Hartree Executive and Leadership Team

July, 2026

Leadership Overview

Hartree Partners has 4 executives leading key functions including strategy, technology, finance, and operations.

Driven by a commitment to identifying value, [[Hartree Partners]] specializes in energy commodities, anticipating opportunities across the supply chain to deliver exceptional results in production, refinement, transportation, and consumption.

Leadership Roles at Hartree

  • 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
  • Kalyan Popuri - Chief Financial Officer

    Kalyan Popuri, the Chief Financial Officer at Hartree Partners, manages the firm's financial health and strategic capital allocation. Popuri oversees all financial planning, reporting, and risk management activities, ensuring robust fiscal discipline across global operations. This executive's responsibilities include optimizing financial performance, managing relationships with capital providers, and supporting investment strategies that align with Hartree Partners' core business of merchant commodities. Driving financial excellence, Kalyan Popuri ensures the firm's resources are effectively deployed to capitalize on opportunities in energy and associated industries. The CFO's strategic financial guidance is essential for sustaining the firm's growth and market leadership.

    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 execution of the firm's trading strategies and asset management operations. Tonielli oversees the day-to-day activities that drive value in the production, refinement, transportation, and consumption of energy commodities. This critical role ensures operational efficiency and risk mitigation across all global trading desks and asset portfolios. John Tonielli's leadership is fundamental to capitalizing on market opportunities and maintaining the integrity of Hartree Partners' extensive supply chain operations. By optimizing trading and asset operations, Tonielli directly supports the firm's objective of identifying and realizing value in the commodities market.

    Glenn Shaw - Chief Technology Officer

    Glenn Shaw, the Chief Technology Officer at Hartree Partners, architects the firm's technological infrastructure and digital strategy. Shaw drives innovation by implementing advanced systems that support the complex trading and asset operations inherent in the commodities market. This leadership role ensures that Hartree Partners leverages cutting-edge technology to enhance efficiency, manage risk, and identify new value propositions within the energy sector. Overseeing all technology initiatives, Glenn Shaw ensures seamless integration of digital solutions across the company's global operations. The CTO's focus on technological advancement is critical for maintaining Hartree Partners' competitive advantage and adapting to the evolving landscape of commodity trading and finance.

    Guy Merison - Founding Managing Director

    Guy Merison, the Founding Managing Director at Hartree Partners, directs the firm's overarching strategy and operational framework. Merison's leadership guides the identification of value across the entire commodity supply chain, from production and refinement to transportation and consumption. This involves anticipating market shifts and capitalizing on opportunities where tradable commodities may be under- or over-valued. Overseeing global operations, Merison ensures the firm's eleven offices worldwide function cohesively. The strategic vision established by Guy Merison underpins Hartree Partners' position as a leading merchant commodities firm, driving consistent growth and market impact. This executive role is central to maintaining the firm's competitive edge and fostering innovation in energy and associated industries.

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    Frequently Asked Questions Regarding Hartree Top Executives and Leadership Team

    Who leads Hartree?
    Hartree is led by Kalyan Popuri (Chief Financial Officer), along with executives such as John Tonielli (Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco) and Glenn Shaw (Chief Technology Officer).
    Who is part of Hartree’s executive team?
    The executive team of Hartree includes leaders such as Kalyan Popuri (Chief Financial Officer), John Tonielli (Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco), Glenn Shaw (Chief Technology Officer) and other senior executives.
    How many executives does Hartree have?
    Hartree has 4 executives leading key business areas.
    What roles are included in Hartree’s leadership team?
    The leadership team of Hartree includes roles such as Chief Financial Officer, Global Chief Operating Officer, Head of Trading & Asset Operations, Hartree Holdco, Chief Technology Officer, Founding Managing Director.