Cornerstone Building Brands Executive and Leadership Team

November, 2026

Leadership Overview

Cornerstone Building Brands has 10 executives leading key functions including strategy, information technology, operations, finance, and legal affairs.

Focused on delivering high-quality exterior building products, Cornerstone Building Brands drives innovation across North American residential and commercial markets to enhance construction efficiency and long-term structural durability.

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, Stone Solutions - Jason Flack
  • Chief Information Officer - Ram Manukonda
  • Chief Technology Officer - Michael Gemza
  • Chief Technology Officer & Technology Portfolio Manager - Manuel Ali
  • Executive VP, General Counsel & Corporate Secretary - Alena Brenner
  • Gunner Smith - Chief Executive Officer

    Gunner Smith, the Chief Executive Officer at Cornerstone Building Brands, directs the overarching corporate strategy for the organization. Smith oversees the expansion of exterior building product manufacturing across North American residential and commercial sectors. By aligning operational goals with market demand, the Chief Executive Officer ensures consistent growth in both new construction and repair and remodel segments. This leadership role involves constant collaboration with the Board to refine long-term vision and capital allocation. Gunner Smith maintains a focus on operational excellence, driving efficiency throughout the supply chain to maximize shareholder value. Through rigorous oversight of business units, the Chief Executive Officer secures the competitive position of the company within the building materials industry. Smith prioritizes sustainable growth initiatives that strengthen the market presence of the organization across diverse geographic regions.
    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 executive oversight of the firm. Krenicki manages the transition of leadership initiatives while maintaining stability across all manufacturing operations. As the Chairman, Interim President & Chief Executive Officer, Krenicki coordinates with senior management to optimize the production of exterior building products for North American clients. This role demands precise execution of corporate governance standards and the alignment of business objectives with the evolving needs of the construction market. John Krenicki drives performance improvements by streamlining internal processes and fostering a culture of accountability. By balancing immediate operational requirements with long-term strategic goals, Krenicki ensures the organization remains a leader in the building materials sector. The Chairman, Interim President & Chief Executive Officer provides the necessary guidance to navigate complex market dynamics effectively.

    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, directs the financial planning and analysis for the Shelter Solutions business unit. DeAngelis oversees the budgeting, forecasting, and capital allocation processes to ensure the profitability of exterior building product lines. As the Senior VP, Finance & Chief Financial Officer, Shelter Solutions, DeAngelis drives financial discipline across the division to support sustainable growth in North American markets. This leadership role involves providing actionable insights to the executive team regarding cost structures and revenue opportunities. Stephen DeAngelis manages the financial risk profile of the unit, ensuring compliance with corporate standards and regulatory requirements. By optimizing the financial performance of the Shelter Solutions segment, the Senior VP, Finance & Chief Financial Officer, Shelter Solutions contributes directly to the overall fiscal health of the organization.

    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, manages the financial operations and strategic accounting for specific business units. Hayter oversees the financial reporting and performance tracking to ensure alignment with the broader corporate objectives. As the Senior VP, Business Finance & Chief Financial Officer, BU, Hayter drives the development of financial models that support investment decisions in the exterior building products sector. This leadership role involves collaborating with operational leaders to identify cost-saving opportunities and revenue growth drivers. Jeffery Hayter ensures the integrity of financial data and the effectiveness of internal controls across the assigned business units. By providing rigorous financial oversight, the Senior VP, Business Finance & Chief Financial Officer, BU enables the organization to maintain a strong balance sheet while pursuing expansion in North American construction markets.

    Robert Burns - Executive Vice President & Chief Operating Officer

    Robert Burns, the Executive Vice President & Chief Operating Officer at Cornerstone Building Brands, manages the daily manufacturing and logistics operations across North America. Burns oversees the production facilities to ensure the consistent delivery of exterior building products to residential and commercial customers. As the Executive Vice President & Chief Operating Officer, Burns drives operational excellence by optimizing supply chain workflows and reducing manufacturing lead times. This leadership role involves coordinating with regional managers to maintain high safety and quality standards throughout the organization. Robert Burns implements lean manufacturing principles to enhance productivity and control costs in the competitive building materials market. By focusing on operational scalability, the Executive Vice President & Chief Operating Officer supports the company's ability to meet fluctuating demand in the new construction sector. Burns ensures that all operational activities align with the broader corporate mission.

