Stephen DeFalco
President and Chief Executive Officer, MDS Inc.

Stephen DeFalco was appointed President and CEO of MDS Inc., and to the MDS Board of Directors, effective July 1, 2005.

Stephen joined MDS as Chief Operating Officer from U.S. Genomics where he was Chairman and CEO. Prior to his role at U.S. Genomics, he served as President of PerkinElmer Instruments and Senior Vice-President of PerkinElmer Inc. His execution of a Six Sigma operational improvement program at the company was recognized with the Today’s Chemist at Work Award for Quality in 2001 and the Award for Technical Innovation in 2002.

Stephen has held senior management positions at United Technologies and McKinsey & Company in their high tech sector. He has also led product development teams at IBM.

John Mayberry
Chairman, MDS Inc.

John Mayberry became Chairman of the MDS Inc. Board in November 2004. He retired in 2003 as Chairman of the board and CEO of Dofasco Inc. He also serves on the board of Scotiabank.