PMC Group Executive and Leadership Team

June, 2026

Leadership Overview

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

Driven by a commitment to 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 - James Mountain
  • President - Mark Hettervig
  • President - Debtosh Chakrabarti
  • 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 global operations. Piecarchic guides the company's expansion into new chemical markets and oversees the development of advanced defoamer and flame retardant compounds. This leadership role involves ensuring operational efficiency across all PMC Group facilities, particularly those in New Jersey, and driving innovation in methyl ester and wax blend technologies. Guillermo Piecarchic's strategic vision focuses on sustainable growth and maintaining PMC Group's position as a leader in specialty chemicals. The Chief Executive Officer ensures alignment with market demands and regulatory standards, fostering a culture of continuous improvement throughout the organization. This executive's mandate includes optimizing resource allocation and identifying strategic partnerships to enhance market penetration.

    Chet King - Parther Chief Executive Officer

    Chet King, the Parther Chief Executive Officer at PMC Group, collaborates on executive leadership and strategic direction. King's responsibilities include fostering key stakeholder relationships and driving the company's global market presence. This role involves overseeing the strategic deployment of resources for the development of specialized chemical products, including waxes and wax blends. Chet King's focus extends to identifying emerging opportunities within the chemical manufacturing sector, particularly in North America. The Parther Chief Executive Officer ensures that PMC Group's operational framework supports ambitious growth targets and maintains a competitive edge. This executive's contributions are vital for navigating complex market dynamics and securing long-term business viability. King also champions initiatives that enhance the company's reputation for quality and reliability in the chemical industry.

    Salim Bahoura - Chief Operating Officer

    Salim Bahoura, the Chief Operating Officer at PMC Group, manages the day-to-day operational execution across all manufacturing sites. Bahoura oversees the production of defoamers, methyl esters, and flame retardant compounds, ensuring adherence to stringent quality and safety standards. This leadership position involves optimizing supply chain logistics and enhancing manufacturing efficiency to meet global demand. Salim Bahoura's operational oversight extends to the New Jersey facilities, driving process improvements and cost-effectiveness. The Chief Operating Officer ensures seamless integration of new technologies and production methodologies. This executive's focus is on maintaining operational excellence and supporting the company's expansion into new geographic markets. Bahoura also directs efforts to minimize environmental impact through efficient resource utilization.

    James Mountain - President

    James Mountain, the President at PMC Group, spearheads strategic initiatives focused on product innovation and market development. Mountain directs the expansion of the company's portfolio, particularly in advanced wax blends and specialty chemicals. This presidential role involves fostering collaborations with research and development teams to accelerate the introduction of new compounds. James Mountain's leadership ensures that PMC Group remains at the forefront of chemical technology, serving diverse industrial applications. The President oversees market analysis to identify growth opportunities and competitive advantages. This executive's mandate includes driving revenue growth through strategic sales and marketing efforts across North America and beyond. Mountain also champions initiatives that enhance customer satisfaction and product performance.

    Mark Hettervig - President

    Mark Hettervig, the President at PMC Group, drives the strategic direction for key business segments, focusing on operational scaling and efficiency. Hettervig oversees the global production and distribution of PMC Group's core chemical products, including defoamers and methyl esters. This leadership position involves optimizing manufacturing processes to ensure consistent product quality and timely delivery to clients worldwide. Mark Hettervig's responsibilities include managing cross-functional teams to achieve ambitious production targets and enhance supply chain resilience. The President ensures that all operations align with the company's commitment to sustainability and regulatory compliance. Hettervig's strategic focus is on expanding PMC Group's market share through operational excellence and superior product offerings. This executive also guides efforts to improve internal workflows and resource management.

    Debtosh Chakrabarti - President

    Debtosh Chakrabarti, the President at PMC Group, leads strategic planning and business development initiatives across the organization. Chakrabarti focuses on expanding PMC Group's global footprint and enhancing its market position in specialty chemicals. This role involves identifying and capitalizing on new business opportunities, particularly in emerging markets. Debtosh Chakrabarti's leadership ensures that the company's product development aligns with evolving industry needs, especially for flame retardant compounds and wax blends. The President oversees strategic partnerships and alliances that drive innovation and market penetration. Chakrabarti's mandate includes fostering a culture of continuous improvement and operational excellence throughout the company's international operations. This executive's vision is critical for sustained growth and competitive advantage in the global chemical sector.

    Stephen Winkler - President

    Stephen Winkler, the President at PMC Group, directs strategic market expansion and customer engagement initiatives. Winkler oversees the development and implementation of go-to-market strategies for PMC Group's diverse chemical product lines, including defoamers and methyl esters. This leadership role involves cultivating strong relationships with key clients and partners across various industries. Stephen Winkler's focus is on driving revenue growth and enhancing customer loyalty through superior product performance and dedicated support. The President ensures that sales and marketing efforts are aligned with the company's overall business objectives and market trends. Winkler also champions initiatives that promote brand visibility and market leadership. This executive's expertise is crucial for navigating competitive landscapes and securing long-term business success.
    Stephen Winkler

    Joe Grossi - President

    Joe Grossi, the President at PMC Group, drives strategic initiatives focused on operational efficiency and product innovation. Grossi oversees the development and execution of plans to enhance the manufacturing and distribution of PMC Group's specialty chemicals, including waxes and wax blends. This leadership position involves optimizing production processes and supply chain management to meet global demand effectively. Joe Grossi's responsibilities include fostering a culture of continuous improvement and ensuring adherence to the highest quality standards across all operations. The President plays a key role in identifying and implementing technological advancements to maintain a competitive edge. Grossi's strategic vision supports the company's growth objectives and commitment to delivering exceptional value to customers worldwide. This executive also guides efforts to strengthen market presence and expand product applications.

    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.