Business Wire

Johns Manville Announces New CEO, Chairman Transition

Share

Johns Manville (JM), a global building and specialty products manufacturer and a Berkshire Hathaway company, announced today that Bob Wamboldt will become President and CEO on Sept. 1, 2020. Mary Rhinehart, the company’s current Chairman, President and CEO, will retain the role of Chairman.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20200617005674/en/

To view this piece of content from mms.businesswire.com, please give your consent at the top of this page.

Mary Rhinehart (Photo: Business Wire)

Wamboldt joined Johns Manville in 2003 and became President of JM’s Insulation Systems business in February 2017. He earlier led the Engineered Products North America and Roofing Systems businesses at JM. Wamboldt is also Chairman of the North American Insulation Manufacturers Association and previously served as president of the Asphalt Roofing Manufacturers Association.

“I have been privileged to lead each of our businesses and learn first-hand the strength of the Johns Manville customer relationships, products, technologies and people,” Wamboldt said. “I look forward to working with the JM team and our customers to make the company even stronger in the global markets we serve. I also want to thank Mary for her leadership and guidance over the years and know I will benefit from her continued support as Chairman.”

Before joining Johns Manville, Wamboldt worked 16 years at PPG Industries Inc., where he held a variety of positions in the company’s Fiber Glass and Coatings divisions. He earned a bachelor’s degree in chemistry from Lehigh University. He and his wife live in Denver.

Rhinehart became Johns Manville’s President and CEO in 2012 and assumed the additional role of Chairman in 2014. Before becoming President and CEO, she was the company’s Chief Financial Officer for eight years. During her more than 40 years with Johns Manville, she also held leadership roles in treasury, supply chain, M&A and human resources, and she managed several of the company’s business units.

“I am immensely proud of JM’s employees and all we have accomplished together,” Rhinehart said. “Johns Manville is an important part of my life, and its continued success is my top priority as we transition to new leadership. I am pleased to hand the company over to such an accomplished JM executive as Bob and am confident he and our 8,000 employees around the world will continue to build on JM’s 162-year track record of success.”

Johns Manville became a Berkshire Hathaway company in February 2001.

“Bob’s business acumen, broad base of experience, and extensive industry knowledge make him the natural successor to Mary as CEO,” said Greg Abel, Berkshire Hathaway’s Vice Chairman. “I also want to extend my gratitude to Mary for her dedication and commitment to JM over her entire career. Under her leadership as CEO, JM delivered exceptional performance, successfully expanded its market presence, and made sound, strategic investments to position the company for success well into the future.”

Warren Buffett, Chairman and CEO of Berkshire Hathaway, added: “Mary was everything we had hoped to find in a CEO.”

About Johns Manville

Johns Manville, a Berkshire Hathaway company (NYSE: BRK.A, BRK.B), is a leading manufacturer and marketer of premium-quality building and specialty products. In business since 1858, the Denver-based company has annual sales over $3 billion and holds leadership positions in all of the key markets that it serves. Johns Manville employs 8,000 people and operates 46 manufacturing facilities in North America, Europe and China. Additional information can be found at www.jm.com.

To view this piece of content from cts.businesswire.com, please give your consent at the top of this page.

Contact information

Eric Brown, +1-303-809-2853
eric.brown@jm.com

About Business Wire

For more than 50 years, Business Wire has been the global leader in press release distribution and regulatory disclosure.

Subscribe to releases from Business Wire

Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.

Latest releases from Business Wire

Samsung Epis Holdings Delivers Business Updates at the 44th J.P. Morgan Healthcare Conference15.1.2026 02:40:00 EET | Press release

Samsung Epis Holdings (KRX: 0126Z0) today shared corporate progress and updates at the 44th J.P. Morgan Healthcare Conference. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260114206458/en/ Kyung-Ah Kim, President and Chief Executive Officer (CEO) of Samsung Epis Holdings "2026 is a monumental year for us, as we enter into a new chapter for our company. Today, we are announcing six additional candidates in our biosimilar pipeline, including vedolizumab and dupilumab. We are making great progress to secure 20 biosimilars in our portfolio by 2030," said Kyung-Ah Kim, President and Chief Executive Officer (CEO) of Samsung Epis Holdings. “We also received the investigational new drug application (IND) clearance for the first novel therapeutic candidate developed by Samsung Bioepis, and plan to advance our clinical program this year. As we broaden our portfolio beyond biosimilars, we will continue our development efforts in anti

