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BlackRock, Inc. has updated its ownership disclosure for Cogent Communications Holdings, Inc. common stock. As of 12/31/2025, BlackRock reports beneficial ownership of 7,068,397 shares, representing 14.4% of Cogent’s outstanding common stock. BlackRock has sole voting power over 6,977,171 of these shares and sole dispositive power over the full 7,068,397 shares, with no shared voting or dispositive power reported.
The filing notes that these holdings reflect positions of certain BlackRock business units, and that other BlackRock units with disaggregated reporting are not included. It also highlights that iShares Core S&P Small-Cap ETF holds more than five percent of Cogent’s outstanding common stock. BlackRock certifies that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Cogent.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many CCOI shares does BlackRock report owning in this Schedule 13G/A?
BlackRock, Inc. reports beneficial ownership of 7,068,397 shares of Cogent Communications Holdings, Inc. common stock as of 12/31/2025.
What percentage of Cogent Communications (CCOI) does BlackRock’s stake represent?
BlackRock states that its beneficial ownership of 7,068,397 shares represents 14.4% of Cogent Communications Holdings, Inc.’s outstanding common stock.
What voting and dispositive power does BlackRock report over CCOI shares?
BlackRock reports sole voting power over 6,977,171 shares, sole dispositive power over 7,068,397 shares, and no shared voting or dispositive power.
Which BlackRock vehicle holds more than 5% of CCOI’s common stock?
The filing states that iShares Core S&P Small-Cap ETF has an interest in Cogent Communications Holdings, Inc. common stock that is more than five percent of the total outstanding shares.
Why did BlackRock file this Schedule 13G/A for CCOI?
BlackRock filed this Schedule 13G/A to report its beneficial ownership of Cogent Communications Holdings, Inc. common stock as of 12/31/2025, stating that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.
Does BlackRock indicate any intent to influence control of Cogent Communications?
No. BlackRock certifies that the CCOI securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Cogent Communications Holdings, Inc.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 17)
COGENT COMMUNICATIONS HOLDINGS, INC.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
19239V302
(CUSIP Number)
12/31/2025
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
SCHEDULE 13G
CUSIP No.
19239V302
1
Names of Reporting Persons
BlackRock, Inc.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
6,977,171.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
7,068,397.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
7,068,397.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
14.4 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
COGENT COMMUNICATIONS HOLDINGS, INC.
(b)
Address of issuer's principal executive offices:
2450 N STREET, NW, WASHINGTON, DISTRICT OF COLUMBIA, 20037
Item 2.
(a)
Name of person filing:
BlackRock, Inc.
In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)
Address or principal business office or, if none, residence:
BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)
Citizenship:
See Item 4 of Cover Page
(d)
Title of class of securities:
Common Stock
(e)
CUSIP No.:
19239V302
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
7,068,397
(b)
Percent of class:
14.4%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
6,977,171
(ii) Shared power to vote or to direct the vote:
0
(iii) Sole power to dispose or to direct the disposition of:
7,068,397
(iv) Shared power to dispose or to direct the disposition of:
0
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
The interest of 1 such person, iShares Core S&P Small-Cap ETF, in the common stock of COGENT COMMUNICATIONS HOLDINGS, INC. is more than five percent of the total outstanding common stock.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See Exhibit 99
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
