Steel Dynamics Executive and Leadership Team

July, 2026

Leadership Overview

Steel Dynamics has 5 executives leading key functions including strategy, finance, operations, human resources, and information technology.

Driven by innovation, Steel Dynamics is dedicated to manufacturing high-quality steel products and providing essential metals recycling services, impacting diverse sectors across the United States and internationally.

Leadership Roles at Steel Dynamics

  • Co-founder, Chairman & Chief Executive Officer - Mark Millett
  • Executive VP & Chief Financial Officer - Theresa Wagler
  • President & Chief Operating Officer - Barry Schneider
  • Hrd - Shawn Shi
  • Information - Mimi Johnson
  • Mark Millett - Co-founder, Chairman & Chief Executive Officer

    Mark Millett, Co-founder, Chairman & Chief Executive Officer at Steel Dynamics, directs the overarching strategy and corporate vision. Millett guides the company's integrated operations, encompassing steel production, metals recycling, and steel fabrication. This leadership role ensures the comprehensive range of steel products, including sheet steel, structural beams, and engineered bars, meet diverse market demands across construction, automotive, and manufacturing sectors. Overseeing global expansion and market penetration, Millett drives the company's financial performance and operational excellence. The Chairman & Chief Executive Officer ensures alignment with the company's mission to be a leading provider of steel products and recycling services. By fostering innovation and strategic partnerships, Mark Millett solidifies Steel Dynamics' position in the industry.
    Mark Millett

    Theresa Wagler - Executive VP & Chief Financial Officer

    Theresa Wagler, Executive VP & Chief Financial Officer at Steel Dynamics, manages all financial operations and strategic fiscal planning. Wagler oversees capital allocation, investment strategies, and financial reporting, ensuring robust financial health across the company's diverse business units. This executive VP & Chief Financial Officer role is critical for supporting the production of sheet steel, structural beams, and engineered bars, as well as the company's extensive metals recycling services. Wagler drives initiatives to optimize financial performance and manage risk, directly impacting the company's ability to serve sectors like construction, automotive, and agriculture equipment. By maintaining strong relationships with financial institutions and stakeholders, Theresa Wagler ensures the company's sustained growth and profitability. The financial strategy directly supports Steel Dynamics' operational scale and market reach.
    Theresa Wagler

    Barry Schneider - President & Chief Operating Officer

    Barry Schneider, President & Chief Operating Officer at Steel Dynamics, directs the day-to-day operational execution across all company segments. Schneider oversees the integrated steel production facilities, metals recycling operations, and steel fabrication plants, ensuring efficient output of products like sheet steel, structural beams, and fabricated building components. This President & Chief Operating Officer role is pivotal in maintaining high standards of quality and safety throughout the manufacturing processes. Schneider drives operational improvements and cost efficiencies, directly supporting the company's service to construction, automotive, and transportation markets. By optimizing supply chains and production schedules, Barry Schneider ensures timely delivery and customer satisfaction. The operational leadership under Schneider is fundamental to Steel Dynamics' market competitiveness and integrated business model.
    Barry Schneider

    Shawn Shi - Hrd

    Shawn Shi, Hrd at Steel Dynamics, manages critical human resources functions essential for organizational development and employee engagement. Shi oversees talent acquisition, workforce planning, and employee relations, ensuring a skilled and motivated team supports the company's manufacturing and recycling operations. This Hrd role is vital for aligning human capital strategies with Steel Dynamics' business objectives, including the production of diverse steel products and the processing of metals. Shi implements programs that foster a positive work environment and support employee growth, contributing to operational efficiency and innovation across all departments. By developing and executing HR policies, Shawn Shi ensures compliance and promotes a culture of excellence. The human resources strategy directly supports the company's extensive operations and market presence.

    Mimi Johnson - Information

    Mimi Johnson, Information at Steel Dynamics, oversees the strategic management and implementation of information systems across the organization. Johnson directs the development and maintenance of technology infrastructure, ensuring data integrity and security for all operational and financial functions. This Information role is crucial for supporting the company's integrated business model, from steel production and fabrication to metals recycling services. Johnson drives digital transformation initiatives, enhancing operational efficiency and enabling data-driven decision-making for market analysis and strategic planning. By leveraging technology, Mimi Johnson supports the company's ability to serve diverse sectors including construction, automotive, and manufacturing. The information technology strategy directly underpins Steel Dynamics' competitive advantage and operational scalability.

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    Frequently Asked Questions Regarding Steel Dynamics Top Executives and Leadership Team

    Who leads Steel Dynamics?
    Steel Dynamics is led by Mark Millett (Co-founder, Chairman & Chief Executive Officer), along with executives such as Theresa Wagler (Executive VP & Chief Financial Officer) and Barry Schneider (President & Chief Operating Officer).
    Who is part of Steel Dynamics’s executive team?
    The executive team of Steel Dynamics includes leaders such as Mark Millett (Co-founder, Chairman & Chief Executive Officer), Theresa Wagler (Executive VP & Chief Financial Officer), Barry Schneider (President & Chief Operating Officer) and other senior executives.
    How many executives does Steel Dynamics have?
    Steel Dynamics has 5 executives leading key business areas.
    What roles are included in Steel Dynamics’s leadership team?
    The leadership team of Steel Dynamics includes roles such as Co-founder, Chairman & Chief Executive Officer, Executive VP & Chief Financial Officer, President & Chief Operating Officer, Hrd, Information.