Turtle Creek Asset Management Inc. - 30 Sep 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: 48,978,011 shares
Disclosed Ownership: 4,603,933 shares
Ownership: 9.4%
Form type: SCHEDULE 13G/A
Filing time: 14 Nov 2025, 16:50:24 UTC
Date of event: 30 Sep 2025
Previous filing: 14 Aug 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.	9.4%	4,603,933	4,603,933	0	/s/ Meaghan Einav	Meaghan Einav, Chief Compliance Officer