Mack Molding Executive and Leadership Team

May, 2026

Leadership Overview

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

Driven by a commitment to manufacturing excellence, Mack Molding delivers custom plastics solutions, leveraging decades of expertise to serve diverse industries with innovative design and rapid prototyping.

Leadership Roles at Mack Molding

  • Chief Executive Officer - Teresa Mack
  • Chief Financial Officer - Dennis Poirier
  • President - Bob McKiernan
  • President - John Mack
  • Plant Manager - Bryan Campbell
  • 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 strategy and operational vision. This leadership role involves guiding all departments to ensure alignment with Mack Molding's core mission of providing custom plastics manufacturing solutions. Teresa Mack oversees the integration of design, prototyping, and injection molding services, ensuring seamless execution from concept to production. The Chief Executive Officer's responsibilities extend to fostering innovation and maintaining the company's competitive edge in the manufacturing sector. By setting strategic objectives and monitoring key performance indicators, Teresa Mack drives the company's growth and commitment to client satisfaction. This executive ensures that Mack Molding's operations consistently meet the highest standards of quality and efficiency, reinforcing its reputation as a leading custom plastics molder.

    Dennis Poirier - Chief Financial Officer

    Dennis Poirier, the Chief Financial Officer at Mack Molding, manages all financial aspects of the organization. This includes financial planning, risk management, and reporting, ensuring the company's fiscal health and stability. Dennis Poirier oversees budgeting, forecasting, and investment strategies, providing critical financial insights to support strategic decision-making. The Chief Financial Officer's role involves optimizing financial performance and resource allocation across all operational units. By maintaining robust financial controls and compliance, Poirier safeguards the company's assets and enhances shareholder value. This executive's expertise is vital in navigating market fluctuations and driving sustainable financial growth for Mack Molding's custom plastics and contract manufacturing services.

    Bob McKiernan - President

    Bob McKiernan, the President at Mack Molding, spearheads the company's strategic direction and operational execution. This leadership position involves overseeing all facets of the business, from product development to market expansion, ensuring alignment with Mack Molding's commitment to custom plastics manufacturing. Bob McKiernan drives initiatives focused on enhancing production efficiency and fostering innovation in areas like rapid prototyping and injection molding. The President's responsibilities include cultivating strong client relationships and identifying new market opportunities. By championing operational excellence, McKiernan ensures that Mack Molding consistently delivers high-quality solutions and maintains its competitive advantage in the manufacturing industry. This executive's vision guides the company's growth and its dedication to client success.
    Bob McKiernan

    John Mack - President

    John Mack, the President at Mack Molding, drives the company's strategic vision and operational excellence. This executive oversees all business functions, ensuring that Mack Molding's custom plastics molding and contract manufacturing services meet the highest industry standards. John Mack focuses on enhancing production capabilities, fostering innovation in areas like rapid prototyping, and expanding the company's market presence. The President's responsibilities include cultivating strong client relationships and identifying strategic growth opportunities. By championing operational efficiency and product quality, Mack ensures Mack Molding remains a trusted partner for clients seeking advanced plastics design and injection molding solutions. This leadership guides the company's commitment to delivering superior manufacturing outcomes.

    Bryan Campbell - Plant Manager

    Bryan Campbell, the Plant Manager at Mack Molding, directs daily manufacturing operations at the facility. This role involves overseeing production schedules, quality control, and the efficient utilization of resources for custom plastics molding and injection molding processes. Bryan Campbell ensures that all manufacturing activities adhere to strict safety and quality standards, contributing directly to the company's reputation for excellence. The Plant Manager's responsibilities include managing the production team, optimizing workflow, and implementing process improvements to enhance efficiency and reduce costs. By focusing on operational effectiveness, Campbell plays a crucial part in delivering high-quality products to clients, supporting Mack Molding's contract manufacturing services. This executive's hands-on approach guarantees the smooth functioning of the production floor.

    Ronnie Melck - Chief Financial & Operations Officer

    Ronnie Melck, the Chief Financial & Operations Officer at Mack Molding, holds dual responsibility for the company's financial health and operational efficiency. This executive oversees financial planning, budgeting, and resource allocation, ensuring fiscal discipline across all departments. Concurrently, Ronnie Melck directs manufacturing operations, focusing on optimizing production processes for custom plastics, rapid prototyping, and injection molding. The Chief Financial & Operations Officer's role involves integrating financial strategies with operational execution to drive profitability and sustainable growth. By managing both financial performance and operational output, Melck ensures that Mack Molding maintains its competitive edge and delivers exceptional value to clients. This leadership ensures seamless coordination between financial objectives and manufacturing capabilities.

    Nicolas Mack - Chief Sales & Marketing Officer

    Nicolas Mack, the Chief Sales & Marketing Officer at Mack Molding, leads the company's go-to-market strategy and revenue generation efforts. This executive is responsible for developing and executing comprehensive sales and marketing plans to expand market reach for custom plastics molding and contract manufacturing services. Nicolas Mack oversees all aspects of customer acquisition, retention, and brand development, ensuring alignment with Mack Molding's innovative product offerings. The Chief Sales & Marketing Officer's role involves identifying new business opportunities, fostering strategic partnerships, and driving sales growth. By championing customer-centric initiatives, Mack ensures that the company's solutions effectively meet market demands. This leadership role is critical in positioning Mack Molding as a leader in plastics design and injection molding.

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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 Dennis Poirier (Chief Financial Officer) and Bob McKiernan (President).
    Who is part of Mack Molding’s executive team?
    The executive team of Mack Molding includes leaders such as Teresa Mack (Chief Executive Officer), Dennis Poirier (Chief Financial Officer), Bob McKiernan (President) 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, President, Plant Manager.