Founder of Wheaton Precious Metals Corp. and RespiVert Ltd., Peter Derek Barnes presently holds the position of Chairman of MAG Silver Corp.

He is also Member of Chartered Professional Accountants of Canada.

In his past career he was Chief Executive Director at Wheaton Precious Metals Corp., Non-Executive Chairman at Red Eagle Exploration Ltd., Chief Financial Officer & Executive Vice President for Goldcorp, Inc., Chief Financial Officer & Executive Vice President for Wheaton River Minerals Ltd. and Member of Institute of Corporate Directors.

Peter Derek Barnes received an undergraduate degree from The University of Hull.