X0306 4 2018-09-13 0000909494 TUCOWS INC /PA/ TCX 0001301100 Woroch David John 96 MOWAT AVENUE TORONTO A6 M6K 3M1 ONTARIO, CANADA 1 EVP Wholesale Common stock 2018-09-13 4 S 0 3521 55.60360 D 64351 D Common stock 2018-09-13 4 S 0 1979 55.5279 D 62372 D Common stock 54984 I Per Dave Woroch RRSP Common stock 10750 I Per S. Dagelman, Spouse RRSP The sale price reported in Column 4 is a weighted average. The sale of 3,521 shares were sold in multiple transactions at prices ranging from $55.60 to $55.65. The sale of 1,979 shares were sold in multiple transactions at prices ranging from $55.50 to $55.55.The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote. /s/ David John Woroch 2018-09-14