Hartree Partners Executive and Leadership Team

June, 2026

Leadership Overview

Hartree Partners has 5 executives leading key functions including strategy, trading, technology, finance, and operations.

Driven by a commitment to identifying value, Hartree Partners specializes in energy commodities, anticipating market shifts across the supply chain to deliver strategic advantage and foster global trade.

Leadership Roles at Hartree Partners

  • Chief Executive Officer - Noel Longden
  • Chief Financial Officer - Kalyan Popuri
  • Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco - John Tonielli
  • Chief Technology Officer - Glenn Shaw
  • Founding Managing Director - Guy Merison
  • Noel Longden - Chief Executive Officer

    Noel Longden, the Chief Executive Officer at Hartree Partners, directs the firm's overarching strategy and global operations. Longden guides the executive team in identifying and capitalizing on opportunities within the energy and commodities markets, ensuring alignment with the company's core mission of value discovery across production, refinement, transportation, and consumption. This leadership role involves fostering innovation and maintaining the firm's competitive edge in a dynamic global landscape. Overseeing the strategic direction, Noel Longden ensures that Hartree Partners consistently anticipates market needs and delivers exceptional results for stakeholders. The Chief Executive Officer's focus remains on sustainable growth and expanding the firm's international presence through astute market analysis and operational excellence.

    Kalyan Popuri - Chief Financial Officer

    Kalyan Popuri, the Chief Financial Officer at Hartree Partners, manages the firm's financial operations and strategic fiscal planning. Popuri oversees all aspects of financial reporting, risk management, and capital allocation, ensuring the financial health and stability of the global commodities merchant firm. This role is critical in supporting Hartree Partners' specialized focus on energy and associated industries, providing financial insights that drive value identification across the commodity supply chain. The Chief Financial Officer's expertise is essential for anticipating market opportunities and managing financial exposures effectively. Kalyan Popuri ensures compliance with financial regulations and works closely with leadership to support the firm's growth objectives and maintain strong relationships with investors and financial partners.

    John Tonielli - Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco

    John Tonielli, the Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco at Hartree Partners, directs the firm's extensive trading and asset operations globally. Tonielli oversees the execution of trading strategies and the management of commodity assets, ensuring seamless integration across Hartree Partners' eleven international offices. This leadership position is pivotal in identifying and capitalizing on value within the production, refinement, transportation, and consumption of energy commodities. The Global Chief Operating Officer's focus includes optimizing operational efficiency and mitigating risks associated with market volatility. John Tonielli ensures that trading and asset operations align with the firm's overarching mission to anticipate opportunities and deliver superior performance in the global commodities market.

    Glenn Shaw - Chief Technology Officer

    Glenn Shaw, the Chief Technology Officer at Hartree Partners, architects and executes the firm's technology strategy. Shaw oversees the development and implementation of advanced technological solutions that support Hartree Partners' global commodities trading and asset operations. This involves ensuring robust, scalable, and secure IT infrastructure across all eleven international offices. The Chief Technology Officer's responsibilities include leveraging data analytics and digital innovation to enhance market analysis, optimize trading processes, and identify under- or over-valued opportunities within the commodity supply chain. Glenn Shaw drives technological advancements that provide a competitive advantage, ensuring operational efficiency and supporting the firm's mission to anticipate market shifts and deliver value in the energy sector.

    Guy Merison - Founding Managing Director

    Guy Merison, the Founding Managing Director at Hartree Partners, provides foundational leadership and strategic direction. Merison's extensive experience shapes the firm's approach to identifying value in tradable commodities, particularly within the energy sector and its associated industries. This role involves overseeing key initiatives that anticipate opportunities in the supply chain, ensuring the firm remains agile and responsive to market fluctuations. As a founding partner, Guy Merison contributes significantly to the company's long-term vision and its operational philosophy. The Founding Managing Director's influence extends to guiding investment strategies and maintaining strong relationships with partners and stakeholders, reinforcing Hartree Partners' position as a global merchant commodities firm.

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    Frequently Asked Questions Regarding Hartree Partners Top Executives and Leadership Team

    Who leads Hartree Partners?
    Hartree Partners is led by Noel Longden (Chief Executive Officer), along with executives such as Kalyan Popuri (Chief Financial Officer) and John Tonielli (Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco).
    Who is part of Hartree Partners’s executive team?
    The executive team of Hartree Partners includes leaders such as Noel Longden (Chief Executive Officer), Kalyan Popuri (Chief Financial Officer), John Tonielli (Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco) and other senior executives.
    How many executives does Hartree Partners have?
    Hartree Partners has 5 executives leading key business areas.
    What roles are included in Hartree Partners’s leadership team?
    The leadership team of Hartree Partners includes roles such as Chief Executive Officer, Chief Financial Officer, Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco, Chief Technology Officer, Founding Managing Director.