Graham Packaging Executive and Leadership Team

May, 2026

Leadership Overview

Graham Packaging has 7 executives leading key functions including strategy, finance, technology, human resources, legal, and operational divisions.

Driven by innovation, Graham Packaging is dedicated to delivering customized, value-added, and sustainable packaging solutions that meet the evolving demands of modern consumers and diverse product categories.

Leadership Roles at Graham Packaging

  • President & Chief Executive Officer - Robert Pyle
  • Chief Financial Officer - Kristin Warfel
  • President HCI - Stephen Estok
  • President, Food and Beverage - Kevin Gilligan
  • Chief Technology Officer - Michael Milazzo
  • Chief Human Resources Officer - Lisa Santin
  • General Counsel - Douglas Cassel
  • Robert Pyle - President & Chief Executive Officer

    Robert Pyle, the President & Chief Executive Officer at Graham Packaging, directs the company's overarching strategy and operational execution. Pyle guides the organization's expansion across multiple product categories, including food and beverage, household products, personal care items, and automotive lubricants, ensuring alignment with market demands and corporate objectives. This leadership role involves fostering innovation in custom, value-added, and sustainable packaging solutions, critical for serving both Fortune 500 companies and smaller businesses. By overseeing global operations, Robert Pyle ensures Graham Packaging maintains its position as a leader in blow-molded plastic container design and manufacturing, driving growth and enhancing customer relationships through strategic vision and decisive action. The focus remains on delivering safe, attractive, and convenient containers that meet the needs of modern consumers and support the success of the world's biggest brands.
    Robert Pyle

    Kristin Warfel - Chief Financial Officer

    Kristin Warfel, the Chief Financial Officer at Graham Packaging, manages the company's financial health and strategic fiscal planning. Warfel oversees all financial operations, including budgeting, forecasting, and capital allocation, ensuring robust financial performance across the organization's diverse product lines. This critical role involves optimizing financial strategies to support Graham Packaging's commitment to delivering customized, value-added, and sustainable packaging solutions. By directing financial resources effectively, Kristin Warfel enables the company to invest in innovative design and engineering, thereby meeting the demands of modern consumers and maintaining strong relationships with Fortune 500 companies and independent businesses alike. Warfel's leadership ensures financial stability and supports the company's growth initiatives in the competitive global market for blow-molded plastic containers.
    Kristin Warfel

    Stephen Estok - President HCI

    Stephen Estok, the President HCI at Graham Packaging, directs the strategic operations and business development for the Health, Care, and Industrial division. Estok focuses on enhancing the company's portfolio of customized blow-molded plastic containers tailored for these specific market segments. This leadership role involves driving innovation in value-added and sustainable packaging solutions that meet the unique demands of healthcare, personal care, and industrial product categories. By overseeing key operational functions, Stephen Estok ensures Graham Packaging consistently delivers safe, attractive, and convenient containers, supporting both large-scale clients and independent businesses. Estok's strategic direction is vital for maintaining Graham Packaging's competitive edge and expanding its market presence within these critical sectors.
    Stephen Estok

    Kevin Gilligan - President, Food and Beverage

    Kevin Gilligan, the President, Food and Beverage at Graham Packaging, leads the strategic direction and operational execution for the company's significant food and beverage packaging division. Gilligan oversees the development and delivery of customized, value-added, and sustainable blow-molded plastic containers specifically designed for this sector. This role is critical in ensuring that Graham Packaging meets the stringent safety, quality, and aesthetic requirements of food and beverage brands, supporting their market presence and consumer appeal. By focusing on innovative design and engineering, Kevin Gilligan drives the creation of attractive and convenient packaging solutions that cater to modern consumer preferences. Gilligan's leadership ensures Graham Packaging maintains its strong partnerships with leading food and beverage companies, reinforcing its position as a key supplier in this dynamic market.
    Kevin Gilligan

    Michael Milazzo - Chief Technology Officer

    Michael Milazzo, the Chief Technology Officer at Graham Packaging, spearheads the company's technological innovation and infrastructure development. Milazzo directs the integration of advanced technologies in the design and manufacturing processes for blow-molded plastic containers, ensuring Graham Packaging remains at the forefront of the industry. This leadership position involves driving the engineering of custom, value-added, and sustainable packaging solutions that cater to evolving consumer needs and market trends across food and beverage, household products, personal care, and automotive lubricants. By championing technological advancements, Michael Milazzo enhances the efficiency, safety, and attractiveness of the containers produced, supporting both large corporations and smaller enterprises. Milazzo's expertise ensures Graham Packaging consistently delivers innovative and high-quality packaging solutions, reinforcing its global leadership.
    Michael Milazzo

    Lisa Santin - Chief Human Resources Officer

    Lisa Santin, the Chief Human Resources Officer at Graham Packaging, leads the strategic development and execution of human capital initiatives. Santin oversees talent acquisition, employee development, and organizational culture, ensuring a skilled and motivated workforce capable of driving innovation in customized blow-molded plastic container solutions. This role is pivotal in supporting Graham Packaging's mission to provide value-added and sustainable packaging across diverse sectors, including food and beverage, household products, personal care, and automotive lubricants. By fostering a supportive and dynamic work environment, Lisa Santin enhances employee engagement and retention, which is crucial for maintaining operational excellence and meeting the demands of Fortune 500 companies and independent businesses. Santin's leadership ensures the company's human resources align with its strategic goals for growth and market leadership.
    Lisa Santin

    Douglas Cassel - General Counsel

    Douglas Cassel, the General Counsel at Graham Packaging, provides comprehensive legal guidance and oversees all legal affairs for the organization. Cassel manages corporate governance, compliance, and risk mitigation, ensuring that Graham Packaging operates within all applicable legal frameworks while pursuing its objectives in designing and manufacturing customized blow-molded plastic containers. This position is essential for safeguarding the company's interests as it serves diverse industries, including food and beverage, household products, personal care, and automotive lubricants, with value-added and sustainable packaging solutions. By ensuring legal integrity, Douglas Cassel supports the company's ability to innovate and meet the stringent requirements of Fortune 500 clients and smaller businesses. Cassel's counsel is critical for maintaining the company's reputation and facilitating its continued growth and market leadership.

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    Frequently Asked Questions Regarding Graham Packaging Top Executives and Leadership Team

    Who leads Graham Packaging?
    Graham Packaging is led by Robert Pyle (President & Chief Executive Officer), along with executives such as Kristin Warfel (Chief Financial Officer) and Stephen Estok (President HCI).
    Who is part of Graham Packaging’s executive team?
    The executive team of Graham Packaging includes leaders such as Robert Pyle (President & Chief Executive Officer), Kristin Warfel (Chief Financial Officer), Stephen Estok (President HCI) and other senior executives.
    How many executives does Graham Packaging have?
    Graham Packaging has 7 executives leading key business areas.
    What roles are included in Graham Packaging’s leadership team?
    The leadership team of Graham Packaging includes roles such as President & Chief Executive Officer, Chief Financial Officer, President HCI, President, Food and Beverage, Chief Technology Officer.