TPC Group Executive and Leadership Team

September, 2026

Leadership Overview

TPC Group has 8 executives leading key functions including strategy, operations, finance, and regional management.

Focused on petrochemical innovation, TPC Group delivers value-added products and critical logistics services across the Gulf Coast while maintaining a commitment to operational excellence and sustainable industrial growth.

Leadership Roles at TPC Group

  • Chairman & Chief Executive Officer - Michael McDonnell
  • President & Chief Executive Officer - Edward Dineen
  • Founder & Chief Executive Officer - Carlos Alencastre
  • Chief Financial Officer - Carl Struck
  • Senior Vice President & Chief Financial Officer - Daniel Valenzuela
  • Chief Operating Officer - Efrain Perez
  • President - Todd Knowles
  • President - Peter Troiano
  • Michael McDonnell - Chairman & Chief Executive Officer

    Michael McDonnell, the Chairman & Chief Executive Officer at TPC Group, directs the overarching corporate strategy for petrochemical production. Overseeing long-term growth initiatives, the Chairman & Chief Executive Officer ensures alignment between market demand for C4 hydrocarbons and internal manufacturing capabilities. This leadership role involves constant engagement with the Board to refine capital allocation and risk management frameworks. By prioritizing safety and operational efficiency, Michael McDonnell drives the organization toward sustained profitability within the competitive Gulf Coast chemical sector. McDonnell maintains a focus on high-value product development, ensuring the company remains a leader in the petrochemical landscape. Through rigorous oversight of corporate governance, the Chairman & Chief Executive Officer secures the stability of the enterprise. Ultimately, McDonnell fosters a culture of innovation that supports the broader mission of delivering essential chemical solutions to global industrial partners.

    Edward Dineen - President & Chief Executive Officer

    Edward Dineen, the President & Chief Executive Officer at TPC Group, manages daily business operations and strategic execution. Overseeing the integration of petrochemical raw materials into value-added products, the President & Chief Executive Officer optimizes production workflows to maximize output. This leadership role requires close collaboration with department heads to streamline logistics services across the Gulf Coast region. By implementing advanced manufacturing protocols, Edward Dineen enhances the efficiency of the entire supply chain. Dineen monitors performance metrics to ensure the company meets rigorous quality standards while maintaining cost-effectiveness. Through the management of complex industrial assets, the President & Chief Executive Officer drives the company toward achieving its annual production targets. Ultimately, Dineen strengthens the market position of the organization by aligning operational output with the evolving needs of the chemical industry and its diverse customer base.

    Carlos Alencastre - Founder & Chief Executive Officer

    Carlos Alencastre, the Founder & Chief Executive Officer at TPC Group, architects the vision for long-term market expansion and technological advancement. Overseeing the strategic direction of the company, the Founder & Chief Executive Officer identifies emerging opportunities within the petrochemical sector to diversify the product portfolio. This leadership role involves fostering relationships with key industry stakeholders to secure the future of the organization. By championing research and development, Carlos Alencastre drives the creation of new value-added products derived from C4 hydrocarbons. Alencastre ensures the company maintains a competitive edge through continuous improvement of infrastructure and logistics capabilities. Through the cultivation of a forward-thinking corporate culture, the Founder & Chief Executive Officer aligns the workforce with the core mission of industrial excellence. Ultimately, Alencastre secures the legacy of the firm by balancing immediate operational needs with a commitment to long-term growth and sustainability.

    Carl Struck - Chief Financial Officer

    Carl Struck, the Chief Financial Officer at TPC Group, directs the financial planning, reporting, and treasury functions of the organization. Overseeing the capital structure and investment strategies, the Chief Financial Officer ensures the company maintains the liquidity necessary to support large-scale petrochemical operations. This leadership role involves managing relationships with lenders and investors to secure funding for infrastructure projects. By analyzing market trends and cost structures, Carl Struck drives financial discipline across all departments. Struck monitors cash flow and budgetary compliance to ensure the company achieves its profitability targets. Through the development of comprehensive financial models, the Chief Financial Officer provides the data necessary for strategic decision-making at the executive level. Ultimately, Struck safeguards the financial health of the firm by mitigating fiscal risks and optimizing the allocation of resources to support the core business model.

