TPC Group Executive and Leadership Team

July, 2026

Leadership Overview

TPC Group has 9 executives leading key functions including strategy, operations, and finance.

Driven by innovation, TPC Group is dedicated to producing value-added petrochemical products and providing critical infrastructure services, shaping the future of the chemical industry through robust operational excellence and strategic market positioning.

Leadership Roles at TPC Group

  • Founder & Chief Executive Officer - Carlos Alencastre
  • Chairman & Chief Executive Officer - Michael McDonnell
  • President & Chief Executive Officer - Edward Dineen
  • Chief Financial Officer - Jennifer Partridge
  • Senior Vice President & Chief Financial Officer - Daniel Valenzuela
  • Chief Operating Officer - Efrain Perez
  • President - Todd Knowles
  • President - Peter Troiano
  • Chief Operations Officer - Jamie Bartels
  • Carlos Alencastre - Founder & Chief Executive Officer

    Carlos Alencastre, the Founder & Chief Executive Officer at TPC Group, architects the overarching corporate strategy and vision. Alencastre guides the company's direction, focusing on long-term growth and market leadership within the petrochemical sector. The Founder & Chief Executive Officer's responsibilities encompass setting strategic objectives, fostering innovation in product development derived from C4 hydrocarbons, and ensuring the company's infrastructure and logistics services align with market demands along the Gulf Coast. This leadership role involves cultivating key stakeholder relationships and driving the company's mission to deliver value-added products. Alencastre's foundational role establishes the core principles for operational excellence and sustainable business practices, directly impacting TPC Group's competitive standing and future trajectory.

    Michael McDonnell - Chairman & Chief Executive Officer

    Michael McDonnell, the Chairman & Chief Executive Officer at TPC Group, directs the company's strategic initiatives and corporate governance. McDonnell oversees the execution of business plans, ensuring alignment with the company's mission to produce value-added petrochemical products and provide essential infrastructure services. The Chairman & Chief Executive Officer's purview includes driving operational efficiency, managing financial performance, and expanding market reach for TPC Group's C4 hydrocarbon derivatives. This executive leadership position involves fostering a culture of safety and compliance across all operations, particularly along the Gulf Coast. McDonnell's strategic oversight is critical for navigating market complexities and securing the company's long-term viability and profitability, reinforcing TPC Group's position as a key industry player.

    Edward Dineen - President & Chief Executive Officer

    Edward Dineen, the President & Chief Executive Officer at TPC Group, spearheads the company's operational execution and strategic growth. Dineen directs all facets of TPC Group's business, from the production of value-added products derived from petrochemical raw materials like C4 hydrocarbons to the provision of critical infrastructure and logistics services. The President & Chief Executive Officer's role involves optimizing operational performance across the Gulf Coast region, ensuring robust supply chain management and efficient resource allocation. Edward Dineen's leadership focuses on enhancing customer value and expanding market opportunities, driving innovation in product development and service delivery. This executive's mandate is to ensure TPC Group maintains its competitive edge and achieves sustained financial success through disciplined execution and strategic foresight.

    Jennifer Partridge - Chief Financial Officer

    Jennifer Partridge, the Chief Financial Officer at TPC Group, directs the company's financial strategy and fiscal management. Partridge oversees all financial operations, including accounting, financial planning, analysis, and reporting, ensuring the fiscal health and stability of the organization. The Chief Financial Officer's role involves managing capital allocation, optimizing financial performance, and supporting strategic decision-making through robust financial insights. Jennifer Partridge plays a key part in securing funding, managing investor relations, and ensuring compliance with financial regulations. This executive leadership is vital for TPC Group's sustained growth and profitability, guiding the company's financial direction in the complex petrochemical market and supporting its infrastructure and logistics services.

