Fermilab Executive and Leadership Team

November, 2026

Leadership Overview

Fermilab has 7 executives leading key functions including strategy, technology, finance, operations, human resources, administration, and executive leadership.

Advancing the frontiers of high-energy particle physics, Fermilab maintains a commitment to scientific discovery and national research excellence through rigorous experimental inquiry and infrastructure development.

Leadership Roles at Fermilab

  • Chief Executive Officer - Ali Nipadimi
  • Chief Financial Officer - Brett Bosley
  • Deputy Chief Operating Officer At Fermi National Accelerator Laboratory - Marc Clay
  • President - Susan Dahl
  • Chief Technology Officer - Anna Grassellino
  • Chief of Staff - Hema Ramamoorthi
  • Chief Human Resources Officer - Velma Gordon
  • Ali Nipadimi - Chief Executive Officer

    Ali Nipadimi, the Chief Executive Officer at Fermilab, directs the overarching strategic vision for high-energy particle physics research. Nipadimi manages the laboratory's alignment with United States Department of Energy mandates while overseeing complex scientific initiatives. By coordinating with the Board and federal stakeholders, the Chief Executive Officer ensures the laboratory maintains global leadership in subatomic research. Ali Nipadimi drives the long-term operational roadmap, focusing on the integration of advanced accelerator technologies and large-scale experimental facilities. This leadership role involves balancing fiscal responsibility with the pursuit of fundamental scientific breakthroughs. Through the optimization of research priorities, the Chief Executive Officer fosters an environment conducive to innovation. Nipadimi secures the necessary resources to sustain high-impact projects, ensuring the laboratory remains at the forefront of global physics research while delivering significant advancements in the understanding of the universe.

    Brett Bosley - Chief Financial Officer

    Brett Bosley, the Chief Financial Officer at Fermilab, manages the fiscal health and budgetary planning for the national laboratory. Bosley oversees the allocation of federal funding, ensuring compliance with Department of Energy financial regulations and reporting standards. By directing the financial strategy, the Chief Financial Officer supports the procurement of specialized equipment and the maintenance of large-scale research facilities. Brett Bosley drives cost-efficiency initiatives, optimizing resource distribution across various scientific departments to maximize research output. This leadership role involves rigorous oversight of capital expenditures and long-term financial forecasting to sustain ongoing particle physics projects. Through the implementation of robust financial controls, the Chief Financial Officer mitigates operational risks and ensures the stability of the laboratory's research programs. Bosley maintains transparency in fiscal operations, providing the necessary economic foundation for the laboratory to pursue complex, multi-year scientific endeavors.
    Brett Bosley

    Marc Clay - Deputy Chief Operating Officer At Fermi National Accelerator Laboratory

    Marc Clay, the Deputy Chief Operating Officer At Fermi National Accelerator Laboratory at Fermilab, manages the day-to-day operational logistics of the laboratory's expansive research facilities. Clay oversees the maintenance of critical infrastructure, ensuring that accelerator systems and experimental halls operate at peak performance. By directing facility management and site operations, the Deputy Chief Operating Officer At Fermi National Accelerator Laboratory supports the seamless execution of high-energy physics experiments. Marc Clay drives safety protocols and operational efficiency, minimizing downtime for essential research equipment. This role involves coordinating with technical teams to address facility-wide challenges and ensuring that the physical environment meets the stringent requirements of particle physics research. Through the management of site-wide services, the Deputy Chief Operating Officer At Fermi National Accelerator Laboratory maintains the operational integrity of the laboratory. Clay ensures that all logistical support functions are fully aligned with the laboratory's scientific mission.

    Susan Dahl - President

    Susan Dahl, the President at Fermilab, provides executive leadership and represents the laboratory in national and international scientific forums. Dahl oversees the laboratory's external relations, engaging with government agencies and academic partners to advance the national research agenda. By directing the laboratory's public and institutional presence, the President ensures that the organization's contributions to particle physics are recognized and supported. Susan Dahl drives strategic partnerships that expand the laboratory's research capabilities and influence. This leadership role involves setting the tone for the laboratory's culture and ensuring that all activities remain consistent with the mission of the Department of Energy. Through the cultivation of high-level relationships, the President secures the support necessary for large-scale scientific investments. Dahl maintains a focus on the laboratory's long-term impact, ensuring that the organization continues to push the boundaries of human knowledge through rigorous, collaborative scientific inquiry.

