JENNMAR Executive and Leadership Team

September, 2026

Leadership Overview

JENNMAR has 4 executives leading key functions including strategy, operations, financial management, and corporate leadership.

Focused on engineering excellence, JENNMAR delivers advanced ground control solutions to mining and civil construction sectors worldwide while maintaining a commitment to safety and structural stability in challenging underground environments.

Leadership Roles at JENNMAR

  • Chief Executive Officer - David Webster
  • Chief Financial Officer - Tim Maziarz
  • Chief Operating Officer - Michael Portwood
  • President - Brian Delloma
  • David Webster - Chief Executive Officer

    David Webster, the Chief Executive Officer at JENNMAR, directs the overarching strategic vision for the global manufacturing and engineering enterprise. Webster architects long-term growth initiatives by aligning ground control product development with the evolving safety requirements of the mining and tunneling industries. By overseeing the integration of steel structures and resin products, the Chief Executive Officer ensures that the company maintains a competitive edge in international infrastructure markets. This leadership role involves constant collaboration with the Board to refine operational goals and expand the reach of specialized support systems. David Webster drives the organizational culture toward innovation and technical precision, ensuring that every project receives the necessary expertise from initial consultation to final field application. Through rigorous oversight of global affiliates, the Chief Executive Officer secures the stability and efficiency of all manufacturing processes, ultimately reinforcing the market position of the firm across diverse civil construction landscapes.

    Tim Maziarz - Chief Financial Officer

    Tim Maziarz, the Chief Financial Officer at JENNMAR, oversees the fiscal health and capital allocation strategies of the organization. Maziarz directs financial planning, budgeting, and risk management activities to support the company's global manufacturing and engineering objectives. By analyzing market trends in the mining and tunneling sectors, the Chief Financial Officer provides the data-driven insights necessary for informed investment in new resin products and fabrication technologies. This leadership role involves managing complex financial structures across international affiliates to ensure consistent profitability and liquidity. Tim Maziarz collaborates with executive leadership to evaluate the financial viability of large-scale civil construction projects and infrastructure contracts. Through the maintenance of robust financial controls, the Chief Financial Officer safeguards the assets of the firm while funding initiatives that drive long-term value. Maziarz ensures that the company remains well-positioned to navigate economic fluctuations while continuing to deliver reliable ground control solutions to a worldwide client base.
    Tim Maziarz

    Michael Portwood - Chief Operating Officer

    Michael Portwood, the Chief Operating Officer at JENNMAR, manages the daily execution of manufacturing and engineering workflows across all global facilities. Portwood optimizes supply chain logistics and production schedules to ensure the timely delivery of engineered support systems for demanding mining and civil construction projects. By streamlining internal processes, the Chief Operating Officer enhances operational efficiency and reduces downtime for clients operating in challenging environments. This role requires close coordination with technical teams to maintain high standards for custom fabrication and steel structure production. Michael Portwood monitors performance metrics across regional operations to identify opportunities for process improvement and resource allocation. Through the implementation of advanced manufacturing protocols, the Chief Operating Officer guarantees that the company meets strict safety benchmarks. Portwood maintains a focus on scaling production capabilities to support the expanding needs of infrastructure markets, ensuring that every product meets the rigorous demands of underground and aboveground construction applications.

    Brian Delloma - President

    Brian Delloma, the President at JENNMAR, leads the commercial expansion and market development efforts for the company's diverse portfolio of ground control products. Delloma drives the implementation of business development strategies that connect engineered support systems with the specific needs of the mining, tunneling, and civil construction industries. By overseeing client relationships and project consultations, the President ensures that the company provides comprehensive technical expertise from the initial design phase through final field application. This role involves coordinating with cross-functional teams to tailor custom fabrication solutions for unique underground challenges. Brian Delloma monitors competitive dynamics in the global infrastructure market to identify new growth opportunities and service enhancements. Through the active management of regional market penetration, the President strengthens the brand presence and ensures that the company remains the preferred partner for safety-critical construction projects. Delloma focuses on delivering consistent value to stakeholders by maintaining high standards of service and product reliability.

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    Frequently Asked Questions Regarding JENNMAR Top Executives and Leadership Team

    Who leads JENNMAR?
    JENNMAR is led by David Webster (Chief Executive Officer), along with executives such as Tim Maziarz (Chief Financial Officer) and Michael Portwood (Chief Operating Officer).
    Who is part of JENNMAR’s executive team?
    The executive team of JENNMAR includes leaders such as David Webster (Chief Executive Officer), Tim Maziarz (Chief Financial Officer), Michael Portwood (Chief Operating Officer) and other senior executives.
    How many executives does JENNMAR have?
    JENNMAR has 4 executives leading key business areas.
    What roles are included in JENNMAR’s leadership team?
    The leadership team of JENNMAR includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President.