4processed

Form 4 — Insider Transaction

COGENT COMMUNICATIONS HOLDINGS, INC.(CCOI)

Filing Date

June 30, 2026

Accepted

June 30, 2026

Accession No.

0001790695-26-000014

CIK

0001158324

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Kennedy Sheryl LynnOther3.4K$013.7Kcommon stockJun 30, 2026