ATI Executive and Leadership Team

October, 2026

Leadership Overview

ATI has 10 executives leading key functions including organizational strategy, financial oversight, and specialized manufacturing operations.

Focused on delivering high-performance materials for aerospace and defense, ATI drives global innovation through advanced metallurgical engineering and complex component manufacturing to meet the most demanding industrial requirements.

Leadership Roles at ATI

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

    Rob Foster, the Chief Financial Officer at ATI, directs the global financial strategy and capital allocation processes. Foster oversees fiscal planning, ensuring that investments in specialty materials production align with long-term profitability goals. The Chief Financial Officer manages investor relations and maintains transparency regarding the company's financial health. Rob Foster evaluates market trends in the oil, gas, and automotive industries to inform budgetary decisions. By implementing robust financial controls, the Chief Financial Officer mitigates risk while supporting expansion into new high-growth markets. This leadership role requires constant interaction with the Board to refine capital structures and optimize cash flow. Through disciplined fiscal management, Foster secures the resources necessary for technological advancement. Ultimately, the Chief Financial Officer strengthens the balance sheet, providing a stable foundation for the company's ongoing commitment to engineering excellence and market leadership.
    Rob Foster

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

    Donald Newman, the Executive Vice President & Chief Financial Officer, Finance at ATI, manages the enterprise-wide financial reporting and accounting functions. Newman oversees the integrity of financial data, ensuring compliance with regulatory standards across all manufacturing divisions. The Executive Vice President & Chief Financial Officer, Finance evaluates the cost-efficiency of production cycles for complex components. Donald Newman drives initiatives to improve margin performance through rigorous expense management and operational auditing. This role involves collaborating with other executives to assess the financial viability of new product development projects. By analyzing global economic indicators, the Executive Vice President & Chief Financial Officer, Finance provides the strategic foresight needed to navigate volatile commodity markets. Newman maintains a focus on long-term value creation, ensuring that financial resources support the company's technical innovation. Ultimately, the Executive Vice President & Chief Financial Officer, Finance secures the fiscal stability required for sustained industrial growth.
    Donald Newman

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

    James R. Foster, the Senior VP, Finance & Chief Financial Officer at ATI, leads the treasury and tax planning functions to optimize the company's global tax position. Foster manages liquidity and debt financing, ensuring that the firm maintains the capital flexibility required for large-scale manufacturing projects. The Senior VP, Finance & Chief Financial Officer evaluates the financial impact of international trade policies on the supply chain. James R. Foster directs the development of financial models that forecast revenue growth across diverse sectors like electrical energy and medical technology. This leadership role involves coordinating with external auditors and financial institutions to maintain strong credit ratings. By focusing on capital efficiency, the Senior VP, Finance & Chief Financial Officer supports the company's ability to invest in cutting-edge material science. Ultimately, Foster ensures that financial operations remain aligned with the strategic vision of delivering high-performance solutions to global customers.
    James R. Foster

    Lee Weber - Business Unit President

    Lee Weber, the Business Unit President at ATI, oversees the operational performance and market expansion of specific high-growth business segments. Weber directs the manufacturing output and quality assurance protocols for specialized product lines. The Business Unit President manages regional sales teams to capture market share in the automotive and industrial sectors. Lee Weber implements lean manufacturing principles to reduce waste and improve production throughput. This role involves close collaboration with engineering teams to translate customer requirements into high-performance material solutions. By monitoring competitive dynamics, the Business Unit President identifies opportunities for product differentiation and service enhancement. Weber maintains a focus on operational safety and environmental compliance across all managed facilities. Ultimately, the Business Unit President drives revenue growth by ensuring that the business unit delivers consistent value and technical reliability to a diverse global customer base.

    Mark Sirianni - President, Ati Forged Products

    Mark Sirianni, the President, Ati Forged Products at ATI, leads the specialized forging division, focusing on the production of high-strength components for the aerospace industry. Sirianni oversees the technical processes involved in shaping advanced alloys to meet rigorous structural requirements. The President, Ati Forged Products manages the integration of new forging technologies to enhance component durability and performance. Mark Sirianni coordinates with defense contractors to ensure that production schedules meet critical delivery timelines. This role involves optimizing the supply chain for raw materials to maintain cost-effective manufacturing. By fostering a culture of precision and quality, the President, Ati Forged Products ensures that all forged components exceed industry safety standards. Sirianni monitors operational metrics to drive continuous improvement in manufacturing efficiency. Ultimately, the President, Ati Forged Products strengthens the company's market position by delivering superior forged solutions for the most demanding engineering applications.

