ATI Executive and Leadership Team

November, 2026

Leadership Overview

ATI has 10 executives leading key functions including financial strategy, operational management, and specialty materials production.

Focused on delivering high-performance solutions for aerospace and defense, ATI maintains a commitment to engineering excellence and global market leadership through advanced manufacturing.

Leadership Roles at ATI

  • Chief Financial Officer - Rob Foster
  • Senior VP, Finance & Chief Financial Officer - James R. Foster
  • Executive Vice President & Chief Financial Officer, Finance - Donald Newman
  • President - John Minich
  • President - Trevor Giroux
  • Business Unit President - Lee Weber
  • President, ATI Specialty Rolled Products - Ken McMillen
  • President, Ati Forged Products - Mark Sirianni
  • President - Heather Simmons
  • Chief of Staff - Jamie Bishop
  • Rob Foster - Chief Financial Officer

    Rob Foster, the Chief Financial Officer at ATI, directs the global fiscal strategy and capital allocation processes. Overseeing the financial health of the organization, the Chief Financial Officer ensures alignment between budgetary constraints and the production of technically advanced specialty materials. This leadership role involves managing investor relations and reporting standards across North American and international markets. By optimizing cost structures and capital investments, Rob Foster directly impacts the long-term profitability of the company. Furthermore, the Chief Financial Officer collaborates with the Board to mitigate financial risks associated with complex component manufacturing. Through rigorous oversight of financial planning and analysis, Foster secures the necessary resources to support innovation in the aerospace and defense sectors, maintaining the competitive edge of the firm in a demanding global landscape.
    Rob Foster

    James R. Foster - Senior VP, Finance & Chief Financial Officer

    James R. Foster, the Senior VP, Finance & Chief Financial Officer at ATI, manages the comprehensive financial architecture and treasury functions. Overseeing the fiscal integrity of the company, the Senior VP, Finance & Chief Financial Officer drives the development of long-term financial models that support the production of complex components. This leadership role involves navigating the economic complexities of the global specialty materials market to ensure sustainable revenue growth. By implementing robust financial controls, James R. Foster directly impacts the stability and scalability of the business. Furthermore, the Senior VP, Finance & Chief Financial Officer coordinates with external stakeholders to communicate the financial performance and strategic direction of the firm. Through the management of capital structures and financial risk, Foster enables the organization to pursue aggressive innovation in the automotive and electrical energy sectors.
    James R. Foster

    Donald Newman - Executive Vice President & Chief Financial Officer, Finance

    Donald Newman, the Executive Vice President & Chief Financial Officer, Finance at ATI, oversees the strategic financial planning and corporate accounting functions. Driving the financial strategy for the manufacturing of specialty materials, the Executive Vice President & Chief Financial Officer, Finance ensures that capital deployment aligns with the technical requirements of the aerospace and defense industries. This leadership role involves managing the financial reporting infrastructure and ensuring compliance with global regulatory standards. By analyzing market trends and financial data, Donald Newman directly impacts the strategic decision-making process of the executive team. Furthermore, the Executive Vice President & Chief Financial Officer, Finance collaborates with operational leaders to optimize the cost of goods sold and improve manufacturing margins. Through the management of financial assets, Newman supports the company in maintaining its position as a leader in high-performance material solutions.
    Donald Newman

    John Minich - President

    John Minich, the President at ATI, directs the overarching operational strategy and business development initiatives. Overseeing the execution of corporate objectives, the President ensures that the manufacturing of specialty materials meets the rigorous demands of the global aerospace and defense markets. This leadership role involves managing the performance of core business units to drive revenue growth and operational excellence. By fostering a culture of innovation, John Minich directly impacts the ability of the company to deliver high-performance components. Furthermore, the President coordinates with other C-suite leaders to align production capabilities with emerging industry requirements. Through the management of large-scale operations, Minich ensures that the organization maintains its competitive advantage, driving efficiency and quality across all manufacturing processes to support the long-term success of the firm.

    Trevor Giroux - President

    Trevor Giroux, the President at ATI, manages the strategic expansion and market penetration efforts for the company's specialty materials portfolio. Overseeing the development of new business opportunities, the President ensures that the organization effectively serves the automotive and electrical energy sectors. This leadership role involves identifying market gaps and aligning production capacity with the specific needs of industrial customers. By driving the commercial strategy, Trevor Giroux directly impacts the market share and revenue growth of the firm. Furthermore, the President collaborates with technical teams to ensure that product offerings remain at the forefront of material science innovation. Through the management of customer relationships and market-facing initiatives, Giroux supports the company in achieving its growth targets, ensuring that the business remains responsive to the evolving demands of the global manufacturing landscape.

