Post Holdings Executive and Leadership Team

June, 2026

Leadership Overview

Post Holdings has 6 executives leading key functions including technology, information systems, human resources, operations, finance, and legal.

Driven by a commitment to excellence, Post Holdings is dedicated to delivering a diverse portfolio of high-quality food products, fostering innovation, and achieving sustainable growth across its global operations.

Leadership Roles at Post Holdings

  • Chief Financial Officer & Treasurer - Matthew Mainer
  • Executive VP & Chief Operating Officer - Nicolas Catoggio
  • Chief Technology Officer & Vice President - Christopher Shepherd
  • Chief Information Officer & Senior VP - Joseph Caro
  • Chief Human Resources Officer - Karen Little
  • Executive VP, General Counsel & Chief Administrative Officer - Diedre Gray
  • Matthew Mainer - Chief Financial Officer & Treasurer

    Matthew Mainer, the Chief Financial Officer & Treasurer at Post Holdings, oversees all financial operations, strategic planning, and capital management. Mainer is responsible for the financial health and integrity of Post Holdings, guiding its investment strategies and ensuring fiscal discipline across its diverse consumer packaged goods businesses. This executive role involves managing financial reporting, investor relations, treasury functions, and risk management to support sustainable growth. The Chief Financial Officer & Treasurer plays a pivotal part in evaluating potential mergers and acquisitions, as well as optimizing the company's capital structure. Matthew Mainer's strategic financial guidance is crucial for driving profitability and shareholder value in categories ranging from refrigerated foods to private brand items. By maintaining robust financial controls and forward-looking fiscal strategies, Mainer ensures Post Holdings' long-term stability and competitive positioning.

    Nicolas Catoggio - Executive VP & Chief Operating Officer

    Nicolas Catoggio, the Executive VP & Chief Operating Officer at Post Holdings, directs the company's extensive operational activities and supply chain management. Catoggio oversees the day-to-day execution of manufacturing, distribution, and logistics for Post Holdings' diverse portfolio, which includes well-known brands in cheese, peanut butter, and pet food. This leadership position involves optimizing production efficiencies, ensuring product quality, and driving cost-effectiveness across all operating segments. The Executive VP & Chief Operating Officer plays a key part in integrating new acquisitions and standardizing operational best practices to enhance overall business performance. Nicolas Catoggio's responsibilities extend to managing relationships with key suppliers and ensuring the seamless flow of goods from production to market. By focusing on operational excellence, Catoggio supports Post Holdings' mission to deliver high-quality consumer packaged goods worldwide.
    Nicolas Catoggio

    Christopher Shepherd - Chief Technology Officer & Vice President

    Christopher Shepherd, the Chief Technology Officer & Vice President at Post Holdings, directs the company's technological infrastructure and innovation strategy. Shepherd oversees the development and implementation of advanced technology solutions that support Post Holdings' diverse consumer packaged goods operations, including its ready-to-eat cereals, refrigerated foods, and private brand food businesses. This leadership role involves architecting scalable IT systems to enhance operational efficiency and drive product development across the company's portfolio. Shepherd's focus extends to leveraging emerging technologies to optimize manufacturing processes and supply chain management, ensuring Post Holdings maintains a competitive edge in the global food market. The Chief Technology Officer & Vice President also guides the integration of digital tools to improve customer engagement and expand market reach for iconic brands. By championing technological advancements, Christopher Shepherd ensures the company's digital transformation aligns with its core mission of delivering quality food products worldwide.

    Joseph Caro - Chief Information Officer & Senior VP

    Joseph Caro, the Chief Information Officer & Senior VP at Post Holdings, manages the enterprise-wide information systems and digital strategy. Caro is responsible for the oversight of all IT operations, ensuring robust and secure data management across Post Holdings' various business segments, which span from nutritional products to foodservice items. This executive position involves aligning technology investments with business objectives to support growth and operational excellence. The Chief Information Officer & Senior VP drives initiatives to enhance data analytics capabilities, enabling better decision-making for product innovation and market expansion. Caro's purview includes managing the company's IT infrastructure, cybersecurity protocols, and the implementation of enterprise resource planning systems. By optimizing information flow and digital platforms, Joseph Caro strengthens Post Holdings' ability to serve its customers effectively and maintain its position as a leading consumer packaged goods provider.

    Karen Little - Chief Human Resources Officer

    Karen Little, the Chief Human Resources Officer at Post Holdings, leads all aspects of human capital management and organizational development. Little is instrumental in shaping the company's culture and ensuring a talented workforce supports Post Holdings' extensive operations in branded and private label food products. This critical role involves developing and executing strategies for talent acquisition, employee engagement, compensation, and benefits across the global organization. The Chief Human Resources Officer champions initiatives that foster diversity, inclusion, and professional growth, aligning human resources practices with the company's strategic goals. Karen Little oversees the implementation of HR policies and programs that enhance productivity and support the integration of acquired businesses. By focusing on people as a key asset, Little drives employee satisfaction and retention, which is vital for sustaining Post Holdings' market leadership in categories like breakfast cereals and egg products.
    Karen Little

    Diedre Gray - Executive VP, General Counsel & Chief Administrative Officer

    Diedre Gray, the Executive VP, General Counsel & Chief Administrative Officer at Post Holdings, leads the company's legal affairs, corporate governance, and administrative functions. Gray provides strategic legal counsel and ensures compliance with all regulatory requirements across Post Holdings' global operations in branded and private label food products. This comprehensive role involves overseeing litigation, intellectual property, corporate law, and government relations to safeguard the company's interests. The Executive VP, General Counsel & Chief Administrative Officer also manages key administrative departments, ensuring efficient business operations and supporting the executive leadership team. Diedre Gray's expertise is vital in navigating complex legal landscapes and maintaining the highest standards of corporate ethics and governance. By providing robust legal and administrative oversight, Gray supports Post Holdings' mission to deliver quality food products and achieve its strategic objectives.
    Diedre Gray

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    Frequently Asked Questions Regarding Post Holdings Top Executives and Leadership Team

    Who leads Post Holdings?
    Post Holdings is led by Matthew Mainer (Chief Financial Officer & Treasurer), along with executives such as Nicolas Catoggio (Executive VP & Chief Operating Officer) and Christopher Shepherd (Chief Technology Officer & Vice President).
    Who is part of Post Holdings’s executive team?
    The executive team of Post Holdings includes leaders such as Matthew Mainer (Chief Financial Officer & Treasurer), Nicolas Catoggio (Executive VP & Chief Operating Officer), Christopher Shepherd (Chief Technology Officer & Vice President) and other senior executives.
    How many executives does Post Holdings have?
    Post Holdings has 6 executives leading key business areas.
    What roles are included in Post Holdings’s leadership team?
    The leadership team of Post Holdings includes roles such as Chief Financial Officer & Treasurer, Executive VP & Chief Operating Officer, Chief Technology Officer & Vice President, Chief Information Officer & Senior VP, Chief Human Resources Officer.