Glanbia Executive and Leadership Team

September, 2026

Leadership Overview

Glanbia has 4 executives leading key functions including financial strategy, human capital management, legal compliance, and operational oversight.

Focused on global nutrition and food processing, Glanbia delivers high-quality performance ingredients while maintaining a commitment to sustainable growth and excellence in the international food manufacturing sector.

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
  • Mark Garvey - Chief Financial Officer & Executive Director

    Mark Garvey, the Chief Financial Officer & Executive Director at Glanbia, manages the global financial architecture and capital allocation strategies for the organization. Overseeing fiscal reporting, treasury operations, and investor relations, the Chief Financial Officer & Executive Director ensures the company maintains a robust balance sheet to support ongoing investments in performance nutrition and mineral ingredients. Garvey directs the long-term financial planning processes, aligning budgetary goals with the broader corporate mission of expanding market reach across international territories. By monitoring economic trends and risk management protocols, the Chief Financial Officer & Executive Director provides the necessary oversight to sustain profitability in competitive food processing markets. Mark Garvey maintains close collaboration with the Board to optimize shareholder value through disciplined capital deployment. This leadership role requires constant vigilance over financial performance metrics, ensuring the enterprise remains agile while navigating complex global regulatory environments and evolving consumer demands within the nutrition sector.
    Mark Garvey

    Richard Alessandro - President

    Richard Alessandro, the President at Glanbia, directs the day-to-day operational execution and strategic implementation across the company's diverse business units. Overseeing the production of performance nutrition, cheese, and mineral ingredients, the President ensures that manufacturing processes meet the highest quality standards for global distribution. Alessandro manages the integration of supply chain logistics and market-facing initiatives to optimize efficiency and customer satisfaction. By coordinating with department heads, the President aligns operational output with the long-term vision of the organization. Richard Alessandro drives the expansion of market presence by identifying new opportunities for product development and regional growth. This leadership role involves balancing immediate production requirements with the need for continuous innovation in food processing technology. Through rigorous oversight of operational performance, the President maintains the competitive edge of the company in the international nutrition sector. Alessandro ensures that all business activities remain focused on delivering value to customers while achieving sustainable growth targets across all primary industry segments.

    Susan Sweem - Chief Human Resources Officer

    Susan Sweem, the Chief Human Resources Officer at Glanbia, architects the global talent strategy and organizational culture initiatives required to support a diverse workforce. Overseeing recruitment, leadership development, and employee engagement programs, the Chief Human Resources Officer ensures the company attracts top-tier professionals capable of driving innovation in food processing and performance nutrition. Sweem directs the implementation of performance management systems that align individual contributions with the overarching corporate objectives. By fostering an inclusive workplace environment, the Chief Human Resources Officer strengthens the internal capabilities necessary for scaling operations across various geographic regions. Susan Sweem collaborates with executive leadership to refine compensation structures and succession planning, ensuring the organization retains critical expertise. This role involves managing complex labor relations and organizational design to maintain operational efficiency. Through strategic workforce planning, the Chief Human Resources Officer empowers the entire team to meet the evolving demands of the global nutrition market while upholding the core values of the enterprise.
    Susan Sweem
    Matthew Sullivan, the Chief Legal Officer at Glanbia, directs the global legal strategy and corporate governance framework for the organization. Overseeing regulatory compliance, intellectual property protection, and contract negotiations, the Chief Legal Officer ensures the company operates within the legal standards of every market where performance nutrition and mineral ingredients are distributed. Sullivan manages complex litigation and risk mitigation efforts, providing essential guidance to the Board regarding international trade laws and food safety regulations. By architecting robust compliance programs, the Chief Legal Officer safeguards the reputation and operational integrity of the business. Matthew Sullivan collaborates with other C-suite leaders to navigate the legal intricacies of mergers, acquisitions, and strategic partnerships that drive growth. This leadership role requires deep expertise in corporate law to address the challenges inherent in the global food processing industry. Through proactive legal counsel, the Chief Legal Officer secures the long-term stability of the enterprise while facilitating expansion into new territories.

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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 4 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.