Johns Manville announced that Mary Rhinehart has been named chairman of the company. Rhinehart was appointed as JM President and chief executive officer in November 2012.

“With more than three decades of comprehensive experience at JM, Mary Rhinehart has proven not only her ability to succeed at every level, but also her commitment to the business and passion for JM’s employees and customers. Mary is the right choice for Chairman of JM,” said Warren Buffett, chairman and CEO of Berkshire Hathaway.

Rhinehart has held a variety of roles during her 35-year career, including as general manager of several Johns Manville business units. Before being named CEO, she was Chief Financial Officer, providing her breadth of experience in all financial operations of the company, including M&A. From human resources to supply chain management, Rhinehart’s wide range of responsibilities have also encompassed global business management and strategic business development.

“I am proud to assume the role of Chairman of Johns Manville and am grateful for the confidence Berkshire Hathaway has placed in me,” said Rhinehart. “Moving forward, JM will continue to win by delivering powerful experiences to our customers and employees—experiences which will create lasting relationships, sustainable competitive advantage and profitable growth.”

In addition to her JM responsibilities, Rhinehart serves on the CoBiz Financial board of directors; the University of Colorado Health Systems board; the Ply Gem Holdings, Inc. board; and the executive committee for the policy advisory board for the Harvard Joint Center for Housing Studies.