PMC Group Executive and Leadership Team

May, 2026

Leadership Overview

PMC Group has 8 executives leading key functions including strategy, operations, and market development.

Driven by innovation, PMC Group specializes in defoamers, methyl esters, waxes, and wax blends, and flame retardant compounds, impacting global chemical markets.

Leadership Roles at PMC Group

  • Chief Executive Officer - Guillermo Piecarchic
  • Parther Chief Executive Officer - Chet King
  • Chief Operating Officer - Salim Bahoura
  • President - Debtosh Chakrabarti
  • President - Mark Hettervig
  • President - James Mountain
  • President - Stephen Winkler
  • President - Joe Grossi
  • Guillermo Piecarchic - Chief Executive Officer

    Guillermo Piecarchic, the Chief Executive Officer at PMC Group, directs the overarching corporate strategy and long-term vision. Piecarchic guides the company's expansion into new chemical markets and oversees the development of innovative product lines, including specialized defoamers and flame retardant compounds. This leadership role involves aligning all business units with the company's core mission of delivering high-quality chemical solutions. Guillermo Piecarchic ensures operational efficiency across global manufacturing facilities, driving sustainable growth and maximizing shareholder value. The Chief Executive Officer's responsibilities extend to fostering key partnerships and maintaining PMC Group's competitive edge in the chemical industry. Strategic decision-making regarding resource allocation and market penetration falls under Piecarchic's purview, ensuring the company's continued success and industry leadership.

    Chet King - Parther Chief Executive Officer

    Chet King, the Parther Chief Executive Officer at PMC Group, collaborates closely with the Chief Executive Officer to shape strategic initiatives and operational frameworks. King focuses on enhancing the company's global presence and optimizing its portfolio of chemical products, such as methyl esters and wax blends. This executive position involves driving operational excellence and ensuring seamless integration of acquired businesses. Chet King is responsible for identifying emerging market trends and translating them into actionable business strategies. The Parther Chief Executive Officer's role includes fostering a culture of innovation and accountability throughout the organization. By overseeing key strategic partnerships, Chet King contributes significantly to PMC Group's market expansion and revenue growth, reinforcing the company's position as a leader in specialized chemical manufacturing.

    Salim Bahoura - Chief Operating Officer

    Salim Bahoura, the Chief Operating Officer at PMC Group, directs all aspects of the company's global manufacturing and operational activities. Bahoura oversees the production of defoamers, waxes, and flame retardant compounds, ensuring adherence to stringent quality and safety standards. This critical role involves optimizing supply chain logistics and driving efficiency across all production facilities located in New Jersey and beyond. Salim Bahoura is instrumental in implementing process improvements that enhance productivity and reduce operational costs. The Chief Operating Officer's responsibilities include managing plant operations, overseeing capital expenditures for manufacturing upgrades, and ensuring the reliable delivery of products to customers worldwide. By focusing on operational excellence, Bahoura supports PMC Group's commitment to consistent product quality and market responsiveness.

    Debtosh Chakrabarti - President

    Debtosh Chakrabarti, the President at PMC Group, leads specific strategic business units, focusing on market penetration and product development within the chemical sector. Chakrabarti drives the commercial strategy for key product lines, including methyl esters and specialized wax blends, ensuring alignment with overall corporate objectives. This leadership position involves cultivating strong customer relationships and identifying new commercial opportunities. Debtosh Chakrabarti oversees sales and marketing efforts, aiming to expand PMC Group's market share in both established and emerging regions. The President's focus is on translating market insights into tangible business growth and ensuring the profitability of the assigned divisions. Chakrabarti's efforts are crucial for maintaining PMC Group's competitive advantage through targeted product innovation and effective market engagement.

    Mark Hettervig - President

    Mark Hettervig, the President at PMC Group, spearheads initiatives focused on the development and commercialization of advanced flame retardant compounds and other specialty chemicals. Hettervig directs research and development efforts, ensuring that PMC Group remains at the forefront of chemical innovation. This executive role involves managing product lifecycles from conception through market launch, emphasizing performance and safety. Mark Hettervig oversees cross-functional teams dedicated to product engineering and application support, providing customers with tailored solutions. The President's objective is to drive revenue growth through the introduction of novel chemical formulations and to enhance the company's technological capabilities. Hettervig's leadership ensures that PMC Group consistently delivers cutting-edge products that meet evolving industry demands.

    James Mountain - President

    James Mountain, the President at PMC Group, leads the strategic direction and operational oversight for the company's wax and wax blends division. Mountain focuses on optimizing production processes and expanding the market reach for these specialized products. This executive position involves managing key supplier relationships and ensuring the consistent quality of raw materials. James Mountain drives initiatives aimed at enhancing product performance and exploring new applications for PMC Group's wax formulations. The President's responsibilities include overseeing sales channels and developing market strategies to capture greater market share. Mountain's leadership ensures that the wax division contributes significantly to the company's overall growth and profitability, reinforcing PMC Group's expertise in wax technology.

    Stephen Winkler - President

    Stephen Winkler, the President at PMC Group, directs the company's strategic expansion and operational efficiency within the defoamer product segment. Winkler focuses on enhancing manufacturing capabilities and driving market penetration for these critical chemical solutions. This leadership role involves overseeing product development pipelines and ensuring that PMC Group's defoamers meet the highest industry standards for performance and environmental compliance. Stephen Winkler is responsible for forging strategic alliances and expanding distribution networks to reach a broader customer base. The President's objective is to foster innovation and operational excellence within the defoamer division, contributing to the company's sustained growth. Winkler's expertise is vital in maintaining PMC Group's competitive position through superior product offerings and market responsiveness.
    Stephen Winkler

    Joe Grossi - President

    Joe Grossi, the President at PMC Group, leads the strategic development and commercial execution for the company's methyl ester product lines. Grossi focuses on optimizing production yields and expanding market access for these versatile chemical compounds. This executive position involves managing key customer accounts and identifying opportunities for product customization to meet specific industry needs. Joe Grossi drives initiatives aimed at enhancing the performance characteristics of PMC Group's methyl esters and exploring new application areas. The President's responsibilities include overseeing sales strategies and developing market plans to increase revenue and market share. Grossi's leadership ensures that the methyl ester division remains a significant contributor to PMC Group's overall success and innovation.

    Frequently Asked Questions Regarding PMC Group Top Executives and Leadership Team

    Who leads PMC Group?
    PMC Group is led by Guillermo Piecarchic (Chief Executive Officer), along with executives such as Chet King (Parther Chief Executive Officer) and Salim Bahoura (Chief Operating Officer).
    Who is part of PMC Group’s executive team?
    The executive team of PMC Group includes leaders such as Guillermo Piecarchic (Chief Executive Officer), Chet King (Parther Chief Executive Officer), Salim Bahoura (Chief Operating Officer) and other senior executives.
    How many executives does PMC Group have?
    PMC Group has 8 executives leading key business areas.
    What roles are included in PMC Group’s leadership team?
    The leadership team of PMC Group includes roles such as Chief Executive Officer, Parther Chief Executive Officer, Chief Operating Officer, President, President.