    Jason Flack - President, Stone Solutions

    Jason Flack, the President, Stone Solutions at Cornerstone Building Brands, directs the strategic growth and operational performance of the stone product division. Flack oversees the manufacturing, marketing, and distribution of stone solutions for residential and commercial construction projects across North America. As the President, Stone Solutions, Flack drives the expansion of the product portfolio to meet the evolving aesthetic and functional requirements of the market. This leadership role involves managing the division's profit and loss, ensuring that production capabilities align with customer demand. Jason Flack fosters innovation in stone manufacturing to improve product quality and installation efficiency. By focusing on market penetration and brand positioning, the President, Stone Solutions ensures the division remains a key contributor to the overall success of the company. Flack coordinates with sales teams to capture new opportunities in the repair and remodel sectors.
    Jason Flack

    Ram Manukonda - Chief Information Officer

    Ram Manukonda, the Chief Information Officer at Cornerstone Building Brands, architects the digital infrastructure supporting the manufacturing and distribution of exterior building products. Manukonda oversees the integration of enterprise resource planning systems to enhance data visibility across North American operations. As the Chief Information Officer, Manukonda drives the adoption of advanced analytics to improve decision-making within the residential and commercial construction segments. This leadership role involves securing the digital perimeter against emerging threats while ensuring seamless connectivity between regional facilities. Ram Manukonda manages the technology roadmap to support scalable growth and operational agility. By modernizing legacy systems, the Chief Information Officer enables the organization to respond rapidly to shifting market demands. Manukonda ensures that all information technology investments directly contribute to the efficiency and productivity of the broader business model.

    Michael Gemza - Chief Technology Officer

    Michael Gemza, the Chief Technology Officer at Cornerstone Building Brands, directs the research and development of innovative exterior building materials. Gemza oversees the engineering teams responsible for advancing product performance and durability for North American construction projects. As the Chief Technology Officer, Gemza drives the implementation of new manufacturing technologies that reduce waste and increase output quality. This leadership role involves close coordination with product management to ensure that technical advancements meet the specific needs of the repair and remodel markets. Michael Gemza fosters a culture of continuous improvement, pushing the boundaries of material science to maintain a competitive edge. By aligning technical capabilities with customer requirements, the Chief Technology Officer supports the long-term growth strategy of the company. Gemza ensures that all technological initiatives remain focused on delivering superior value to residential and commercial clients.
    Michael Gemza

    Manuel Ali - Chief Technology Officer & Technology Portfolio Manager

    Manuel Ali, the Chief Technology Officer & Technology Portfolio Manager at Cornerstone Building Brands, governs the strategic selection and lifecycle management of the technology portfolio. Ali oversees the evaluation of emerging technologies to ensure the manufacturing processes remain at the forefront of the industry. As the Chief Technology Officer & Technology Portfolio Manager, Ali drives the integration of digital tools that enhance the design and production of exterior building products. This leadership role involves balancing the investment in new technology with the maintenance of existing systems to maximize return on investment. Manuel Ali coordinates with cross-functional teams to ensure that the technology portfolio supports the specific needs of the residential and commercial construction markets. By managing the technical roadmap, the Chief Technology Officer & Technology Portfolio Manager ensures that the organization maintains a robust and future-ready infrastructure.

    Alena Brenner - Executive VP, General Counsel & Corporate Secretary

    Alena Brenner, the Executive VP, General Counsel & Corporate Secretary at Cornerstone Building Brands, directs the legal strategy and corporate governance framework for the organization. Brenner oversees all legal affairs, including regulatory compliance, contract management, and litigation support for the manufacturing operations. As the Executive VP, General Counsel & Corporate Secretary, Brenner drives the implementation of policies that protect the intellectual property and reputation of the company. This leadership role involves advising the Board and executive team on complex legal matters related to the North American building materials market. Alena Brenner manages the corporate secretarial functions, ensuring transparency and adherence to governance standards. By mitigating legal risks and fostering ethical business practices, the Executive VP, General Counsel & Corporate Secretary supports the long-term stability and growth of the organization across all residential and commercial segments.

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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.