Johns Manville Executive and Leadership Team

June, 2026

Leadership Overview

Johns Manville has 9 executives leading key functions including strategy, human resources, information technology, research and development, people operations, engineered products, roofing systems, and insulation systems.

Driven by innovation, Johns Manville manufactures insulation, roofing materials, and engineered products, shaping the future of building materials with a commitment to sustainability and performance.

Leadership Roles at Johns Manville

  • President & Chief Executive Officer - Robert Wamboldt
  • President, Jm Engineered Products - Jonathan Vasuta
  • President - Janet Myhre
  • President, Roofing Systems - Joseph Smith
  • President, Insulation Systems - Gregory Clarke
  • Chief Human Resources Officer - Eric Cremer
  • Vice President & Chief Information Officer - John Shellenberger
  • Vice President, Research & Chief Technology Officer, Development - Scott Coons
  • Chief People Officer - Michael Green
  • Robert Wamboldt - President & Chief Executive Officer

    Robert Wamboldt, the President & Chief Executive Officer at Johns Manville, directs the company's overarching strategy and operational execution. Wamboldt guides the enterprise's direction, ensuring alignment with market demands for insulation, roofing materials, and engineered products. Overseeing all major business units, the President & Chief Executive Officer drives growth initiatives and fosters a culture of innovation. This leadership role involves significant engagement with the board of directors and key stakeholders to secure long-term financial health and market leadership. By championing strategic partnerships and operational efficiencies, Robert Wamboldt ensures Johns Manville maintains its competitive edge in the manufacturing sector. The executive's focus remains on expanding market reach and enhancing product development pipelines to meet evolving customer needs across North America and globally.

    Jonathan Vasuta - President, Jm Engineered Products

    Jonathan Vasuta, the President, Jm Engineered Products at Johns Manville, leads the strategic direction and operational performance of the engineered products division. Vasuta oversees the development, manufacturing, and commercialization of specialized engineered materials, driving innovation and market expansion. The President, Jm Engineered Products ensures that this business segment meets rigorous quality standards and customer specifications. This leadership role involves managing P&L responsibilities and fostering cross-functional collaboration to achieve growth targets. By focusing on technological advancements and market insights, Jonathan Vasuta strengthens Johns Manville's position in niche engineered product markets. The executive's commitment to operational excellence and customer satisfaction underpins the division's contribution to the company's overall success.

    Janet Myhre - President

    Janet Myhre, the President at Johns Manville, directs significant operational segments of the company, contributing to its overall market leadership. Myhre oversees key business functions, ensuring efficient production and delivery of insulation, roofing materials, and engineered products. The President drives strategic initiatives aimed at enhancing operational efficiency and expanding market presence. This role involves close coordination with other executive leaders to align divisional objectives with corporate strategy. By focusing on sustainable practices and product quality, Janet Myhre reinforces Johns Manville's commitment to excellence. The executive's leadership ensures that the managed divisions consistently meet performance benchmarks and contribute to the company's sustained growth and profitability.

    Joseph Smith - President, Roofing Systems

    Joseph Smith, the President, Roofing Systems at Johns Manville, spearheads the strategic growth and operational management of the roofing division. Smith directs the innovation, manufacturing, and distribution of high-performance roofing materials, catering to diverse market needs. The President, Roofing Systems ensures product quality and reliability, reinforcing Johns Manville's reputation for excellence in the construction industry. This executive manages P&L accountability and drives market penetration strategies across North America and international territories. By focusing on customer needs and technological advancements, Joseph Smith enhances the division's competitive standing. The executive's leadership ensures the roofing systems segment consistently delivers value and contributes significantly to the company's revenue and market share.

