X0306 4 2017-03-07 0 0000909494 TUCOWS INC /PA/ TCX 0001368565 Ralls Rawleigh Hazen IV 96 MOWAT AVENUE TORONTO A6 M6K 3M1 ONTARIO, CANADA 1 0 0 0 Common Stock 2017-03-07 4 S 0 7778 47.5568 D 171669 D Common Stock 2017-03-08 4 S 0 16690 46.9595 D 154979 D Common Stock 2017-03-08 4 S 0 4282 47.6943 D 150697 D Common Stock 2017-03-09 4 S 0 11250 46.5279 D 45000 I Rawleigh Ralls IRA Common Stock 40000 I Kate Ralls, spouse Common Stock 6250 I Kate Ralls IRA The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.20 to $48.10, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.50 to $47.50, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.55 to $47.90, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.35 to $46.80, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote. /s/ Laura M. Medina, Attorney-in-Fact 2017-03-09