CCOI Rule 144: 3,300 Shares Sold for $75,600

CCOI filed a Rule 144 notice reporting planned/rescheduled sales of common stock and a recent transaction.

Accepted by SEC EDGAR 05/18/2026 - 04:10 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

CCOI filed a Rule 144 notice reporting planned/rescheduled sales of common stock and a recent transaction. The filing lists planned director compensation share sales of 236 shares (04/01/2025), 1,968 shares (07/01/2025) and 1,096 shares (10/01/2025). It also shows 3,300 shares sold on 03/05/2026 for $75,600 through RBC Dominion Securities on NASDAQ.

Key Figures

Form type: Form 144 Sale reported: 3,300 shares Proceeds reported: $75,600 +3 more

6 metrics

Form type Form 144 Rule 144 notice for proposed/covered sales

Sale reported 3,300 shares sold on 03/05/2026

Proceeds reported $75,600 proceeds from 3,300-share sale on 03/05/2026

Planned sale (Apr 2025) 236 shares Director Compensation dated 04/01/2025

Planned sale (Jul 2025) 1,968 shares Director Compensation dated 07/01/2025

Planned sale (Oct 2025) 1,096 shares Director Compensation dated 10/01/2025

Key Terms

Director Compensation, Issuer, RBC Dominion Securities

3 terms

Director Compensation regulatory

"common stock | 04/01/2025 | Director Compensation"

Issuer regulatory

"Director Compensation | Issuer"

RBC Dominion Securities financial

"RBC DOMINION SECURITIES INC. 181 Bay St Suite 2200 Toronto"

FAQ

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

What does the CCOI Form 144 disclose about recent sales?

It reports a sale of 3,300 shares on 03/05/2026 for $75,600. The entry shows the trade was effected through RBC Dominion Securities and listed the securities as common stock on NASDAQ.

Which planned director compensation share sales does the CCOI filing list?

Planned director compensation sales are 236; 1,968; and 1,096 shares. The filing ties those amounts to 04/01/2025, 07/01/2025, and 10/01/2025 respectively and labels the counterparty as the Issuer.

Through which broker-dealer were the shares sold in the CCOI filing?

The filing shows RBC Dominion Securities, 181 Bay St, Toronto, as the broker-dealer. The sale of 3,300 shares on 03/05/2026 is recorded with that broker and the listing noted is NASDAQ.

Does the Form 144 indicate who receives proceeds from planned sales?

The filing labels the planned 2025 share entries as related to Director Compensation and lists the counterparty as "Issuer." It does not state any further recipients or uses of proceeds in the provided excerpt.

What security and listing does the CCOI Form 144 reference?

The filing references common stock listed on NASDAQ. Each listed sale or planned sale in the excerpt is described as common stock with transactions processed through the named broker-dealer.

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	53367.31	50077663	05/14/2026	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			236	04/01/2025	None
common stock	07/01/2025	Director Compensation	Issuer			1968	07/01/2025	None
common stock	10/01/2025	Director Compensation	Issuer			1096	10/01/2025	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
RBC DOMINION SECURITIES INC. 181 Bay St Suite 2200 Toronto A6 M5J 2T3	common stock	03/05/2026	3300	75600

144: Remarks and Signature

Remarks
Date of Notice	05/18/2026
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)