TMS International Executive and Leadership Team

June, 2026

Leadership Overview

TMS International has 9 executives leading key functions including strategy, operations, technology, and finance.

Driven by a legacy of industrial support, TMS International provides essential on-site mill services to steel manufacturing companies globally, focusing on operational efficiency and client success.

Leadership Roles at TMS International

  • Chief Executive Officer - David Perkins
  • President & Chief Executive Officer - Joel Hawthorne
  • Chief Financial Officer & Executive Vice President - Daniel Boor
  • Senior Vice President & Chief Financial Officer - Kirk Peters
  • Group Performance Materials President & Chief Operating Officer - J. Aronson
  • President - Tariq Shamma
  • President, Environmental & Industrial Services - Richard Santello
  • President - Stephen Gardner
  • Chief Technology Officer - Darpan Dalal
  • David Perkins - Chief Executive Officer

    David Perkins, the Chief Executive Officer at TMS International, directs the overarching corporate strategy and operational execution. Perkins guides the company's global expansion initiatives, ensuring alignment with market demands for on-site industrial mill services. This leadership role involves optimizing resource allocation across all business units to enhance service delivery to industrial steel manufacturing clients worldwide. Perkins's focus remains on driving sustainable growth and maintaining TMS International's position as a premier service provider. The Chief Executive Officer's responsibilities include fostering innovation within service offerings and ensuring the company's long-term financial health and operational excellence. David Perkins actively collaborates with other senior leaders to refine the strategic vision and operational frameworks that support client objectives.

    Joel Hawthorne - President & Chief Executive Officer

    Joel Hawthorne, the President & Chief Executive Officer at TMS International, spearheads the company's strategic direction and operational oversight. Hawthorne drives the global business development efforts, focusing on expanding TMS International's reach within the industrial steel manufacturing sector. This executive position involves ensuring seamless integration of services and maximizing client value across all operational regions. The President & Chief Executive Officer's mandate includes cultivating strong client relationships and identifying new market opportunities. Joel Hawthorne oversees the execution of corporate policies and the implementation of strategic initiatives designed to enhance service quality and operational efficiency. By championing a culture of continuous improvement, Hawthorne ensures the company remains at the forefront of industrial mill services.
    Joel Hawthorne

    Daniel Boor - Chief Financial Officer & Executive Vice President

    Daniel Boor, the Chief Financial Officer & Executive Vice President at TMS International, directs all financial operations and fiscal strategy. Boor manages the company's financial planning, budgeting, and reporting, ensuring robust fiscal health and compliance with global financial regulations. This executive role is pivotal in supporting TMS International's extensive on-site industrial mill services for steel manufacturers. The Chief Financial Officer & Executive Vice President's duties encompass risk management, capital allocation, and optimizing financial performance across all international operations. Daniel Boor works closely with executive leadership to drive profitability and ensure the financial sustainability of the company's worldwide service offerings. Boor's oversight guarantees that financial decisions align with strategic objectives and support long-term growth.

    Kirk Peters - Senior Vice President & Chief Financial Officer

    Kirk Peters, the Senior Vice President & Chief Financial Officer at TMS International, supports the financial strategy and operational accounting functions. Peters oversees financial analysis, forecasting, and reporting, contributing to the fiscal stability of the company's global industrial mill services. This executive role is integral to managing the financial aspects of TMS International's operations, particularly in supporting its extensive client base in the steel manufacturing industry. The Senior Vice President & Chief Financial Officer's responsibilities include ensuring financial compliance, managing budgets, and identifying opportunities for cost optimization. Kirk Peters collaborates with the Chief Financial Officer & Executive Vice President to uphold rigorous financial standards and support strategic decision-making. Peters's expertise ensures sound financial management across all company activities.

