Non-Executive Chairman of the Board of Directors of Rochester Resources Ltd., a junior natural resources company with assets in Mexico, since March 2018 (and various roles with the company prior to that time); Lead Director of Vizsla Silver Corp., a junior natural resources company with assets in Mexico, since September 2025, and a Director since November 2023; Former member of the Board of Directors of Wheaton Precious Metals Corp., a precious metals streaming company, from June 2004 to May 2023; Chairman of the Board of Directors from 2004 to 2009; interim Chief Executive Officer from October 2004 to April 2006; and Executive Vice President from 2002 to 2005; Former member of the Board of Directors of DynaResource, Inc., an exploration stage precious metals company, and special advisor to the president of its wholly-owned Mexican subsidiary, from March 2017 to January 2020; Chairman of the Advisory Board of the Faculty of Mines at the University of Guanajuato; Director of Minas de Bac s, a private mining company with operations in Mexico, since 2018 and director of Avantti Medi Clear, a private company, since 2010; Former member of the Board of Directors of Primero Mining Corp., a precious metals mining company, from 2008 to 2016, while also holding several senior management roles during that period, including Executive Vice President and President (Mexico), and President and Chief Operating Officer; Executive Vice President of Goldcorp Inc. from March 2005 to September 2007; President of Luismin, S.A. de C.V. from 1991 to 2007; earned a Bachelor of Science in Mining Engineering from Universidad de Guanajuato, a Master of Business Administration from Instituto Tecnologico de Estudios Superiores de Monterrey, and an Advanced Management Degree from Harvard University.