0001158324 2026-04-30 2026-04-30 0001158324 1 2026-04-30 2026-04-30 iso4217:USD pure shares S-8 S-8 EX-FILING FEES 0001158324 COGENT COMMUNICATIONS HOLDINGS, INC. N/A false S-8 COGENT COMMUNICATIONS HOLDINGS, INC. Equity Common Stock, par value $0.001 per share true 1800000 24.36 43848000.00 0.0001381 6055.41 43848000.00 6055.41 0.00 6055.41 Pursuant to Rule 416(a) of the Securities Act of 1933, as amended (the "Securities Act"), this Registration Statement also covers an indeterminate number of shares of common stock of Cogent Communications Holdings, Inc., par value $0.001 per share (the "Common Stock"), that may be offered or issued under the Third Amended and Restated Cogent Communications Holdings, Inc. 2017 Incentive Award Plan as a result of a stock split, stock dividend or similar transaction. Estimated solely for purposes of calculating the registration fee pursuant to Rules 457(h) and (c) of the Securities Act. The proposed maximum offering price per share, proposed maximum aggregate offering price and the amount of the registration fee are based on the average of the high and low prices per share for the Common Stock as reported on the Nasdaq Global Select Market on April 28, 2026.