Cornerstone Building Brands Executive and Leadership Team

October, 2026

Leadership Overview

Cornerstone Building Brands has 10 executives leading key functions including strategy, technology, information systems, operations, finance, and regional business management.

Focused on delivering high-quality exterior building products, Cornerstone Building Brands drives innovation across North American residential and commercial construction markets to enhance structural integrity and aesthetic value.

Leadership Roles at Cornerstone Building Brands

  • Chief Executive Officer - Gunner Smith
  • Chairman, Interim President & Chief Executive Officer - John Krenicki
  • Senior VP, Finance & Chief Financial Officer, Shelter Solutions - Stephen DeAngelis
  • Senior VP, Business Finance & Chief Financial Officer, BU - Jeffery Hayter
  • Executive Vice President & Chief Operating Officer - Robert Burns
  • President, Canadian Business Unit - Lisa Domnisch
  • President, Stone Solutions - Jason Flack
  • Chief Technology Officer - Michael Gemza
  • Chief Information Officer - Ram Manukonda
  • Chief Technology Officer & Technology Portfolio Manager - Manuel Ali
  • Gunner Smith - Chief Executive Officer

    Gunner Smith, the Chief Executive Officer at Cornerstone Building Brands, directs the overarching corporate strategy for the leading manufacturer of exterior building products. Smith architects long-term growth initiatives while overseeing the alignment of residential and commercial market segments across North America. By prioritizing operational excellence, the Chief Executive Officer ensures the organization maintains a competitive edge in both new construction and repair and remodel sectors. Gunner Smith fosters collaboration among the executive leadership team to optimize manufacturing output and supply chain efficiency. This leadership role involves constant evaluation of market trends to pivot production capabilities toward high-demand exterior solutions. Through rigorous oversight of corporate performance, Smith secures the financial health of the enterprise. Ultimately, the Chief Executive Officer drives the mission of providing durable, high-performance building materials to customers throughout the continent.
    Gunner Smith

    John Krenicki - Chairman, Interim President & Chief Executive Officer

    John Krenicki, the Chairman, Interim President & Chief Executive Officer at Cornerstone Building Brands, governs the strategic direction and board-level oversight of the organization. Krenicki manages the transition of leadership priorities while ensuring the manufacturer of exterior building products remains focused on core market objectives. Overseeing the integration of residential and commercial business units, the Chairman, Interim President & Chief Executive Officer maintains stability across all North American operations. John Krenicki coordinates with the board to refine capital allocation strategies that support sustainable growth in the repair and remodel markets. This executive function requires balancing immediate operational demands with long-term value creation for stakeholders. By streamlining governance processes, Krenicki enhances the agility of the entire corporate structure. Ultimately, the Chairman, Interim President & Chief Executive Officer stabilizes the organizational trajectory during critical phases of development.

    Stephen DeAngelis - Senior VP, Finance & Chief Financial Officer, Shelter Solutions

    Stephen DeAngelis, the Senior VP, Finance & Chief Financial Officer, Shelter Solutions at Cornerstone Building Brands, manages the fiscal health and budgetary planning for the shelter-focused business segment. DeAngelis directs the financial reporting and capital investment strategies that support the production of exterior building products. Overseeing the cost-benefit analysis for new product lines, the Senior VP, Finance & Chief Financial Officer, Shelter Solutions ensures that resource allocation aligns with the broader goals of the North American organization. Stephen DeAngelis monitors market fluctuations in the residential construction sector to adjust pricing models and maintain profitability. This leadership role involves providing the executive team with accurate financial forecasts to guide strategic decision-making. By optimizing the financial performance of the shelter division, DeAngelis contributes to the overall stability of the enterprise. Ultimately, the Senior VP, Finance & Chief Financial Officer, Shelter Solutions drives fiscal discipline across the business unit.

    Jeffery Hayter - Senior VP, Business Finance & Chief Financial Officer, BU

    Jeffery Hayter, the Senior VP, Business Finance & Chief Financial Officer, BU at Cornerstone Building Brands, oversees the financial operations and accounting standards for specific business units. Hayter directs the budgeting processes and revenue analysis for the manufacturing of exterior building products. Overseeing the financial health of the business unit, the Senior VP, Business Finance & Chief Financial Officer, BU ensures that operational costs remain aligned with revenue targets in the North American market. Jeffery Hayter manages the internal audit functions to maintain compliance and transparency across all financial activities. This leadership role involves collaborating with department heads to identify cost-saving opportunities and improve profit margins. By providing detailed financial insights, Hayter enables the business unit to make informed decisions regarding expansion and resource allocation. Ultimately, the Senior VP, Business Finance & Chief Financial Officer, BU drives the financial accountability necessary for sustained corporate success.

    Robert Burns - Executive Vice President & Chief Operating Officer

    Robert Burns, the Executive Vice President & Chief Operating Officer at Cornerstone Building Brands, executes the daily manufacturing and logistics strategies for exterior building products. Burns directs the production output across all North American facilities to meet the high demand of residential and commercial construction markets. Overseeing the end-to-end supply chain, the Executive Vice President & Chief Operating Officer ensures that materials reach customers in the repair and remodel sectors with maximum efficiency. Robert Burns manages the workforce and operational safety protocols to maintain high standards of quality control. This leadership role involves coordinating with regional managers to optimize plant performance and reduce overhead costs. By refining operational workflows, Burns increases the throughput of essential building components. Ultimately, the Executive Vice President & Chief Operating Officer drives the physical production capabilities that define the market presence of the company.

