DAVE SCHAEFFER - 08 Aug 2025 Form 4 Insider Report for COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI)

Role: CHAIRMAN, CEO, AND PRESIDENT, Director
Signature: /s/ David Schaeffer
Issuer symbol: CCOI
Transactions as of: 08 Aug 2025
Net transactions value: -$22,519,998
Form type: 4
Filing time: 11 Aug 2025, 17:11:55 UTC
Previous filing: 08 Aug 2025
Next filing: 05 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
SCHAEFFER DAVE	CHAIRMAN, CEO, AND PRESIDENT, Director	2450 N ST NW, 4TH FLOOR, WASHINGTON	/s/ David Schaeffer	11 Aug 2025	0001166976

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CCOI	common stock	Sale	$22,519,998	-818,909	-54%	$27.50	697,143	08 Aug 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The sales reported on this Form 4 represent a non-volitional transfer of Common Stock by the Reporting Person to one of the Reporting Person's lenders effectuated by the lender pursuant to the Reporting Person's margin loan facility. The lender then sold the Common Stock in a private block sale at an approximately 9% discount to the then market price.