Most Delivered Light-Entry Jet Cessna Citation M2 Gen2 With Garmin Autothrottles Enters Into Service, Bringing Greater Control and Precision to Pilots14.1.2026 21:30:00 EET | Press release

The Cessna Citation M2 Gen2 with Garmin Autothrottles recently entered into service. Certified by the Federal Aviation Administration in October 2025, the integration of Garmin’s Autothrottle system in the Citation M2 Gen2 further supports the most delivered light-entry jet’s capabilities by bringing greater control and precision to pilots. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260114646844/en/ Most delivered light-entry jet Cessna Citation M2 Gen2 with Garmin Autothrottles enters into service, bringing greater control and precision to pilots (Photo Credit: Textron Aviation). The Cessna Citation M2 Gen2 is designed and manufactured by Textron Aviation Inc., a Textron Inc. (NYSE: TXT) company. “We continue to invest in our products to provide customers with the best aviation experience in the world," said Lannie O’Bannion, senior vice president, Sales & Marketing. “The M2 Gen2 leads its segment as the most delivered

TwentyTwo Real Estate and Farallon Capital Complete €761 Million Investment in Isemia, a €1.2bn Healthcare Real Estate Company Created With emeis14.1.2026 19:30:00 EET | Press release

TwentyTwo Real Estate, an independent European real estate investment and management firm, announces the completion, alongside Farallon Capital, of a €761 million investment that led to the creation of Isemia (www.isemiabyemeis.com), a leading healthcare real estate company holding a €1.2 billion portfolio of assets operated by emeis. The transaction represents a significant milestone in TwentyTwo Real Estate’s long-term investment strategy focused on healthcare and operational living real estate. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260114262830/en/ Fachklinik Schömberg Isemia comprises 68 high-quality assets across France, Germany and Spain, with a balanced mix of nursing homes (48%) and clinics (52%). The portfolio benefits from strong fundamentals and resilient operating performance. All properties will continue to be operated by emeis under long-term lease agreements, ensuring continuity of care for residents

AI’s Water Demand to Surge Nearly 130% by 2050 – New Research Shows How to Build a Water-Secure AI Economy14.1.2026 17:00:00 EET | Press release

The rapid global expansion of artificial intelligence is set to drive a 129% increase in water demand across the AI value chain by 2050, according to new research by Xylem (NYSE: XYL) and Global Water Intelligence (GWI). Watering the New Economy: Managing the Impacts of the AI Revolution provides the most comprehensive assessment to date of how AI is reshaping global water use. It also highlights practical ways to meet that demand while strengthening water security for communities. Spending on AI is forecast to approach $2 trillion in 2026,1 accelerating infrastructure build-out worldwide. By the middle of the century, this expansion is projected to add 30 trillion liters of water demand, annually, fueled by a surge in power generation (~54% of the increase), semiconductor fabrication (~42%), and data center expansion (~4%). Crucially, the report finds that this additional demand does not have to result in competition between industry and communities. Today, global water systems proces

Primient to Acquire Full Ownership of Primient Covation, LLC14.1.2026 17:00:00 EET | Press release

Primient, a global leader in biomanufacturing, announced today it has agreed to purchase the remaining ownership interest in Primient Covation, LLC (“Primient Covation”), establishing Primient as the sole owner of the company and marking an exciting new chapter in Primient’s growth in the bioeconomy. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260114344080/en/ This acquisition is the next step of Primient’s strategy to strengthen Primient’s leadership position in biomanufacturing and builds upon recent announcements, including Primient’s partnership with Sustainea and the creation of the iPROOF venture. Primient Covation stands as a leading force in the U.S. biomanufacturing sector, distinguished by its broad range of biomanufacturing and fermentation expertise. The company was founded in 2000 to supply a variety of end markets, including cosmetics and personal care, textiles, fashion, coatings, functional fluids, and oth

In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.

Visit our pressroom
World GlobeA line styled icon from Orion Icon Library.HiddenA line styled icon from Orion Icon Library.Eye