

Filing Manager: Turtle Creek Asset Management Inc.
Reporting Manager: Turtle Creek Asset Management Inc.
Security: COGENT COMMUNICATIONS HOLDINGS, INC. Common Stock
Symbol: CCOI
Shares outstanding: 49,229,841 shares
Disclosed Ownership: 4,036,847 shares
Ownership: 8.2%
Form type: SCHEDULE 13G/A
Filing time: 17 Feb 2026, 16:26:57 UTC
Date of event: 31 Dec 2025
Previous filing: 14 Nov 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Turtle Creek Asset Management Inc.	8.2%	4,036,847	4,036,847	0	/s/ Meaghan Einav	Meaghan Einav, Chief Compliance Officer