    Daniel Valenzuela - Senior Vice President & Chief Financial Officer

    Daniel Valenzuela, the Senior Vice President & Chief Financial Officer at TPC Group, oversees the company's comprehensive financial operations and strategic fiscal planning. Valenzuela manages financial reporting, budgeting, and forecasting, ensuring TPC Group maintains strong financial discipline and achieves its economic objectives. The Senior Vice President & Chief Financial Officer's responsibilities include optimizing capital structure, managing risk, and supporting executive leadership with critical financial analysis for business development and operational improvements. Daniel Valenzuela's expertise is instrumental in guiding TPC Group's financial performance, particularly in relation to its production of value-added petrochemical products and its extensive infrastructure and logistics services along the Gulf Coast.

    Efrain Perez - Chief Operating Officer

    Efrain Perez, the Chief Operating Officer at TPC Group, manages the day-to-day operational activities and ensures the efficient production of value-added products. Perez oversees the company's manufacturing processes, focusing on optimizing the utilization of petrochemical raw materials, particularly C4 hydrocarbons, to maximize output and quality. The Chief Operating Officer's responsibilities extend to the management of critical infrastructure and logistics services along the Gulf Coast, ensuring seamless operations and reliable delivery to customers. Efrain Perez drives initiatives aimed at enhancing operational safety, environmental compliance, and cost-effectiveness across all facilities. This leadership position is crucial for maintaining TPC Group's production capabilities and supporting its strategic growth objectives through superior operational execution.

    Todd Knowles - President

    Todd Knowles, the President at TPC Group, directs strategic business unit operations and drives growth initiatives. Knowles oversees key commercial functions, focusing on maximizing the value derived from TPC Group's petrochemical products and infrastructure services. The President's responsibilities include developing market strategies, fostering customer relationships, and ensuring operational excellence across assigned business segments. Todd Knowles plays a vital role in aligning business unit objectives with the company's overall mission, particularly concerning the production of value-added products from C4 hydrocarbons and the provision of logistics services along the Gulf Coast. This leadership ensures TPC Group's continued success and market competitiveness.

    Peter Troiano - President

    Peter Troiano, the President at TPC Group, leads strategic initiatives focused on enhancing the company's market position and operational capabilities. Troiano oversees critical business functions, driving performance improvements in the production of value-added petrochemical products and the delivery of essential infrastructure and logistics services. The President's role involves spearheading efforts to optimize resource utilization, particularly with C4 hydrocarbons, and ensuring seamless operations along the Gulf Coast. Peter Troiano is dedicated to fostering innovation and maintaining high standards of safety and environmental stewardship. This executive leadership ensures TPC Group effectively meets customer needs and achieves its long-term strategic and financial goals.

    Jamie Bartels - Chief Operations Officer

    Jamie Bartels, the Chief Operations Officer at TPC Group, leads the execution of operational strategies to ensure efficient production and service delivery. Bartels manages the company's manufacturing facilities and logistics networks, focusing on optimizing processes for petrochemical raw materials like C4 hydrocarbons. The Chief Operations Officer's mandate includes enhancing operational safety, driving productivity improvements, and ensuring compliance with environmental standards across all TPC Group operations. Jamie Bartels plays a critical role in managing supply chain dynamics and maintaining the integrity of the company's infrastructure and logistics services along the Gulf Coast. This leadership ensures TPC Group consistently meets market demands for its value-added products.

    Frequently Asked Questions Regarding TPC Group Top Executives and Leadership Team

    Who leads TPC Group?
    TPC Group is led by Carlos Alencastre (Founder & Chief Executive Officer), along with executives such as Michael McDonnell (Chairman & Chief Executive Officer) and Edward Dineen (President & Chief Executive Officer).
    Who is part of TPC Group’s executive team?
    The executive team of TPC Group includes leaders such as Carlos Alencastre (Founder & Chief Executive Officer), Michael McDonnell (Chairman & Chief Executive Officer), Edward Dineen (President & Chief Executive Officer) and other senior executives.
    How many executives does TPC Group have?
    TPC Group has 9 executives leading key business areas.
    What roles are included in TPC Group’s leadership team?
    The leadership team of TPC Group includes roles such as Founder & Chief Executive Officer, Chairman & Chief Executive Officer, President & Chief Executive Officer, Chief Financial Officer, Senior Vice President & Chief Financial Officer.