| Name | Relationship | Address | Signature | Signature date | CIK | 
|---|---|---|---|---|---|
| Kennedy Sheryl Lynn | Director | 2450 N ST NW, 4TH FLOOR, WASHINGTON | /s/ Sheryl Kennedy | 2025-10-01 | 0001790695 | 
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CCOI | common stock | Award | $0 | +2.4K | +23.91% | $0.00 | 12.4K | Sep 30, 2025 | Direct | F1 | 
| Id | Content | 
|---|---|
| F1 | The shares of common stock reported reflects a quarterly payment to directors for Q3 2025 service. All shares are owned directly by Ms. Kennedy, a director of Cogent Communications Holdings, Inc. |