Post Holdings Executive and Leadership Team

August, 2026

Leadership Overview

Post Holdings has 4 executives leading key functions including human resources, financial strategy, operational management, and administrative governance.

Focused on delivering high-quality consumer packaged goods, Post Holdings maintains a commitment to operational excellence and market expansion across diverse food categories, ensuring long-term value creation for stakeholders through a robust portfolio of branded and private label products.

Leadership Roles at Post Holdings

  • Chief Financial Officer & Treasurer - Matt Mainer
  • Executive VP & Chief Operating Officer - Nicolas Catoggio
  • Chief Human Resources Officer - Karen Little
  • Executive VP, General Counsel & Chief Administrative Officer - Diedre Gray
  • Matt Mainer - Chief Financial Officer & Treasurer

    Matt Mainer, the Chief Financial Officer & Treasurer at Post Holdings, manages the financial health, capital allocation, and treasury operations for the entire holding company. By overseeing fiscal planning and reporting, the Chief Financial Officer & Treasurer ensures the stability of the diverse portfolio, which includes egg products, peanut butter, and pet food categories. Mainer directs investor relations and capital market activities to support strategic growth initiatives and acquisitions. The Chief Financial Officer & Treasurer maintains rigorous internal controls and risk management frameworks to protect shareholder value. Matt Mainer coordinates with the Board to optimize the balance sheet and drive long-term financial performance across North American and international markets. Through precise financial analysis and strategic budgeting, the Chief Financial Officer & Treasurer enables the company to scale operations effectively. This leadership role remains central to maintaining the financial agility required to navigate the complexities of the global food manufacturing industry.

    Nicolas Catoggio - Executive VP & Chief Operating Officer

    Nicolas Catoggio, the Executive VP & Chief Operating Officer at Post Holdings, directs the day-to-day manufacturing, supply chain, and distribution logistics for the company's extensive food product portfolio. By optimizing production efficiency across ready-to-eat cereals and refrigerated food facilities, the Executive VP & Chief Operating Officer ensures consistent product quality and market availability. Catoggio oversees the integration of new acquisitions into the existing operational framework to maximize synergies and reduce overhead costs. The Executive VP & Chief Operating Officer drives continuous improvement initiatives that enhance manufacturing output and sustainability across all business units. Nicolas Catoggio manages large-scale operational teams to meet the demands of both branded and private label customers. Through strategic oversight of the supply chain, the Executive VP & Chief Operating Officer mitigates operational risks and supports the company's growth objectives. This role remains vital for maintaining the competitive edge of the organization within the global consumer packaged goods market.
    Nicolas Catoggio

    Karen Little - Chief Human Resources Officer

    Karen Little, the Chief Human Resources Officer at Post Holdings, directs all talent acquisition, organizational development, and employee engagement initiatives across the global enterprise. By architecting comprehensive workforce strategies, the Chief Human Resources Officer ensures alignment between human capital and the broader business objectives of manufacturing and distributing diverse food products. Little oversees the implementation of performance management systems that drive productivity within the refrigerated foods and cereal divisions. Collaborating closely with the executive leadership team, the Chief Human Resources Officer fosters a culture of innovation and operational efficiency. Karen Little manages complex labor relations and compensation structures to attract top-tier talent in the competitive consumer packaged goods sector. Through these efforts, the Chief Human Resources Officer strengthens the organizational foundation, supporting the company's mission to deliver quality food products to consumers worldwide while maintaining high standards of corporate governance and workplace excellence.
    Karen Little

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

    Diedre Gray, the Executive VP, General Counsel & Chief Administrative Officer at Post Holdings, directs all legal affairs, corporate compliance, and administrative functions for the organization. By providing strategic legal guidance on mergers, acquisitions, and regulatory matters, the Executive VP, General Counsel & Chief Administrative Officer ensures the company operates within the complex legal frameworks governing the food industry. Gray oversees corporate governance policies and manages the legal risks associated with the diverse portfolio of branded and private label products. The Executive VP, General Counsel & Chief Administrative Officer coordinates with the Board to uphold ethical standards and transparency across all business operations. Diedre Gray leads administrative initiatives that streamline internal processes and support the overall efficiency of the holding company. Through meticulous oversight of legal and administrative protocols, the Executive VP, General Counsel & Chief Administrative Officer protects the company's reputation and facilitates the successful execution of long-term 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 Matt Mainer (Chief Financial Officer & Treasurer), along with executives such as Nicolas Catoggio (Executive VP & Chief Operating Officer) and Karen Little (Chief Human Resources Officer).
    Who is part of Post Holdings’s executive team?
    The executive team of Post Holdings includes leaders such as Matt Mainer (Chief Financial Officer & Treasurer), Nicolas Catoggio (Executive VP & Chief Operating Officer), Karen Little (Chief Human Resources Officer) and other senior executives.
    How many executives does Post Holdings have?
    Post Holdings has 4 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 Human Resources Officer, Executive VP, General Counsel & Chief Administrative Officer.