[Form 4] Cogent Communications Holdings, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Sheryl Lynn Kennedy, a director of Cogent Communications Holdings, Inc. (CCOI), reported the sale of common stock. On 08/21/2025 she disposed of 2,000 shares at a price of $36.35 per share, leaving her with 10,017 shares beneficially owned. The filing is a single-person Form 4 reporting a non-derivative sale; no derivative transactions or additional explanations were included.

Positive

• Clear disclosure of transaction date, number of shares sold, sale price, and post-transaction holdings
• Form signed by the reporting person, meeting filing formalities

Negative

• No explanation provided for the sale (no 10b5-1 plan indicated)
• Single transaction only; no additional context for investor assessment

Insights

Corporate Governance Expert

TL;DR: Director Sheryl Kennedy sold 2,000 CCOI shares, reducing her stake to 10,017 shares.

The Form 4 discloses a straightforward open-market sale of 2,000 common shares at $36.35 on 08/21/2025 by a company director. The report lists no derivative activity and provides no explanation for the sale. As filed by one reporting person, it documents a routine insider disposition rather than a complex transaction.

Securities Analyst

TL;DR: Insider sale recorded; transaction appears routine and limited in scale.

The disclosure shows a non-derivative sale reducing beneficial ownership to 10,017 shares. The form includes standard signatures and regulatory notices but no further context such as a trading plan. Transaction and post-transaction holdings are clearly stated.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Kennedy Sheryl Lynn

(Last) (First) (Middle)

2450 N ST NW

4TH FLOOR

(Street)

WASHINGTON DC 20037

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
COGENT COMMUNICATIONS HOLDINGS, INC. [ CCOI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/21/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
common stock	08/21/2025		S		2,000	D	$36.35	10,017	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Sheryl Kennedy	08/21/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Sheryl Kennedy report in the Form 4 for CCOI?

The form reports a sale of 2,000 common shares of Cogent Communications (CCOI) on 08/21/2025 at $36.35 per share, leaving her with 10,017 shares.

Was the Form 4 filed jointly or by one person?

The filing indicates it was a Form filed by One Reporting Person.

Did the Form 4 disclose any derivative transactions for CCOI?

No. Table II for derivative securities contains no entries in this filing.

Does the filing state the reporting person is an officer or director of CCOI?

Yes. The form marks the reporting person as a Director of Cogent Communications Holdings, Inc.

Is there any indication the sale was under a 10b5-1 trading plan?

No. The filing does not indicate a transaction pursuant to a 10b5-1 plan.