Lewis H FERGUSON plan to sell securities of COGENT COMMUNICATIONS HOLDINGS, INC. under Form 144

Lewis H FERGUSON filed Form 144 to notify SEC of plan to sell 2800 units of COGENT COMMUNICATIONS HOLDINGS, INC. securities around 2026-05-28, with aggregate market value of $57,008.00. The total outstanding units is 50077663.0. The amount planned to be sold represents 0.01% of total outstanding units; Recent transactions in past 3 months include: On 03/05/2026, sold 2206 units for $50804.18;