TPC Group Executive and Leadership Team

May, 2026

Leadership Overview

TPC Group has 8 executives leading key functions including strategy, operations, finance, and technical development.

Driven by innovation, TPC Group is dedicated to producing value-added petrochemical products and providing essential infrastructure and logistics services across the Gulf Coast, shaping the future of the chemical industry.

Leadership Roles at TPC Group

  • Chief Executive Officer - Edward Dineen
  • Chairman & Chief Executive Officer - Michael McDonnell
  • Founder & Chief Executive Officer - Carlos Alencastre
  • Chief Financial Officer - Daniel Valenzuela
  • Chief Operating Officer - Efrain Perez
  • President - Peter Troiano
  • President - Todd Knowles
  • President & Chief Technical Officer - Andy Felschow
  • Edward Dineen - Chief Executive Officer

    Edward Dineen, the Chief Executive Officer at TPC Group, directs the company's overall strategic vision and operational execution. Dineen guides TPC Group's commitment to producing value-added products from petrochemical raw materials, focusing on C4 hydrocarbons. Overseeing all executive functions, Edward Dineen ensures alignment with the company's mission to provide critical infrastructure and logistics services along the Gulf Coast. This leadership role involves driving market expansion and optimizing resource allocation to enhance profitability and sustainability. Dineen's strategic direction supports TPC Group's long-standing legacy, established in 1943, by fostering innovation and operational excellence. The Chief Executive Officer's purview extends to all aspects of the business, ensuring robust performance and stakeholder value.

    Michael McDonnell - Chairman & Chief Executive Officer

    Michael McDonnell, the Chairman & Chief Executive Officer at TPC Group, presides over the company's strategic direction and governance. McDonnell's leadership encompasses the full spectrum of TPC Group's operations, from the production of value-added products derived from C4 hydrocarbons to the provision of essential infrastructure and logistics services along the Gulf Coast. As Chairman, Michael McDonnell ensures robust corporate governance and long-term strategic planning, guiding the organization's trajectory. The Chief Executive Officer's responsibilities include driving growth initiatives and maintaining TPC Group's competitive edge in the petrochemical sector. McDonnell's dual role signifies a deep commitment to the company's mission and its continued success since its founding in 1943.

    Carlos Alencastre - Founder & Chief Executive Officer

    Carlos Alencastre, the Founder & Chief Executive Officer at TPC Group, established the company's foundational principles and continues to shape its strategic trajectory. Alencastre's vision drives TPC Group's core business: the production of value-added products from petrochemical raw materials, specifically C4 hydrocarbons. As Founder, Carlos Alencastre instills a culture of innovation and operational excellence that permeates the organization. The Chief Executive Officer's role involves overseeing all facets of the business, including the critical infrastructure and logistics services provided along the Gulf Coast. Alencastre's enduring leadership ensures TPC Group remains a key player in the chemical industry, upholding its legacy since its inception.

    Daniel Valenzuela - Chief Financial Officer

    Daniel Valenzuela, the Chief Financial Officer at TPC Group, directs all financial operations and strategic financial planning. Valenzuela manages the company's fiscal health, overseeing budgeting, forecasting, and capital allocation to support TPC Group's production of value-added petrochemical products and its provision of critical infrastructure and logistics services along the Gulf Coast. The Chief Financial Officer's responsibilities include ensuring financial compliance, optimizing investment strategies, and driving profitability. Daniel Valenzuela plays a pivotal role in securing the financial stability necessary for TPC Group's continued growth and operational excellence. This executive function is crucial for maintaining investor confidence and supporting the company's long-term objectives.
    Daniel Valenzuela

    Efrain Perez - Chief Operating Officer

    Efrain Perez, the Chief Operating Officer at TPC Group, oversees the company's day-to-day operational activities and execution of production strategies. Perez directs the efficient manufacturing of value-added products derived from petrochemical raw materials, focusing on C4 hydrocarbons, and manages the critical infrastructure and logistics services along the Gulf Coast. The Chief Operating Officer's purview includes optimizing production processes, ensuring supply chain efficiency, and maintaining high standards of safety and environmental compliance. Efrain Perez's leadership ensures that TPC Group's operational capabilities consistently meet market demands and strategic objectives. This executive function is vital for the seamless delivery of TPC Group's products and services.

    Peter Troiano - President

    Peter Troiano, the President at TPC Group, leads significant business segments and drives strategic initiatives across the organization. Troiano's focus includes advancing TPC Group's market position in the production of value-added products derived from petrochemical raw materials, such as C4 hydrocarbons. As President, Peter Troiano collaborates with other executive leaders to enhance the company's critical infrastructure and logistics services along the Gulf Coast. This leadership role involves spearheading growth opportunities, fostering key partnerships, and ensuring operational alignment with the company's overarching mission. Troiano's contributions are essential to TPC Group's sustained success and competitive advantage in the chemical industry.

    Todd Knowles - President

    Todd Knowles, the President at TPC Group, directs key strategic operations and business development initiatives. Knowles is instrumental in expanding TPC Group's capabilities in producing value-added products from petrochemical raw materials, particularly C4 hydrocarbons. As President, Todd Knowles works to strengthen the company's critical infrastructure and logistics services along the Gulf Coast, ensuring seamless delivery and operational efficiency. This executive position involves driving innovation, managing complex projects, and fostering cross-functional collaboration to achieve corporate objectives. Knowles's leadership is critical to TPC Group's ongoing commitment to excellence and market leadership.

    Andy Felschow - President & Chief Technical Officer

    Andy Felschow, the President & Chief Technical Officer at TPC Group, leads the company's technological innovation and operational advancements. Felschow directs research and development efforts focused on enhancing the production of value-added products derived from petrochemical raw materials, such as C4 hydrocarbons. As Chief Technical Officer, Andy Felschow ensures that TPC Group's technological infrastructure and processes are state-of-the-art, supporting the company's critical infrastructure and logistics services along the Gulf Coast. This dual role involves driving technical strategy, overseeing product development, and maintaining the highest standards of operational efficiency and safety. Felschow's expertise is crucial for TPC Group's competitive edge and future growth.
    Andy Felschow

    Frequently Asked Questions Regarding TPC Group Top Executives and Leadership Team

    Who leads TPC Group?
    TPC Group is led by Edward Dineen (Chief Executive Officer), along with executives such as Michael McDonnell (Chairman & Chief Executive Officer) and Carlos Alencastre (Founder & Chief Executive Officer).
    Who is part of TPC Group’s executive team?
    The executive team of TPC Group includes leaders such as Edward Dineen (Chief Executive Officer), Michael McDonnell (Chairman & Chief Executive Officer), Carlos Alencastre (Founder & Chief Executive Officer) and other senior executives.
    How many executives does TPC Group have?
    TPC Group has 8 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 Chief Executive Officer, Chairman & Chief Executive Officer, Founder & Chief Executive Officer, Chief Financial Officer, Chief Operating Officer.