    Daniel Valenzuela - Senior Vice President & Chief Financial Officer

    Daniel Valenzuela, the Senior Vice President & Chief Financial Officer at TPC Group, manages the accounting operations and tax strategy for the enterprise. Overseeing the internal audit processes, the Senior Vice President & Chief Financial Officer ensures that all financial reporting adheres to regulatory standards. This leadership role involves coordinating with the finance team to streamline payroll, procurement, and expense management systems. By implementing advanced financial software, Daniel Valenzuela drives improvements in data accuracy and reporting speed. Valenzuela works closely with the executive team to evaluate the financial impact of potential mergers or acquisitions within the chemical industry. Through the management of corporate insurance and risk assessment, the Senior Vice President & Chief Financial Officer protects the assets of the company. Ultimately, Valenzuela supports the growth of the organization by providing the financial transparency and analytical insights required for sustainable business development.

    Efrain Perez - Chief Operating Officer

    Efrain Perez, the Chief Operating Officer at TPC Group, manages the day-to-day manufacturing processes and facility maintenance. Overseeing the technical teams responsible for processing petrochemical raw materials, the Chief Operating Officer ensures that all production plants operate at peak capacity. This leadership role involves coordinating with logistics managers to guarantee the timely delivery of products across the Gulf Coast. By optimizing plant safety protocols and environmental compliance, Efrain Perez drives operational reliability throughout the manufacturing network. Perez monitors equipment performance and maintenance schedules to prevent downtime and maximize output efficiency. Through the implementation of lean manufacturing principles, the Chief Operating Officer reduces waste and improves the overall quality of the chemical output. Ultimately, Perez supports the company mission by maintaining a robust and efficient production environment that meets the high-volume demands of the petrochemical market.

    Todd Knowles - President

    Todd Knowles, the President at TPC Group, oversees the commercial strategy and customer relationship management for the petrochemical division. Managing the sales teams, the President drives revenue growth by identifying new market opportunities for C4 hydrocarbon products. This leadership role involves negotiating long-term supply contracts with major industrial clients across the Gulf Coast. By analyzing customer feedback and market demand, Todd Knowles ensures that the product offerings remain aligned with industry requirements. Knowles collaborates with the operations team to ensure that production schedules meet the delivery commitments made to key accounts. Through the development of strategic partnerships, the President expands the market reach of the company. Ultimately, Knowles supports the mission of the organization by maintaining strong commercial relationships and ensuring that the company remains the preferred provider of critical chemical infrastructure and logistics services.

    Peter Troiano - President

    Peter Troiano, the President at TPC Group, directs the logistics and infrastructure services division. Overseeing the transportation network and storage facilities, the President ensures the safe and efficient movement of petrochemical materials throughout the region. This leadership role involves managing the maintenance of critical infrastructure assets to prevent service disruptions. By optimizing logistics routes and terminal operations, Peter Troiano drives cost reductions and improves service reliability for all clients. Troiano coordinates with the safety department to ensure that all logistics activities comply with environmental and transportation regulations. Through the implementation of tracking technologies, the President enhances the visibility of the supply chain for internal and external stakeholders. Ultimately, Troiano supports the company mission by providing the essential logistics backbone that allows the organization to deliver value-added products to the market with consistency and precision.

    Frequently Asked Questions Regarding TPC Group Top Executives and Leadership Team

    Who leads TPC Group?
    TPC Group is led by Michael McDonnell (Chairman & Chief Executive Officer), along with executives such as Edward Dineen (President & 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 Michael McDonnell (Chairman & Chief Executive Officer), Edward Dineen (President & 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 Chairman & Chief Executive Officer, President & Chief Executive Officer, Founder & Chief Executive Officer, Chief Financial Officer, Senior Vice President & Chief Financial Officer.