    Gregory Clarke - President, Insulation Systems

    Gregory Clarke, the President, Insulation Systems at Johns Manville, leads the strategic vision and operational execution for the insulation division. Clarke oversees the development, production, and marketing of advanced insulation solutions, driving market leadership in energy efficiency and building performance. The President, Insulation Systems ensures adherence to stringent quality and safety standards across all manufacturing facilities. This executive manages the division's financial performance and champions initiatives for product innovation and sustainability. By focusing on market trends and customer requirements, Gregory Clarke strengthens Johns Manville's position as a premier provider of insulation products. The executive's dedication to operational excellence and technological advancement underpins the division's significant contribution to the company's success.
    Gregory Clarke

    Eric Cremer - Chief Human Resources Officer

    Eric Cremer, the Chief Human Resources Officer at Johns Manville, architects the global human capital strategy. Cremer oversees talent acquisition, development, and retention programs critical for supporting the manufacturing of insulation, roofing materials, and engineered products. The Chief Human Resources Officer ensures robust employee relations and fosters an inclusive workplace environment across all operational sites. This position involves close collaboration with divisional presidents to align HR initiatives with business objectives, driving workforce engagement and productivity. By implementing innovative HR policies, Eric Cremer supports the company's mission to deliver high-performance building materials. The executive's responsibilities extend to compensation, benefits, and organizational design, ensuring Johns Manville attracts and retains top talent essential for sustained innovation and market expansion.
    Eric Cremer

    John Shellenberger - Vice President & Chief Information Officer

    John Shellenberger, the Vice President & Chief Information Officer at Johns Manville, spearheads the company's technology infrastructure and digital transformation efforts. Shellenberger manages all IT operations, ensuring the secure and efficient deployment of systems that support the manufacturing of insulation, roofing materials, and engineered products. The Vice President & Chief Information Officer drives the integration of advanced technologies to enhance operational efficiency and data analytics capabilities. This role involves strategic planning for cybersecurity, cloud computing, and enterprise resource planning systems. By optimizing the IT landscape, John Shellenberger enables Johns Manville to respond effectively to market dynamics and customer demands. The executive's leadership ensures technological advancements directly contribute to product innovation and supply chain optimization across the organization.
    John Shellenberger

    Scott Coons - Vice President, Research & Chief Technology Officer, Development

    Scott Coons, the Vice President, Research & Chief Technology Officer, Development at Johns Manville, leads the innovation pipeline for the company's product portfolio. Coons directs all research and development activities, focusing on creating next-generation insulation, roofing materials, and engineered products. The Vice President, Research & Chief Technology Officer, Development champions scientific exploration and technological advancement to enhance product performance and sustainability. This position requires deep expertise in materials science and engineering to drive breakthroughs. By fostering a collaborative research environment, Scott Coons ensures Johns Manville remains at the forefront of industry innovation. The executive's strategic vision guides the development of new materials and manufacturing processes, directly impacting the company's competitive advantage and market growth.

    Michael Green - Chief People Officer

    Michael Green, the Chief People Officer at Johns Manville, cultivates a high-performance culture and oversees talent management strategies. Green directs initiatives focused on employee engagement, leadership development, and organizational effectiveness, crucial for supporting the company's manufacturing operations. The Chief People Officer ensures that human resources practices align with Johns Manville's strategic goals, promoting a productive and supportive work environment. This executive collaborates across departments to implement programs that enhance employee well-being and professional growth. By prioritizing people-centric policies, Michael Green strengthens the workforce's capacity to deliver innovative insulation, roofing materials, and engineered products. The executive's focus is on building a resilient and skilled team capable of driving business success and operational excellence.

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    Frequently Asked Questions Regarding Johns Manville Top Executives and Leadership Team

    Who leads Johns Manville?
    Johns Manville is led by Robert Wamboldt (President & Chief Executive Officer), along with executives such as Jonathan Vasuta (President, Jm Engineered Products) and Janet Myhre (President).
    Who is part of Johns Manville’s executive team?
    The executive team of Johns Manville includes leaders such as Robert Wamboldt (President & Chief Executive Officer), Jonathan Vasuta (President, Jm Engineered Products), Janet Myhre (President) and other senior executives.
    How many executives does Johns Manville have?
    Johns Manville has 9 executives leading key business areas.
    What roles are included in Johns Manville’s leadership team?
    The leadership team of Johns Manville includes roles such as President & Chief Executive Officer, President, Jm Engineered Products, President, President, Roofing Systems, President, Insulation Systems.