    Ken McMillen - President, ATI Specialty Rolled Products

    Ken McMillen, the President, ATI Specialty Rolled Products at ATI, directs the production and distribution of high-performance rolled materials. McMillen oversees the operation of rolling mills, ensuring that output meets the precise specifications required for medical and electrical energy applications. The President, ATI Specialty Rolled Products manages the technical development of new alloy grades to address evolving market needs. Ken McMillen coordinates with research and development teams to scale innovative material solutions from the laboratory to full-scale production. This role involves managing complex logistics to ensure timely delivery to global customers. By focusing on process automation and equipment reliability, the President, ATI Specialty Rolled Products maximizes production capacity and operational uptime. McMillen maintains a commitment to quality control, ensuring that every rolled product adheres to strict performance criteria. Ultimately, the President, ATI Specialty Rolled Products drives the company's success by providing essential materials for critical infrastructure.

    Trevor Giroux - President

    Trevor Giroux, the President at ATI, manages the strategic direction of core manufacturing operations to ensure alignment with global market demands. Giroux oversees the implementation of advanced manufacturing technologies across multiple facilities. The President coordinates with the executive team to define long-term growth strategies for the specialty materials portfolio. Trevor Giroux monitors the performance of key business units, ensuring that operational goals support the company's overall financial objectives. This role involves engaging with major clients to understand emerging needs in the aerospace and defense sectors. By driving operational excellence, the President ensures that the company maintains its competitive edge in material science. Giroux fosters innovation by encouraging the adoption of sustainable manufacturing practices. Ultimately, the President provides the leadership necessary to navigate complex industrial landscapes while delivering high-performance components that meet the most rigorous customer requirements.

    John Minich - President

    John Minich, the President at ATI, leads the development and execution of operational strategies focused on enhancing manufacturing efficiency and product quality. Minich oversees the integration of digital tools into the production environment to improve real-time monitoring and decision-making. The President manages the workforce and talent development initiatives to ensure that the company retains the technical expertise required for complex material manufacturing. John Minich collaborates with other leaders to optimize the global supply chain, reducing lead times for critical components. This role involves assessing the impact of new technologies on production costs and output quality. By prioritizing safety and operational discipline, the President ensures that all manufacturing processes remain compliant with international standards. Minich drives the company's commitment to innovation by overseeing the deployment of new production capabilities. Ultimately, the President strengthens the firm's market position through consistent delivery of high-performance material solutions.

    Karl Brendle - Mech. Maintenence TechUnion President

    Karl Brendle, the Mech. Maintenence TechUnion President at ATI, represents the interests of the mechanical maintenance workforce while ensuring alignment with operational safety and productivity goals. Brendle facilitates communication between maintenance technicians and management to resolve technical challenges in the production environment. The Mech. Maintenence TechUnion President oversees training programs that keep the maintenance team proficient in servicing advanced manufacturing equipment. Karl Brendle coordinates with facility managers to schedule preventative maintenance, minimizing downtime for critical production lines. This role involves advocating for workplace safety improvements and the adoption of best practices in equipment repair. By fostering a collaborative environment, the Mech. Maintenence TechUnion President ensures that the maintenance team contributes effectively to the company's overall manufacturing success. Brendle maintains a focus on operational reliability, ensuring that all machinery functions at peak performance. Ultimately, the Mech. Maintenence TechUnion President supports the company's mission by maintaining the integrity of the production infrastructure.

    Jamie Bishop - Chief of Staff

    Jamie Bishop, the Chief of Staff at ATI, coordinates cross-functional initiatives to streamline corporate operations. Bishop manages internal communications and aligns executive priorities with the broader mission of manufacturing specialty materials. By facilitating collaboration between departments, the Chief of Staff ensures that strategic objectives remain on schedule. Jamie Bishop monitors project milestones across global facilities, providing the necessary oversight to maintain operational efficiency. This role involves synthesizing complex data into actionable insights for the leadership team. Through rigorous management of internal workflows, the Chief of Staff supports the company's commitment to high-performance standards. Bishop maintains a focus on organizational agility, allowing the firm to respond rapidly to shifts in the aerospace and defense sectors. Ultimately, the Chief of Staff optimizes internal processes to drive sustainable growth and operational excellence across all business units.

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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 Donald Newman (Executive Vice President & Chief Financial Officer, Finance) and James R. Foster (Senior VP, Finance & Chief Financial Officer).
    Who is part of ATI’s executive team?
    The executive team of ATI includes leaders such as Rob Foster (Chief Financial Officer), Donald Newman (Executive Vice President & Chief Financial Officer, Finance), James R. Foster (Senior VP, Finance & Chief Financial Officer) 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, Executive Vice President & Chief Financial Officer, Finance, Senior VP, Finance & Chief Financial Officer, Business Unit President, President, Ati Forged Products.