Glanbia Executive and Leadership Team

November, 2026

Leadership Overview

Glanbia has 5 executives leading key functions including human resources, financial strategy, legal compliance, corporate operations, and global people management.

Focused on delivering high-quality nutrition solutions, Glanbia drives global market growth through the production of performance nutrition, cheese, and specialized mineral ingredients for diverse consumer needs.

Leadership Roles at Glanbia

  • Chief Financial Officer & Executive Director - Mark Garvey
  • President - Richard Alessandro
  • Chief Human Resources Officer - Susan Sweem
  • Chief Legal Officer - Matthew Sullivan
  • Chief People Officer, Gpn - Jon Atchue
  • Mark Garvey - Chief Financial Officer & Executive Director

    Mark Garvey, the Chief Financial Officer & Executive Director at Glanbia, manages all fiscal planning and capital allocation strategies. Overseeing the financial health of the organization, the Chief Financial Officer & Executive Director ensures rigorous reporting standards across all food processing divisions. This leadership role involves optimizing the balance sheet to support investments in vitamin and mineral ingredient innovation. By directing global financial operations, Mark Garvey directly impacts the company's ability to scale production capacity. Garvey coordinates with the Board to execute long-term value creation for shareholders. Through the oversight of risk management and treasury functions, the Chief Financial Officer & Executive Director maintains stability in volatile commodity markets. Garvey drives financial discipline across the enterprise to ensure consistent revenue growth. Ultimately, the Chief Financial Officer & Executive Director secures the capital resources required for ongoing international expansion.
    Mark Garvey

    Richard Alessandro - President

    Richard Alessandro, the President at Glanbia, directs the overarching operational strategy and execution of the company's core business units. Overseeing the production of cheese and performance nutrition, the President ensures seamless integration between manufacturing and market demand. This leadership role involves driving growth initiatives across North American and international markets. By optimizing the supply chain, Richard Alessandro directly impacts the efficiency of the food processing operations. Alessandro coordinates with other C-suite leaders to align product development with evolving consumer health trends. Through the management of large-scale industrial assets, the President maintains high output standards for vitamin and mineral ingredients. Alessandro fosters a culture of operational excellence to maximize profitability. Ultimately, the President secures the competitive positioning of the company by overseeing the successful delivery of high-quality nutritional products to a global customer base.

    Susan Sweem - Chief Human Resources Officer

    Susan Sweem, the Chief Human Resources Officer at Glanbia, directs all global talent acquisition and organizational development initiatives. Overseeing the workforce strategy, the Chief Human Resources Officer ensures alignment with the company's food processing objectives. This leadership role involves cultivating a high-performance culture across international manufacturing sites. By implementing robust training programs, Susan Sweem directly impacts the operational efficiency of the entire organization. Sweem manages complex labor relations and compensation structures to attract top-tier industry talent. Through the integration of advanced human capital management systems, the Chief Human Resources Officer supports the long-term scalability of the business. Sweem maintains a focus on employee engagement to drive productivity within the performance nutrition and ingredient sectors. Ultimately, the Chief Human Resources Officer secures the human infrastructure necessary for sustained global market leadership.
    Susan Sweem
    Matthew Sullivan, the Chief Legal Officer at Glanbia, directs all corporate governance and regulatory compliance frameworks. Overseeing the legal department, the Chief Legal Officer ensures adherence to international food safety standards and trade regulations. This leadership role involves managing intellectual property portfolios related to specialized nutrition ingredients. By mitigating operational risks, Matthew Sullivan directly impacts the company's ability to navigate complex global markets. Sullivan provides strategic counsel to the executive team regarding mergers, acquisitions, and contractual obligations. Through the oversight of litigation and compliance audits, the Chief Legal Officer protects the corporate reputation across all manufacturing regions. Sullivan maintains rigorous standards for ethical business conduct throughout the supply chain. Ultimately, the Chief Legal Officer secures the legal foundation necessary for the company to innovate and distribute performance nutrition products safely and effectively.

    Jon Atchue - Chief People Officer, Gpn

    Jon Atchue, the Chief People Officer, Gpn at Glanbia, directs the talent strategy specifically for the performance nutrition division. Overseeing the organizational structure within this key business unit, the Chief People Officer, Gpn ensures that human capital initiatives support the rapid development of sports nutrition products. This leadership role involves fostering innovation through specialized recruitment and leadership development programs. By aligning team capabilities with market-specific demands, Jon Atchue directly impacts the growth of the performance nutrition portfolio. Atchue manages the cultural integration of diverse teams across global regions to maintain a unified brand identity. Through the implementation of performance management systems, the Chief People Officer, Gpn drives accountability and excellence within the division. Atchue supports the strategic objectives of the broader company by cultivating a highly skilled workforce. Ultimately, the Chief People Officer, Gpn secures the talent pipeline necessary for sustained market dominance.

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    Frequently Asked Questions Regarding Glanbia Top Executives and Leadership Team

    Who leads Glanbia?
    Glanbia is led by Mark Garvey (Chief Financial Officer & Executive Director), along with executives such as Richard Alessandro (President) and Susan Sweem (Chief Human Resources Officer).
    Who is part of Glanbia’s executive team?
    The executive team of Glanbia includes leaders such as Mark Garvey (Chief Financial Officer & Executive Director), Richard Alessandro (President), Susan Sweem (Chief Human Resources Officer) and other senior executives.
    How many executives does Glanbia have?
    Glanbia has 5 executives leading key business areas.
    What roles are included in Glanbia’s leadership team?
    The leadership team of Glanbia includes roles such as Chief Financial Officer & Executive Director, President, Chief Human Resources Officer, Chief Legal Officer, Chief People Officer, Gpn.