KILMER HENRY W plan to sell securities of COGENT COMMUNICATIONS HOLDINGS, INC. under Form 144

KILMER HENRY W filed Form 144 to notify SEC of plan to sell 2400 units of COGENT COMMUNICATIONS HOLDINGS, INC. securities around 2026-06-09, with aggregate market value of $42,125.00. The total outstanding units is 50077663.0. The amount planned to be sold represents 0.00% of total outstanding units;