Johns Manville Announces New CEO, Chairman Transition
17.6.2020 20:30:00 EEST | Business Wire | Press release
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/
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.
View source version on businesswire.com: https://www.businesswire.com/news/home/20200617005674/en/
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
Loomis Sayles Growth Equity Strategies Team Celebrates Twenty-Year Milestones7.7.2026 17:36:00 EEST | Press release
Loomis, Sayles & Company, the century-old investment manager with nearly $418 billion in assets under management, proudly celebrates the 20-year anniversaries of the Loomis Sayles Large Cap Growth and the Loomis Sayles All Cap Growth strategies, as well as a differentiated approach to growth equity investing under the leadership of Aziz V. Hamzaogullari, CFA, the founder, chief investment officer and portfolio manager of the Loomis Sayles Growth Equity Strategies (GES) Team. Aziz is also an executive vice president and a member of the firm’s Board of Directors. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260707992418/en/ Celebrating 20 Years of The Power of Active Management Done Right GES is a cohesive team with 20 years of alpha generation and a long-term, private equity approach to investing. Under Aziz Hamzaogullari’s leadership since 2010, assets under management for GES have grown from $1.9 billion to $98.2 billion
Integral Ad Science Appoints Lidiane Jones Chief Executive Officer7.7.2026 16:35:00 EEST | Press release
Integral Ad Science (IAS), one of the world's most trusted media quality companies, today announced the appointment of Lidiane Jones as Chief Executive Officer, effective immediately. Jones succeeds Lisa Utzschneider, who led IAS for more than seven years and will remain with the company as Special Advisor to the Board through the end of 2026 to support a seamless transition. Utzschneider will also serve as a Special Advisor to Novacap and their portfolio companies. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260707780892/en/ Lidiane Jones: Integral Ad Science CEO, Photo Credit: Pamela Hanson The appointment reflects IAS's long-term strategic vision for the future of digital advertising. As AI transforms how media is planned, bought, measured, and optimized, advertisers increasingly need trusted intelligence to make real-time decisions. Jones's deep expertise across product, technology, and AI uniquely positions IAS to bu
Andersen Global Adds Collaborating Firm Abcoo Law Firm7.7.2026 16:30:00 EEST | Press release
Andersen Global strengthens its presence in Türkiye with collaborating firm Abcoo Law Firm, enhancing the organization’s existing platform in the country with the addition of legal capabilities. Founded in 2014, Abcoo advises local and international clients across a broad range of legal services, with experience in corporate and M&A, real estate and construction, dispute resolution, employment, compliance, banking and finance, competition and intellectual property law. The firm is consistently recognized as a top tier and leading firm by international publications, including The Legal 500. Abcoo supports organizations across a wide range of industries, including real estate and construction, retail, textile, cosmetics, automotive, logistics, chemicals, IT, energy, healthcare, manufacturing and financial services, providing strategic legal guidance and commercially focused solutions. “Our focus has always been on understanding each client’s objectives and providing practical, commercial
Altasciences and Evidence Matters Advance AI-Driven Drug Development With Nonclinical Automation Breakthrough7.7.2026 16:00:00 EEST | Press release
Altasciences, a fully integrated early-phase drug development organization, and Evidence Matters, a pioneer in clinical trial data science, are pleased to announce a successful proof-of-concept (POC) of RegulatoryFlow (“RegFlow”), following the announcement of the companies’ strategic collaboration in August 2025. The POC demonstrated the extension of AI-driven efficiencies from clinical reporting into nonclinical workflows, marking a significant step forward in accelerating drug development timelines. Building on proven results in clinical reporting, where the collaboration has achieved up to first-draft clinical study reports (CSRs), the teams have now successfully applied similar AI capabilities to nonclinical data through high-quality parsing of raw and SEND datasets in a proof-of-concept. This advancement aligns with the Altasciences Acceleration Platform, designed to fast-track drug development across the early-phase development continuum. “This milestone reflects the power of in
Gurobi Launches Intelligence Hub to Deliver AI-Guided Workflows Across the Optimization Lifecycle7.7.2026 16:00:00 EEST | Press release
Gurobi Optimization, LLC, the leader in decision intelligence technology, today announced the launch of the Gurobi Intelligence Hub, the new home for Gurobi’s AI-powered optimization agents. The Intelligence Hub is designed to help users build, understand, troubleshoot, and interact with optimization models more effectively. Together, the Hub’s specialized agents leverage generative AI to guide users through workflows across the optimization lifecycle, creating new opportunities to make optimization more accessible, intuitive, and valuable for a broader range of users. The Modeler combines guided workflows with Gurobi’s optimization expertise to help users move from business problem to production-quality optimization model. Through an iterative process that helps refine requirements, validate assumptions, and develop acceptance tests, the Modeler gives users confidence that their model accurately reflects the intended business problem.The Explainer helps users interpret model instances
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
