Post Holdings Executive and Leadership Team

July, 2026

Leadership Overview

Post Holdings has 4 executives leading key functions including operations, finance, human resources, 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 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, manages the company's comprehensive financial strategy and fiscal operations. Mainer oversees all aspects of financial planning, accounting, and treasury functions, ensuring robust financial health and compliance across the organization. This critical role involves guiding investment strategies, managing capital allocation, and maintaining strong relationships with financial institutions to support Post Holdings' growth initiatives. The Chief Financial Officer & Treasurer is instrumental in driving profitability and shareholder value by meticulously analyzing market trends and economic conditions. Matthew Mainer's financial acumen directly supports the company's operations in ready-to-eat cereals, refrigerated foods, foodservice products, nutritional products, and private brand foods, ensuring sustainable financial performance and strategic resource deployment.

    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 across its diverse business segments. Overseeing the manufacturing, marketing, and distribution of both branded and private label food products, Catoggio ensures efficiency and quality throughout the supply chain. This leadership role involves optimizing production processes for ready-to-eat cereals, refrigerated foods, foodservice products, nutritional items, and private brand foods. By driving operational excellence, Nicolas Catoggio supports the company's mission to deliver a wide array of consumer packaged goods. The Chief Operating Officer's focus extends to enhancing the performance of businesses specializing in egg products, cheese, peanut butter, sausage, side dishes, and pet food, thereby solidifying Post Holdings' market presence and driving consistent product availability.
    Nicolas Catoggio

    Karen Little - Chief Human Resources Officer

    Karen Little, the Chief Human Resources Officer at Post Holdings, leads all human capital management initiatives, fostering a dynamic and productive work environment. Little directs talent acquisition, employee development, compensation, and benefits programs across the company's global operations. This executive position focuses on cultivating a strong organizational culture that aligns with Post Holdings' mission of delivering quality food products. The Chief Human Resources Officer plays a key part in ensuring that the company attracts and retains top talent necessary for innovation and operational success in the competitive consumer packaged goods sector. Karen Little's strategic approach to human resources supports the effective management of teams involved in ready-to-eat cereals, refrigerated foods, foodservice products, nutritional products, and private brand foods, driving employee engagement and organizational effectiveness.
    Karen Little

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

    Diedre Gray, the Executive VP, General Counsel & Chief Administrative Officer at Post Holdings, provides strategic legal counsel and oversees critical administrative functions. Gray directs the company's legal affairs, ensuring compliance with all relevant regulations and managing corporate governance. This multifaceted role encompasses managing risk, overseeing litigation, and advising on significant corporate transactions, including mergers and acquisitions. The Chief Administrative Officer also spearheads initiatives to enhance operational efficiency and streamline internal processes across the organization. Diedre Gray's comprehensive oversight supports Post Holdings' diverse business segments, including ready-to-eat cereals, refrigerated foods, foodservice products, nutritional products, and private brand foods, safeguarding the company's legal interests and operational integrity.
    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 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 Matthew 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.