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Leadership Team

Christopher R. Griffin
President and
Chief Executive Officer

Christopher Griffin is a proven thought leader with more than 35 years’ experience in the construction and building materials industries. He began his career as a drywall installer with a small, family owned company, and now, as CEO of USG, he leads the company’s overall strategy to accelerate growth, improve customer-centricity and achieve operational excellence. Griffin is a member of the Board of Directors of Chicagoland Habitat for Humanity and Make-A-Wish Illinois. 

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Joseph W. Holmes
Senior Vice President |
President, Gypsum Division

Joe Holmes leads the Gypsum division, with responsibility for USG’s drywall and surfaces products. He is a seasoned leader with 35 years’ experience in USG’s manufacturing, technology and operations organizations. Holmes is a proud alumnus of the University of Texas and a sought-after speaker on digital innovation and the future of manufacturing.

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Christopher Macey
Senior Vice President |
President, Ceilings Division

Chris Macey leads the Ceilings division, with responsibility for USG’s growing portfolio of ceilings products. He joined USG in 2006 and has held leadership roles in the company’s Canadian, Mexican and Latin American businesses, as well as the Ceilings division. Macey is also a youth hockey coach in Ontario, Canada and has lent his expertise to The Home Depot Canada’s Advisory Committee for The Home Depot Foundation.

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Steven P. Bjorklund
Senior Vice President | President, Performance Materials Division

Steve Bjorklund leads the Performance Materials division, with responsibility for the USG products and solutions that simplify work and speed up the construction process. Over his 31 years with USG, Bjorklund has led a wide variety of teams across finance, customer service and technology organizations. Bjorklund gives back to his community by volunteering at community shelters and with organizations like Feed My Starving Children and the Adventure Guides Boys & Girls Program.

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Stephanie Holdt
Senior Vice President |
Chief Financial Officer, Treasurer

Stephanie Holdt is chief financial officer and senior vice president of USG Corporation. In this role, Holdt is responsible for the strategy and vision of USG’s corporate finance, accounting and treasury functions.

Holdt is a member of the International Controller Association and supports a variety of philanthropic causes.

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John Reale
Senior Vice President |
Chief Customer Officer

John Reale is responsible for creating an outstanding experience for USG’s customers, from product marketing to customer service. Reale’s USG career began 34 years ago as an accountant in a manufacturing plant, growing into leadership roles in the finance, sales, customer service, technology and marketing organizations. Reale is active in his community and has served as a member of the Mayor’s Technology Council of Chicago and the CISCO Manufacturing Advisory Council.

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Srinivas Veeramasuneni
Senior Vice President |
Chief Technology Officer

Dr. Srinivas Veeramasuneni is responsible USG’s technology vision, strategy, and investment, driving the company’s competitive advantage and profitability through collaboration, technology, and customer-centric innovation. Dr. Veeramasuneni holds 12 U.S. patents, has published nearly 25 papers in building science-related journals and has held executive positions in the ASTM International standards organization.

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Diane Earll
Senior Vice President |
Chief Human Resources Officer

Diane Earll oversees USG’s Human Resources, Corporate Communications, Corporate Services, and Environmental, Health & Safety functions. Earll joined USG in 1992 and has held a wide variety of leadership roles with the company, from leading the Customer Service Center to serving as Director of Retail Sales. She is a board member of United Way of Metropolitan Chicago’s Leadership Giving Circle and of the Home Improvement Research Institute.

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Mary A. Martin
Senior Vice President |
General Counsel

Mary Martin is USG’s general counsel, overseeing a team of attorneys responsible for intellectual property, compliance, business ethics, litigation and corporate matters. She is also a member of the USG Business Ethics Committee and Enterprise Risk Management Committee. Martin is an adjunct professional of trial advocacy at Northwestern University and as an instructor with the National Institute of Trial Advocacy.

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Alexander Dadakis
Vice President,
Strategy and Transition

Alex Dadakis is vice president, Strategy and Transition, overseeing corporate and business unit strategy development, M&A, capital allocation, partnerships and joint ventures, and market analysis. Previously, he was a management consultant at Bain & Company and worked in investment banking for Wachovia Securities. Dadakis supports many local nonprofit organizations.

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