    Anna Grassellino - Chief Technology Officer

    Anna Grassellino, the Chief Technology Officer at Fermilab, architects the technical infrastructure required for cutting-edge particle physics experiments. Grassellino oversees the development of superconducting radio frequency technologies and advanced instrumentation essential for accelerator performance. By managing the laboratory's technical roadmap, the Chief Technology Officer ensures that experimental hardware meets the rigorous demands of modern physics research. Anna Grassellino drives the implementation of next-generation diagnostic tools, facilitating breakthroughs in high-energy particle detection. This role involves close collaboration with engineering teams to refine experimental design and improve operational efficiency across the Batavia campus. Through the application of advanced materials science, the Chief Technology Officer enhances the capabilities of the laboratory's primary research assets. Grassellino maintains a focus on technical excellence, ensuring that all technological deployments support the broader mission of expanding the boundaries of scientific knowledge.

    Hema Ramamoorthi - Chief of Staff

    Hema Ramamoorthi, the Chief of Staff at Fermilab, coordinates executive operations and facilitates communication across the laboratory's leadership team. Ramamoorthi manages the flow of information between the executive office and various research divisions, ensuring alignment with the laboratory's strategic goals. By streamlining administrative processes, the Chief of Staff enhances the efficiency of decision-making cycles. Hema Ramamoorthi drives the execution of organizational initiatives, acting as a liaison for internal and external stakeholders to maintain operational cohesion. This role involves managing high-priority projects that require cross-functional collaboration, ensuring that the laboratory's mission remains the primary focus of all administrative activities. Through the orchestration of executive meetings and policy implementation, the Chief of Staff supports the laboratory's commitment to scientific excellence. Ramamoorthi ensures that leadership objectives are clearly communicated and effectively integrated into the daily operations of the facility.

    Velma Gordon - Chief Human Resources Officer

    Velma Gordon, the Chief Human Resources Officer at Fermilab, directs the talent acquisition and workforce development strategies for the laboratory. Gordon oversees the recruitment of world-class physicists, engineers, and administrative staff, ensuring the organization maintains a competitive edge in the scientific community. By managing employee relations and professional development programs, the Chief Human Resources Officer fosters a culture of innovation and collaboration. Velma Gordon drives initiatives focused on diversity, equity, and inclusion, ensuring the laboratory attracts top-tier talent from global research markets. This leadership role involves designing compensation structures and performance management systems that align with the unique needs of a national research facility. Through the optimization of human capital, the Chief Human Resources Officer supports the laboratory's ability to execute complex, long-term scientific projects. Gordon ensures that the workforce remains highly skilled and motivated to achieve the laboratory's ambitious research objectives.

    Explore Leadership Teams in Business Services

    Frequently Asked Questions Regarding Fermilab Top Executives and Leadership Team

    Who leads Fermilab?
    Fermilab is led by Ali Nipadimi (Chief Executive Officer), along with executives such as Brett Bosley (Chief Financial Officer) and Marc Clay (Deputy Chief Operating Officer At Fermi National Accelerator Laboratory).
    Who is part of Fermilab’s executive team?
    The executive team of Fermilab includes leaders such as Ali Nipadimi (Chief Executive Officer), Brett Bosley (Chief Financial Officer), Marc Clay (Deputy Chief Operating Officer At Fermi National Accelerator Laboratory) and other senior executives.
    How many executives does Fermilab have?
    Fermilab has 7 executives leading key business areas.
    What roles are included in Fermilab’s leadership team?
    The leadership team of Fermilab includes roles such as Chief Executive Officer, Chief Financial Officer, Deputy Chief Operating Officer At Fermi National Accelerator Laboratory, President, Chief Technology Officer.