    J. Aronson - Group Performance Materials President & Chief Operating Officer

    J. Aronson, the Group Performance Materials President & Chief Operating Officer at TMS International, leads the operational execution and strategic development for performance materials. Aronson oversees the delivery of specialized industrial mill services, ensuring high standards of quality and efficiency for steel manufacturing clients. This leadership position involves managing day-to-day operations, optimizing supply chains, and driving operational improvements across the group. The Group Performance Materials President & Chief Operating Officer's responsibilities include enhancing productivity and ensuring seamless service provision globally. J. Aronson focuses on operational excellence, resource management, and fostering a culture of safety and performance. Aronson's strategic direction ensures that performance materials operations contribute significantly to TMS International's overall success and client satisfaction.

    Tariq Shamma - President

    Tariq Shamma, the President at TMS International, directs specific business unit operations and strategic initiatives. Shamma focuses on enhancing the delivery of on-site industrial mill services, ensuring operational excellence and client satisfaction within designated market segments. This leadership role involves overseeing departmental functions, driving performance metrics, and fostering collaborative environments. The President's responsibilities include managing key operational processes and aligning business unit strategies with the company's broader objectives. Tariq Shamma is dedicated to optimizing service offerings and expanding market presence through effective leadership and strategic planning. Shamma's efforts contribute to the overall growth and operational efficiency of TMS International's global service network.

    Richard Santello - President, Environmental & Industrial Services

    Richard Santello, the President, Environmental & Industrial Services at TMS International, leads the specialized services division. Santello oversees the strategic direction and operational execution of environmental and industrial services, ensuring compliance and high performance for clients in the steel manufacturing sector. This executive position involves managing complex projects and driving innovation within the service offerings. The President, Environmental & Industrial Services's responsibilities include developing operational strategies, managing resources, and ensuring the highest standards of safety and quality. Richard Santello focuses on expanding the capabilities of the division and strengthening its market position. Santello's leadership ensures that these critical services effectively support TMS International's commitment to its industrial partners worldwide.

    Stephen Gardner - President

    Stephen Gardner, the President at TMS International, drives strategic growth and operational oversight for key business segments. Gardner focuses on enhancing the company's service portfolio, particularly in the realm of on-site industrial mill services for steel manufacturers. This leadership role involves managing cross-functional teams and ensuring the effective implementation of corporate strategies. The President's responsibilities include identifying market opportunities, optimizing operational workflows, and fostering client relationships. Stephen Gardner is committed to operational excellence and driving value for stakeholders. Gardner's strategic vision and execution capabilities contribute significantly to TMS International's ongoing success and expansion in the global industrial services market.

    Darpan Dalal - Chief Technology Officer

    Darpan Dalal, the Chief Technology Officer at TMS International, architects the company's technological infrastructure and digital transformation strategies. Dalal oversees the development and implementation of innovative solutions that enhance the efficiency and effectiveness of on-site industrial mill services. This role is critical in leveraging technology to support TMS International's global operations and client service delivery. The Chief Technology Officer's responsibilities include managing the IT department, ensuring data security, and driving the adoption of new digital tools across the organization. Darpan Dalal focuses on integrating advanced technologies to streamline processes, improve operational insights, and maintain a competitive edge in the industrial services market. Dalal's leadership ensures technological advancements directly support the company's mission to serve steel manufacturers worldwide.

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    Frequently Asked Questions Regarding TMS International Top Executives and Leadership Team

    Who leads TMS International?
    TMS International is led by David Perkins (Chief Executive Officer), along with executives such as Joel Hawthorne (President & Chief Executive Officer) and Daniel Boor (Chief Financial Officer & Executive Vice President).
    Who is part of TMS International’s executive team?
    The executive team of TMS International includes leaders such as David Perkins (Chief Executive Officer), Joel Hawthorne (President & Chief Executive Officer), Daniel Boor (Chief Financial Officer & Executive Vice President) and other senior executives.
    How many executives does TMS International have?
    TMS International has 9 executives leading key business areas.
    What roles are included in TMS International’s leadership team?
    The leadership team of TMS International includes roles such as Chief Executive Officer, President & Chief Executive Officer, Chief Financial Officer & Executive Vice President, Senior Vice President & Chief Financial Officer, Group Performance Materials President & Chief Operating Officer.