    Lisa Domnisch - President, Canadian Business Unit

    Lisa Domnisch, the President, Canadian Business Unit at Cornerstone Building Brands, directs all operations and market expansion efforts within the Canadian territory. Domnisch oversees the manufacturing and distribution of exterior building products tailored to the specific climate and regulatory requirements of the region. By managing the local residential and commercial sales teams, the President, Canadian Business Unit ensures that the organization maintains a strong presence in the repair and remodel markets. Lisa Domnisch coordinates with the broader North American leadership to align regional strategies with corporate objectives. This leadership role involves building relationships with local contractors and distributors to increase market share. Through the effective management of regional resources, Domnisch optimizes the supply chain to meet local demand. Ultimately, the President, Canadian Business Unit drives the growth and operational success of the company across the Canadian landscape.
    Lisa Domnisch

    Jason Flack - President, Stone Solutions

    Jason Flack, the President, Stone Solutions at Cornerstone Building Brands, leads the specialized division focused on the manufacturing and distribution of stone-based exterior building products. Flack directs the product development and marketing strategies for this segment to capture demand in the North American residential and commercial construction markets. Overseeing the production facilities dedicated to stone solutions, the President, Stone Solutions ensures that all products meet high aesthetic and durability standards. Jason Flack manages the sales channels to expand the reach of the stone portfolio into new repair and remodel projects. This leadership role involves analyzing market trends to introduce innovative stone textures and materials that differentiate the brand. By focusing on the unique requirements of the stone category, Flack enhances the overall product diversity of the organization. Ultimately, the President, Stone Solutions drives the specialized growth and market penetration of this key business segment.
    Jason Flack

    Michael Gemza - Chief Technology Officer

    Michael Gemza, the Chief Technology Officer at Cornerstone Building Brands, architects the digital transformation of manufacturing processes for exterior building products. Gemza directs the implementation of advanced engineering software and automated systems to increase production precision across North American facilities. Overseeing the research and development pipeline, the Chief Technology Officer ensures that product innovation aligns with the evolving needs of residential and commercial construction clients. Michael Gemza integrates cutting-edge material science into the manufacturing workflow to improve the durability and energy efficiency of exterior solutions. This leadership role involves collaborating with operations teams to modernize factory infrastructure and reduce waste. By leveraging data-driven insights, Gemza optimizes the entire product lifecycle from design to final installation. Ultimately, the Chief Technology Officer drives technological advancement to maintain the market leadership of the organization.
    Michael Gemza

    Ram Manukonda - Chief Information Officer

    Ram Manukonda, the Chief Information Officer at Cornerstone Building Brands, manages the enterprise-wide digital infrastructure supporting the manufacturing of exterior building products. Manukonda directs the cybersecurity framework and data management systems that protect critical operational information across North American sites. Overseeing the deployment of scalable cloud solutions, the Chief Information Officer ensures seamless connectivity between corporate headquarters and regional manufacturing hubs. Ram Manukonda optimizes internal communication platforms to facilitate efficient collaboration between residential and commercial sales teams. This leadership role involves modernizing legacy systems to support real-time inventory tracking and supply chain visibility. By implementing robust IT governance, Manukonda mitigates operational risks and enhances the overall agility of the business. Ultimately, the Chief Information Officer drives the digital backbone that enables the organization to scale effectively within the competitive construction industry.

    Manuel Ali - Chief Technology Officer & Technology Portfolio Manager

    Manuel Ali, the Chief Technology Officer & Technology Portfolio Manager at Cornerstone Building Brands, evaluates and selects the technological investments that drive the manufacturing of exterior building products. Ali directs the portfolio of software and hardware assets to ensure the organization utilizes the most efficient tools for production. Overseeing the integration of new technologies into existing manufacturing lines, the Chief Technology Officer & Technology Portfolio Manager ensures that the company remains at the forefront of industry innovation. Manuel Ali manages the lifecycle of technical projects to maximize return on investment across North American operations. This leadership role involves assessing emerging trends in construction technology to identify opportunities for competitive differentiation. By aligning the technology portfolio with business objectives, Ali supports the long-term growth of the organization. Ultimately, the Chief Technology Officer & Technology Portfolio Manager drives the strategic adoption of advanced manufacturing solutions.

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    Frequently Asked Questions Regarding Cornerstone Building Brands Top Executives and Leadership Team

    Who leads Cornerstone Building Brands?
    Cornerstone Building Brands is led by Gunner Smith (Chief Executive Officer), along with executives such as John Krenicki (Chairman, Interim President & Chief Executive Officer) and Stephen DeAngelis (Senior VP, Finance & Chief Financial Officer, Shelter Solutions).
    Who is part of Cornerstone Building Brands’s executive team?
    The executive team of Cornerstone Building Brands includes leaders such as Gunner Smith (Chief Executive Officer), John Krenicki (Chairman, Interim President & Chief Executive Officer), Stephen DeAngelis (Senior VP, Finance & Chief Financial Officer, Shelter Solutions) and other senior executives.
    How many executives does Cornerstone Building Brands have?
    Cornerstone Building Brands has 10 executives leading key business areas.
    What roles are included in Cornerstone Building Brands’s leadership team?
    The leadership team of Cornerstone Building Brands includes roles such as Chief Executive Officer, Chairman, Interim President & Chief Executive Officer, Senior VP, Finance & Chief Financial Officer, Shelter Solutions, Senior VP, Business Finance & Chief Financial Officer, BU, Executive Vice President & Chief Operating Officer.