CCOI Form 144: Proposed common stock sales

CCOI: A reporting person submitted a Form 144 indicating proposed sales of common stock with broker RBC DOMINION SECURITIES INC.

Accepted by SEC EDGAR 03/05/2026 - 04:19 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

CCOI: A reporting person submitted a Form 144 indicating proposed sales of common stock with broker RBC DOMINION SECURITIES INC. (181 Bay St, Toronto) on NASDAQ. The filing lists planned issuer stock items of 930, 1,254, and 1,116 shares tied to director compensation on 10/01/2024, 01/01/2025, and 04/01/2025, respectively, and shows a filing reference date of 03/05/2026.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the CCOI Form 144 disclose about proposed sales?

It notifies proposed sales of common stock by an affiliate via Form 144. The filing lists broker RBC DOMINION SECURITIES INC., a NASDAQ listing, and three issuer stock items of 930, 1,254, and 1,116 shares tied to director compensation.

Who is the broker listed on the CCOI Form 144?

RBC DOMINION SECURITIES INC. is the listed broker. The filing gives the broker address as 181 Bay St Suite 2200, Toronto, and associates the transaction record with NASDAQ on the form.

What share amounts and dates are listed in the CCOI filing?

The filing lists three issuer stock items: 930, 1,254, and 1,116 shares. Those items are dated 10/01/2024, 01/01/2025, and 04/01/2025, each described as director compensation.

Does the Form 144 state when it was filed for CCOI?

The form shows a filing reference date of 03/05/2026. That date appears alongside other filing identifiers and the NASDAQ designation in the provided content.

Are cash proceeds or sale prices disclosed in the CCOI Form 144?

No sale prices or proceeds are provided in the excerpt. The content lists share counts, dates, broker details, and NASDAQ, but includes no dollar amounts or aggregate offering price.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001790695
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	COGENT COMMUNICATIONS HOLDINGS, INC.
SEC File Number	000-51829
Address of Issuer	2450 N ST NW 4TH FLOOR WASHINGTON DISTRICT OF COLUMBIA 20037
Phone	2022954274
Name of Person for Whose Account the Securities are To Be Sold	Sheryl Lynn Kennedy
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
common stock	RBC DOMINION SECURITIES INC. 181 Bay St Suite 2200 Toronto A6 M5J 2T3	3300	75600	50062158	03/05/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
common stock	04/01/2025	Director Compensation	Issuer			1116	04/01/2025	None
common stock	01/01/2025	Director Compensation	Issuer			1254	01/01/2025	None
common stock	10/01/2024	Director Compensation	Issuer			930	10/01/2024	None

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	03/05/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Sheryl Lynn Kennedy
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)