Constellation Software Inc.

Mr. McKinnon joined our board in March 2006. He currently provides consulting services to technology company executives covering a broad range of management and leadership topics. Most recently he was President and Chief Executive Officer of TSX listed Certicom Corporation from 2002 to 2007. Prior to that he was President and Chief Executive Officer for two privately owned software companies from 2000 to 2002. From 1995 to 2000 he held the position of President and Chief Executive Officer at TSX listed Promis Systems Corporation where he received the Ernst and Young Entrepreneur of the Year award in 1998. Previously Mr. McKinnon was with Digital Equipment Corporation from 1981 to 1994 in various sales and senior management positions in both Canada and Singapore. He holds an Honours BA from McMaster University and attended the INSEAD Advanced Management Program.