Johns Manville Executive and Leadership Team

July, 2026

Leadership Overview

Johns Manville has 7 executives leading key functions including strategy, information technology, and product systems.

Driven by innovation, Johns Manville manufactures insulation, roofing materials, and engineered products, shaping sustainable building solutions and impacting global infrastructure through advanced material science.

Leadership Roles at Johns Manville

  • President and Chief Executive Officer - Jonathan (John) Vasuta
  • President & Chief Executive Officer - Robert Wamboldt
  • President, Insulation Systems - Gregory Clarke
  • President - Janet Myhre
  • President, Roofing Systems - Joseph Smith
  • Chief Information Officer - John Schellenberger
  • Vice President & Chief Information Officer - John Shellenberger
  • Jonathan (John) Vasuta - President and Chief Executive Officer

    Jonathan (John) Vasuta, the President and Chief Executive Officer at Johns Manville, directs the company's overarching strategy and operational execution. Vasuta guides the enterprise's commitment to manufacturing high-performance insulation, roofing materials, and engineered products. This leadership role involves setting the vision for innovation and sustainable practices across all business units. By focusing on market leadership and customer value, Jonathan (John) Vasuta ensures the company's continued growth and impact in the building materials sector. The Chief Executive Officer's purview extends to financial performance, strategic partnerships, and fostering a culture of excellence throughout the global organization. Vasuta's strategic direction underpins the company's mission to enhance the quality of life through better building solutions.
    Jonathan (John) Vasuta

    Robert Wamboldt - President & Chief Executive Officer

    Robert Wamboldt, the President & Chief Executive Officer at Johns Manville, drives the strategic direction and operational oversight for the organization. Wamboldt's leadership focuses on advancing the company's position as a premier manufacturer of insulation, roofing materials, and engineered products. This executive function involves cultivating key relationships with stakeholders and ensuring alignment with corporate objectives. Through meticulous planning and execution, Robert Wamboldt champions initiatives that enhance product innovation and market penetration. The Chief Executive Officer's responsibilities encompass guiding the company's financial health and long-term sustainability. Wamboldt's strategic vision propels Johns Manville's mission to deliver essential building materials that improve energy efficiency and structural integrity.

    Gregory Clarke - President, Insulation Systems

    Gregory Clarke, the President, Insulation Systems at Johns Manville, leads the strategic development and operational management of the company's insulation product lines. Clarke oversees the innovation, manufacturing, and market deployment of high-performance insulation materials designed for residential, commercial, and industrial applications. This leadership role involves driving product differentiation, ensuring quality control, and expanding market reach within the building materials sector. By focusing on sustainable solutions and energy efficiency, Gregory Clarke enhances the value proposition of Johns Manville's insulation offerings. The President, Insulation Systems' responsibilities include managing P&L for the division, fostering cross-functional collaboration, and aligning business objectives with corporate strategy. Clarke's direction ensures the continued success and market leadership of the insulation systems division.
    Gregory Clarke

    Janet Myhre - President

    Janet Myhre, the President at Johns Manville, directs key strategic initiatives and operational functions across designated business segments. Myhre's leadership focuses on driving performance and growth within the company's diverse portfolio of building materials and engineered products. This executive position involves overseeing market strategies, optimizing resource allocation, and ensuring alignment with the company's overall mission. By championing operational excellence and customer-centric approaches, Janet Myhre strengthens Johns Manville's market position. The President's responsibilities include fostering strategic partnerships, managing key stakeholder relationships, and guiding the execution of critical business plans. Myhre's leadership contributes significantly to the company's sustained success and its commitment to delivering innovative solutions.

    Joseph Smith - President, Roofing Systems

    Joseph Smith, the President, Roofing Systems at Johns Manville, spearheads the strategic direction and operational execution for the company's roofing solutions division. Smith oversees the development, manufacturing, and distribution of a comprehensive range of roofing materials, including asphaltic and single-ply systems, for commercial and residential markets. This leadership position involves driving product innovation, ensuring superior quality and performance, and expanding market share in the competitive roofing industry. By focusing on durability, sustainability, and ease of installation, Joseph Smith enhances the value and reliability of Johns Manville's roofing products. The President, Roofing Systems' responsibilities include managing the division's financial performance, cultivating strong customer relationships, and leading a dedicated team. Smith's strategic oversight ensures the continued growth and market leadership of the roofing systems business.

    John Schellenberger - Chief Information Officer

    John Schellenberger, the Chief Information Officer at Johns Manville, architects the company's technology strategy and digital transformation initiatives. Schellenberger oversees the development and implementation of robust IT infrastructure supporting the manufacturing of insulation, roofing materials, and engineered products. This critical role involves ensuring data security, optimizing operational efficiency through technology, and driving innovation in digital solutions. By leveraging cutting-edge technologies, John Schellenberger enhances the company's competitive advantage and supports its global operations. The Chief Information Officer's leadership ensures seamless integration of information systems across all departments, facilitating informed decision-making and operational agility. Schellenberger's focus on technological advancement empowers Johns Manville to meet evolving market demands.

    John Shellenberger - Vice President & Chief Information Officer

    John Shellenberger, the Vice President & Chief Information Officer at Johns Manville, directs the company's information technology operations and strategic digital roadmap. Shellenberger manages the technological backbone that supports the production of insulation, roofing materials, and engineered products, ensuring system reliability and scalability. This executive position involves leading cybersecurity efforts, optimizing enterprise resource planning systems, and fostering a culture of technological innovation. By implementing advanced IT solutions, John Shellenberger enhances operational efficiency and supports Johns Manville's global business objectives. The Vice President & Chief Information Officer's responsibilities include overseeing IT governance, managing vendor relationships, and driving digital transformation projects. Shellenberger's expertise ensures that technology effectively supports the company's manufacturing excellence and market leadership.
    John Shellenberger

    Explore Leadership Teams in Building Materials

    Frequently Asked Questions Regarding Johns Manville Top Executives and Leadership Team

    Who leads Johns Manville?
    Johns Manville is led by Jonathan (John) Vasuta (President and Chief Executive Officer), along with executives such as Robert Wamboldt (President & Chief Executive Officer) and Gregory Clarke (President, Insulation Systems).
    Who is part of Johns Manville’s executive team?
    The executive team of Johns Manville includes leaders such as Jonathan (John) Vasuta (President and Chief Executive Officer), Robert Wamboldt (President & Chief Executive Officer), Gregory Clarke (President, Insulation Systems) and other senior executives.
    How many executives does Johns Manville have?
    Johns Manville has 7 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 and Chief Executive Officer, President & Chief Executive Officer, President, Insulation Systems, President, President, Roofing Systems.