    Lee Weber - Business Unit President

    Lee Weber, the Business Unit President at ATI, leads the operational performance and strategic direction of a key manufacturing division. Overseeing the production of complex components, the Business Unit President ensures that the division meets the high-performance standards required by the oil, gas, and medical industries. This leadership role involves managing the supply chain and manufacturing workflows to optimize output and quality. By driving operational improvements, Lee Weber directly impacts the profitability and efficiency of the business unit. Furthermore, the Business Unit President coordinates with cross-functional teams to implement new manufacturing technologies that enhance product capabilities. Through the management of daily operations and long-term strategic planning, Weber ensures that the division contributes significantly to the overall success and market reputation of the company.

    Ken McMillen - President, ATI Specialty Rolled Products

    Ken McMillen, the President, ATI Specialty Rolled Products at ATI, directs the manufacturing and commercial operations for the rolled products division. Overseeing the production of high-performance specialty materials, the President, ATI Specialty Rolled Products ensures that the division delivers solutions that meet the demanding requirements of the aerospace and automotive industries. This leadership role involves managing the technical processes and quality control standards necessary for complex component manufacturing. By optimizing production efficiency, Ken McMillen directly impacts the competitive positioning of the rolled products business. Furthermore, the President, ATI Specialty Rolled Products collaborates with engineering teams to develop innovative material applications that address specific customer challenges. Through the management of the division's operational scale, McMillen supports the company in maintaining its leadership in the specialty materials market.

    Mark Sirianni - President, Ati Forged Products

    Mark Sirianni, the President, Ati Forged Products at ATI, manages the forging operations and strategic growth of the forged products division. Overseeing the manufacturing of high-performance components, the President, Ati Forged Products ensures that the division meets the rigorous specifications of the defense and aerospace sectors. This leadership role involves managing the technical forging processes and ensuring the delivery of high-quality materials to global customers. By driving operational excellence, Mark Sirianni directly impacts the performance and reliability of the forged products business. Furthermore, the President, Ati Forged Products coordinates with research and development teams to advance the capabilities of the forging division. Through the management of production assets and strategic initiatives, Sirianni supports the company in achieving its goals for innovation and market leadership in the specialty materials industry.

    Heather Simmons - President

    Heather Simmons, the President at ATI, leads the strategic initiatives focused on organizational transformation and operational efficiency. Overseeing the integration of new technologies into the manufacturing process, the President ensures that the company maintains its status as a leader in specialty materials. This leadership role involves managing the alignment of internal resources with the long-term strategic goals of the firm. By driving process improvements, Heather Simmons directly impacts the agility and responsiveness of the organization to market changes. Furthermore, the President collaborates with other executive leaders to foster a culture of continuous improvement and innovation across all business units. Through the management of strategic projects, Simmons supports the company in navigating the complexities of the global manufacturing environment, ensuring sustained growth and operational success.
    Heather Simmons

    Jamie Bishop - Chief of Staff

    Jamie Bishop, the Chief of Staff at ATI, coordinates executive operations and facilitates cross-functional communication across the enterprise. Overseeing the implementation of strategic initiatives, the Chief of Staff ensures that organizational goals remain synchronized with the manufacturing of high-performance materials. This leadership role involves managing the flow of information between the C-suite and various business units to streamline decision-making processes. By fostering collaboration across departments, Jamie Bishop directly impacts operational efficiency and internal alignment. Furthermore, the Chief of Staff manages special projects that address the evolving requirements of the oil, gas, and medical industries. Through the synchronization of internal workflows, Bishop supports the executive team in executing the broader corporate mission, ensuring that all operational activities contribute to the sustained growth and market impact of the organization.

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    Frequently Asked Questions Regarding ATI Top Executives and Leadership Team

    Who leads ATI?
    ATI is led by Rob Foster (Chief Financial Officer), along with executives such as James R. Foster (Senior VP, Finance & Chief Financial Officer) and Donald Newman (Executive Vice President & Chief Financial Officer, Finance).
    Who is part of ATI’s executive team?
    The executive team of ATI includes leaders such as Rob Foster (Chief Financial Officer), James R. Foster (Senior VP, Finance & Chief Financial Officer), Donald Newman (Executive Vice President & Chief Financial Officer, Finance) and other senior executives.
    How many executives does ATI have?
    ATI has 10 executives leading key business areas.
    What roles are included in ATI’s leadership team?
    The leadership team of ATI includes roles such as Chief Financial Officer, Senior VP, Finance & Chief Financial Officer, Executive Vice President & Chief Financial Officer, Finance, President, President.