Zep Executive and Leadership Team

May, 2026

Leadership Overview

Zep has 7 executives leading key functions including strategy, technology, human resources, operations, and global sales.

Driven by innovation, Zep is dedicated to providing high-performance cleaning, maintenance, and protective products for professional users and consumers, ensuring quality results across diverse applications and industries.

Leadership Roles at Zep

  • Chief Executive Officer - Timothy Feast
  • President - Liliana Di Marco
  • AFCO President - John McKenzie
  • President, Operations (West) - Ralph Puertas
  • Global President & Executive VP - William Moody
  • Chief Technology Officer - Philip Thonhauser
  • Chief Human Resources Officer - Shari Lotz
  • Timothy Feast - Chief Executive Officer

    Timothy Feast, the Chief Executive Officer at Zep, directs the company's overall strategic vision and operational execution. Feast guides Zep's mission to deliver high-performance cleaning, maintenance, and protective products across multiple industries, including transportation, food and beverage, and industrial sectors. This leadership role involves overseeing market expansion, ensuring product innovation aligns with customer needs for both professional users and prosumers. Timothy Feast drives the company's commitment to quality and reliability, solidifying Zep's position as a trusted provider of essential chemical solutions. The Chief Executive Officer's purview encompasses fostering strong relationships with distribution partners and enhancing direct sales channels to maximize market penetration and customer satisfaction.
    Timothy Feast

    Liliana Di Marco - President

    Liliana Di Marco, the President at Zep, drives strategic initiatives and operational excellence across key business segments. Di Marco focuses on enhancing Zep's market presence by ensuring the delivery of high-performance cleaning, maintenance, and protective products to professional users and prosumers. This executive leadership role involves overseeing cross-functional collaboration to optimize product development, sales strategies, and distribution networks. Liliana Di Marco champions Zep's commitment to quality and customer satisfaction, particularly within the transportation, food and beverage, and industrial markets. The President's mandate includes fostering sustainable growth and reinforcing Zep's reputation for reliable and effective chemical solutions.

    John McKenzie - AFCO President

    John McKenzie, the AFCO President at Zep, leads the strategic direction and operational performance of the AFCO division. McKenzie is responsible for driving growth and market penetration for Zep's specialized cleaning, maintenance, and protective products within the AFCO segment. This leadership position involves overseeing sales, product development, and customer relations to ensure alignment with Zep's broader corporate objectives. John McKenzie focuses on enhancing the value proposition for AFCO's target markets, ensuring the delivery of high-performance solutions. The AFCO President's role is crucial in maintaining Zep's competitive edge and expanding its reach through effective channel management and customer engagement.

    Ralph Puertas - President, Operations (West)

    Ralph Puertas, the President, Operations (West) at Zep, directs operational activities and strategic growth across the western regions. Puertas oversees the efficient production, distribution, and delivery of Zep's comprehensive range of high-performance cleaning, maintenance, and protective products. This role is vital for ensuring operational excellence and customer satisfaction within the western territories, serving industries such as transportation, food and beverage, and industrial and institutional markets. Ralph Puertas focuses on optimizing supply chain logistics and enhancing operational efficiency to meet market demands. The President, Operations (West) champions Zep's commitment to quality and reliability, driving performance and supporting the company's expansion efforts in key geographic areas.
    Ralph Puertas

    William Moody - Global President & Executive VP

    William Moody, the Global President & Executive VP at Zep, spearheads international growth and overarching business strategy. Moody directs Zep's global operations, ensuring the consistent delivery of high-performance cleaning, maintenance, and protective products across diverse international markets. This executive leadership position involves fostering strategic partnerships, expanding market reach, and driving revenue growth on a worldwide scale. William Moody oversees the integration of global business units, aligning them with Zep's core mission of providing effective solutions for professional users and prosumers. The Global President & Executive VP's focus includes enhancing Zep's brand presence and operational capabilities across all continents.

    Philip Thonhauser - Chief Technology Officer

    Philip Thonhauser, the Chief Technology Officer at Zep, architects the company's technological roadmap and innovation pipeline. Thonhauser spearheads the development and implementation of advanced chemical formulations and product technologies that define Zep's high-performance offerings. This critical role ensures that Zep's cleaning, maintenance, and protective products meet evolving industry standards and customer demands across transportation, food and beverage, and industrial markets. Philip Thonhauser oversees research and development initiatives, driving the creation of sustainable and effective solutions for professional users and prosumers alike. The Chief Technology Officer's focus extends to leveraging cutting-edge science to enhance product efficacy and expand Zep's competitive advantage in the specialty chemicals sector.

    Shari Lotz - Chief Human Resources Officer

    Shari Lotz, the Chief Human Resources Officer at Zep, cultivates a robust organizational culture and talent management strategy. Lotz directs Zep's human capital initiatives, ensuring the company attracts, develops, and retains a skilled workforce essential for delivering high-performance cleaning, maintenance, and protective products. This leadership position involves shaping employee engagement programs and fostering an environment that supports innovation across all departments, from R&D to sales. Shari Lotz oversees HR operations, aligning talent strategies with Zep's business objectives to support growth in the transportation, food and beverage, and industrial sectors. The Chief Human Resources Officer's responsibilities include championing diversity and inclusion, and ensuring compliance with labor regulations, thereby strengthening Zep's operational foundation.

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    Frequently Asked Questions Regarding Zep Top Executives and Leadership Team

    Who leads Zep?
    Zep is led by Timothy Feast (Chief Executive Officer), along with executives such as Liliana Di Marco (President) and John McKenzie (AFCO President).
    Who is part of Zep’s executive team?
    The executive team of Zep includes leaders such as Timothy Feast (Chief Executive Officer), Liliana Di Marco (President), John McKenzie (AFCO President) and other senior executives.
    How many executives does Zep have?
    Zep has 7 executives leading key business areas.
    What roles are included in Zep’s leadership team?
    The leadership team of Zep includes roles such as Chief Executive Officer, President, AFCO President, President, Operations (West), Global President & Executive VP.