John B. Chang - 31 Dec 2025 Form 4 Insider Report for COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI)

Role
VP & CHIEF LEGAL OFFICER
Signature
/s/ John Chang
Issuer symbol
CCOI
Transactions as of
31 Dec 2025
Net transactions value
$0
Form type
4
Filing time
05 Jan 2026, 16:26:30 UTC
Previous filing
02 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Chang John B. VP & CHIEF LEGAL OFFICER 2450 N ST NW, 4TH FLOOR, WASHINGTON /s/ John Chang 05 Jan 2026 0001775672

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CCOI common stock Award $0 +9,600 +12% $0.000000 88,847 31 Dec 2025 Direct F1
transaction CCOI common stock Award $0 +100,000 +113% $0.000000 188,847 31 Dec 2025 Direct F2
holding CCOI common stock 1,870 31 Dec 2025 By minor children
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The award of restricted stock shall vest in one third of the grant on January 1 of each of 2027, 2028 and 2029.
F2 The award shall vest effective January 1, 2029, based on Mr. Chang's continued employment to that date.