Vallourec Executive and Leadership Team

May, 2026

Leadership Overview

Vallourec has 7 executives leading key functions including strategy, operations, finance, and regional management.

Driven by innovation, Vallourec provides solutions to energy industries, specializing in hot rolled seamless steel tubes, expandable tubular technology, automotive parts, and stainless steel, impacting global markets.

Leadership Roles at Vallourec

  • Chief Financial Officer - Marcus Rangel
  • President & Chief Operating Officer - Joel Mastervich
  • Director, President - Sheila Santos
  • President - Gary Hauck
  • President - Arturo Dediego
  • Chief of Staff - Nagham Faisal
  • Senior VP (North America) - Bertrand Frischman
  • Marcus Rangel - Chief Financial Officer

    Marcus Rangel, the Chief Financial Officer at Vallourec, directs all financial operations and strategic fiscal planning. Rangel oversees budgeting, forecasting, and financial reporting, ensuring robust fiscal health for the company's diverse product lines, including specialized steel tubes and automotive components. This leadership position involves managing capital allocation, optimizing investment strategies, and mitigating financial risks associated with global operations. Rangel's expertise is critical in supporting Vallourec's expansion in energy industries and its production of stainless steel and expandable tubular technology. The Chief Financial Officer works closely with other executives to drive profitability and shareholder value. Marcus Rangel ensures financial compliance and guides the company toward sustainable economic growth.

    Joel Mastervich - President & Chief Operating Officer

    Joel Mastervich, the President & Chief Operating Officer at Vallourec, commands the company's global operational activities and strategic direction. Mastervich oversees the entire production lifecycle for Vallourec's core products, from hot rolled seamless steel tubes to automotive parts and stainless steel. This executive role involves driving operational efficiency, implementing advanced manufacturing techniques, and ensuring the highest quality standards across all facilities. Mastervich's leadership is pivotal in managing supply chains, optimizing resource allocation, and fostering a culture of continuous improvement. The President & Chief Operating Officer also plays a key part in developing and executing strategies for market expansion, particularly within the energy sector. Joel Mastervich ensures that Vallourec's operational capabilities consistently meet and exceed industry expectations.

    Sheila Santos - Director, President

    Sheila Santos, the Director, President at Vallourec, directs overarching corporate strategy and operational execution. Santos guides the company's strategic vision, ensuring alignment with market demands for energy solutions and specialized steel products. This leadership role involves fostering innovation in hot rolled seamless steel tubes and expandable tubular technology. Santos oversees the integration of automotive parts and stainless steel divisions, driving efficiency across all business units. The President's focus remains on expanding Vallourec's global footprint and reinforcing its position as a key solutions provider to the energy sector. Sheila Santos actively collaborates with other senior leaders to achieve ambitious growth targets and maintain operational excellence.
    Sheila Santos

    Gary Hauck - President

    Gary Hauck, the President at Vallourec, leads significant business units and drives strategic growth initiatives. Hauck focuses on enhancing Vallourec's market presence through innovative solutions in specialized steel tubes and automotive parts. This leadership role involves overseeing key operational segments and ensuring their alignment with the company's overall objectives. Hauck's responsibilities include fostering strong client relationships and identifying new opportunities within the energy sector. The President is instrumental in guiding the development and deployment of expandable tubular technology and stainless steel products. Gary Hauck works to maximize profitability and operational effectiveness within the divisions under management, contributing directly to Vallourec's sustained success.

    Arturo Dediego - President

    Arturo Dediego, the President at Vallourec, spearheads critical business functions and drives strategic market penetration. Dediego focuses on advancing Vallourec's capabilities in specialized steel products, including automotive parts and stainless steel. This leadership role involves overseeing specific operational segments and ensuring their contribution to the company's overall performance. Dediego's responsibilities include cultivating key partnerships and exploring new avenues for growth within the energy sector. The President plays a vital part in the strategic deployment of hot rolled seamless steel tubes and expandable tubular technology. Arturo Dediego works to enhance market competitiveness and operational excellence within the areas managed, supporting Vallourec's long-term objectives.

    Nagham Faisal - Chief of Staff

    Nagham Faisal, the Chief of Staff at Vallourec, manages strategic initiatives and operational coordination across departments. Faisal ensures seamless execution of the company's directives, facilitating communication between executive leadership and functional teams. This role involves optimizing workflows and driving key projects related to Vallourec's specialized offerings, including hot rolled seamless steel tubes and automotive parts. Faisal supports the President in implementing strategic priorities and enhancing overall organizational effectiveness. The Chief of Staff's responsibilities extend to analyzing business performance and identifying areas for improvement in the production of stainless steel and expandable tubular technology. Nagham Faisal plays a crucial part in maintaining operational synergy and driving forward the company's mission.

    Bertrand Frischman - Senior VP (North America)

    Bertrand Frischman, the Senior VP (North America) at Vallourec, directs and expands the company's operations across the North American region. Frischman oversees the strategic implementation of Vallourec's product portfolio, including hot rolled seamless steel tubes, automotive parts, and stainless steel, within this critical market. This executive position involves managing regional sales, business development, and ensuring customer satisfaction. Frischman's leadership is key to driving growth and market share in North America, particularly for energy industry solutions and expandable tubular technology. The Senior VP works to optimize regional supply chains and operational efficiency. Bertrand Frischman ensures that Vallourec's presence in North America is robust and strategically aligned with global objectives.

    Explore Leadership Teams in Building Materials

    Frequently Asked Questions Regarding Vallourec Top Executives and Leadership Team

    Who leads Vallourec?
    Vallourec is led by Marcus Rangel (Chief Financial Officer), along with executives such as Joel Mastervich (President & Chief Operating Officer) and Sheila Santos (Director, President).
    Who is part of Vallourec’s executive team?
    The executive team of Vallourec includes leaders such as Marcus Rangel (Chief Financial Officer), Joel Mastervich (President & Chief Operating Officer), Sheila Santos (Director, President) and other senior executives.
    How many executives does Vallourec have?
    Vallourec has 7 executives leading key business areas.
    What roles are included in Vallourec’s leadership team?
    The leadership team of Vallourec includes roles such as Chief Financial Officer, President & Chief Operating Officer, Director, President, President, President.