Appointed to the Board: October 2018
Nationality: United States
Committee membership: Audit Committee1; Nomination & Corporate Governance Committee; Safety, Environment & Social Responsibility Committee
Skills and experience: Mary is Chairman, Chief Executive Officer and President of Johns Manville Corporation, a Berkshire Hathaway company, which is a leading global manufacturer of premium-quality building products and engineered specialty materials. Over nearly 40 years with Johns Manville she has held a wide range of global leadership roles, encompassing responsibility for business management and strategic business development. and was also Chief Financial Officer. Mary was until recently a non-executive Director of Ply Gem Holdings Inc., a leader in exterior building products in North America and Lead Director
of CoBiz Financial Inc.
Qualifications: Bachelor's degree in Finance from the University of Colorado; MBA from University of Denver.
External Appointments: Listed: Not applicable. Non-listed: Chairman, Chief Executive Officer and President of Johns Manville Corporation and member of the Board of Trustees of the University of Denver.
1 Audit Committee Financial Expert as determined by the Board.