Mack Molding Executive and Leadership Team

June, 2026

Leadership Overview

Mack Molding has 7 executives leading key functions including strategy, finance, operations, and sales.

Driven by a legacy of manufacturing excellence, Mack Molding is dedicated to providing innovative custom plastics solutions and contract manufacturing services, impacting diverse industries through advanced prototyping and injection molding.

Leadership Roles at Mack Molding

  • Chief Executive Officer - Teresa Mack
  • Chief Financial Officer - Florence Belnap
  • President, Southern Division - Bryan Campbell
  • President - John Mack
  • President - Bob McKiernan
  • Chief Financial & Operations Officer - Ronnie Melck
  • Chief Sales & Marketing Officer - Nicolas Mack
  • Teresa Mack - Chief Executive Officer

    Teresa Mack, the Chief Executive Officer at Mack Molding, directs the company's overarching strategic vision and operational execution. Overseeing all business units, Teresa Mack ensures alignment with the company's core mission of delivering high-quality custom plastics manufacturing. This leadership role involves guiding innovation in plastics design, rapid prototyping, and injection molding processes to meet evolving client demands. By fostering a culture of continuous improvement, Teresa Mack drives the company's market position and long-term growth objectives. The Chief Executive Officer's responsibilities extend to stakeholder relations and ensuring the company's financial health and operational efficiency across all facilities.

    Florence Belnap - Chief Financial Officer

    Florence Belnap, the Chief Financial Officer at Mack Molding, manages all financial planning, reporting, and fiscal management. Overseeing the company's financial health, Florence Belnap ensures robust capital allocation and risk management strategies are in place. This critical role involves analyzing financial data to support strategic decision-making, optimizing operational expenditures, and maintaining strong relationships with financial institutions. By driving fiscal discipline, Florence Belnap directly contributes to the company's profitability and sustainable expansion in the custom plastics manufacturing sector. The Chief Financial Officer's purview includes treasury, accounting, and financial controls, safeguarding the company's assets and ensuring compliance with all regulatory requirements.

    Bryan Campbell - President, Southern Division

    Bryan Campbell, the President, Southern Division at Mack Molding, spearheads all operations and strategic initiatives within the southern region. Overseeing market penetration and client engagement, Bryan Campbell drives revenue growth and operational excellence across southern facilities. This leadership position involves managing divisional P&L, fostering regional team development, and ensuring seamless integration of custom plastics design and manufacturing services. By focusing on regional market dynamics, Bryan Campbell enhances Mack Molding's service delivery and competitive advantage. The President, Southern Division's responsibilities include expanding the company's footprint and solidifying its reputation for quality and innovation in the southern territories.

    John Mack - President

    John Mack, the President at Mack Molding, guides the strategic direction and operational oversight of the company. Overseeing key business functions, John Mack ensures the consistent delivery of high-quality custom plastics manufacturing and contract services. This leadership role involves driving innovation in plastics design, rapid prototyping, and injection molding technologies to meet diverse industry needs. By championing operational excellence, John Mack strengthens Mack Molding's market presence and client relationships. The President's responsibilities encompass fostering a collaborative work environment and ensuring the company's long-term sustainability and growth in the manufacturing sector.

    Bob McKiernan - President

    Bob McKiernan, the President at Mack Molding, directs strategic initiatives and operational performance across key business segments. Overseeing market expansion and client satisfaction, Bob McKiernan drives the company's growth in custom plastics manufacturing and contract services. This leadership position involves optimizing injection molding processes, advancing rapid prototyping capabilities, and ensuring the highest standards in plastics design. By focusing on strategic partnerships and operational efficiency, Bob McKiernan enhances Mack Molding's competitive standing. The President's role is vital in steering the company towards new opportunities and maintaining its reputation for excellence in the manufacturing industry.
    Bob McKiernan

    Ronnie Melck - Chief Financial & Operations Officer

    Ronnie Melck, the Chief Financial & Operations Officer at Mack Molding, directs both the financial strategy and the operational execution of the company. Overseeing manufacturing processes and financial controls, Ronnie Melck ensures efficiency and profitability across all production lines. This dual role involves optimizing supply chain logistics, managing operational budgets, and implementing cost-effective manufacturing solutions for custom plastics, rapid prototyping, and injection molding. By integrating financial acumen with operational oversight, Ronnie Melck drives significant improvements in productivity and resource utilization. The Chief Financial & Operations Officer's leadership is crucial for maintaining Mack Molding's competitive edge and delivering exceptional value to clients.

    Nicolas Mack - Chief Sales & Marketing Officer

    Nicolas Mack, the Chief Sales & Marketing Officer at Mack Molding, leads all sales and marketing strategies to drive revenue and market share. Overseeing global outreach and brand development, Nicolas Mack ensures effective communication of Mack Molding's capabilities in custom plastics, design, and manufacturing. This executive role involves identifying new market opportunities, cultivating client relationships, and developing integrated marketing campaigns that highlight the company's expertise in rapid prototyping and injection molding. By aligning sales efforts with market trends, Nicolas Mack significantly contributes to the company's commercial success and expansion. The Chief Sales & Marketing Officer's focus is on building a strong brand presence and driving sustainable sales growth.

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    Frequently Asked Questions Regarding Mack Molding Top Executives and Leadership Team

    Who leads Mack Molding?
    Mack Molding is led by Teresa Mack (Chief Executive Officer), along with executives such as Florence Belnap (Chief Financial Officer) and Bryan Campbell (President, Southern Division).
    Who is part of Mack Molding’s executive team?
    The executive team of Mack Molding includes leaders such as Teresa Mack (Chief Executive Officer), Florence Belnap (Chief Financial Officer), Bryan Campbell (President, Southern Division) and other senior executives.
    How many executives does Mack Molding have?
    Mack Molding has 7 executives leading key business areas.
    What roles are included in Mack Molding’s leadership team?
    The leadership team of Mack Molding includes roles such as Chief Executive Officer, Chief Financial Officer, President, Southern Division, President, President.