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Mr. Bell serves as Leidos' Chief Executive Officer, overseeing global operations and 47,000 employees worldwide. With a customer-focused and innovative approach, Mr. Bell's strategic vision for Leidos focuses on promoting healthy growth while advancing the Company's overall strategy. Mr. Bell's more than 40 years of leadership experience at prominent aerospace and defense organizations provide him with deep experience overseeing a wide range of critical functions, including engineering, public policy, contracts and pricing, research and development prioritization, capital allocation and M&A. Prior to Leidos, Mr. Bell served as President of Rolls-Royce's defense business, leading a global team of 10,000 innovating solutions for aerospace and naval customers, and also led its North American business and U.S. operations. Mr. Bell previously spent over 25 years at Boeing working in domestic and international leadership roles, and began his aerospace career with Lockheed Martin in human space flight. Professional Highlights: Leidos Holdings Inc. CEO and Director. Rolls-Royce plc, a global multinational aerospace and defense company - President, Defense, Chairman and CEO, Rolls-Royce North America, Inc. Boeing Co., a leading global aerospace company - SVP, Global Sales and Marketing, Defense, Space & Security; Strategy Lead, Defense and Space; VP, Business Development, Precision Engagement and Mobility Systems; Logistics Support Systems; President, UK Operations. Other leadership roles: Martin Marietta (merged with Lockheed Corporation to form Lockheed Martin), a diversified American manufacturer of aerospace and defense systems.

Mr. Cage has served as Executive Vice President and Chief Financial Officer since July 2021. He has served in several capacities throughout his 26-year tenure with Leidos, including Senior Vice President, Chief Accounting Officer and Corporate Controller, Senior Vice President for Financial Planning and Analysis and Chief Financial Officer for the Health Group.

Mr. Antal has served as Executive Vice President and General Counsel since April 2024. He rejoined Leidos in April 2024 after serving as General Counsel for Rolls-Royce Defense and North America since January 2021. Prior to joining Leidos, Mr. Antal served as U.S. senior counsel for a Canadian based A&E firm, and previously spent 10 years with MWH Global. He held a variety of leadership roles at MWH, including as Associate General Counsel, Director of Risk Management for the Middle East, and completed a two-year assignment in the UK in operational capacity, where he led the integration of a strategic acquisition and assumed the role of International Managing Director.

Ms. Porter has served as President for the Health and Civil Sector since January 2024. Previously, she served as President for our Health Group since August 2020 and, before that, as Acting Group President for the Health Group since March 2020. Ms. Porter also served as Senior Vice President and Operation Manager for Leidos' Federal Energy and Environment business. Prior to that role, Ms. Porter served as the Department of Defense Information Networks & Mission Partner Program Director. Prior to joining Leidos, Ms. Porter served Lockheed Martin Corporation in several capacities, most recently as Director of Energy Initiatives, Corporate Engineering and Technology.

As a former CEO of a major utility company and senior executive in numerous energy companies, Mr. Shapard demonstrated a strong track record of successfully deploying large-scale systems, cybersecurity protocols and advanced sustainable technologies, which enable him to effectively oversee Leidos' technological offerings, operations and strategic leadership in sustainable solutions for clients. His decades of leadership in the highly regulated energy and utility industries also provided him with a deep understanding of federal and state regulatory environments, procurement and compliance requirements, and strategic partnerships with government entities and public policy. Mr. Shapard also has deep expertise in corporate finance, financial risk management, capital markets, investments and capital allocation strategies from his executive financial leadership roles, including his service as CFO of several public companies. He brings experience in managing corporate M&A, having overseen Oncor Electric Delivery Company's 2018 majority-stake sale to Sempra Energy and Ultramar Diamond Shamrock's restructuring and other strategic initiatives that supported its merger with Valero Energy, creating one of the largest oil refiners in the country at that time. Professional Highlights: Oncor Electric Delivery Company LLC, a transmission and distribution electric company based in Texas - CEO; Strategic Advisor. Tenet Healthcare Corporation, one of the largest for-profit hospital groups in the U.S. - CFO. Exelon, the largest regulated electric utility in the U.S. - EVP, CFO. Ultramar Diamond Shamrock (acquired by Valero Energy), a North American independent refiner, retailer of refined products and convenience store operator - EVP, CFO. TXU Australia (subsidiary of former TXU Corp.), an electricity and gas distributor - CEO and Managing Director. Current Public Company Boards: NACCO Industries, Inc.

Vice Admiral Norton has significant expertise in cybersecurity and information networks, developed through her leadership positions within the Department of Defense, where she worked with members of the military and civilian staff to secure, operate and defend the Department of Defense Information Network in more than 42 countries. As the commander of JFHQ-DODIN, she was in charge of synchronization of defensive cyberspace activities to ensure unity of command and effort across the Department of Defense. Through her more than 34 years of active-duty service as an officer in the U.S. Navy, Vice Admiral Norton oversaw the development of extensive global telecommunications and cybersecurity programs for naval fleets and information warfare programs, holding command and posts in multiple international locations. She is a recipient of the National Security Agency's Frank B. Rowlett Award for individual achievement in information security. Ms. Norton has extensive human capital management experience through her time overseeing a global network of 8,000 military and civilian personnel at DISA, supporting the President, Secretary of Defense, Joint Chiefs of Staff and other mission partners across combat support operations. Professional Highlights: Defense Information Systems Agency (DISA) and Joint Force Headquarters Department of Defense Information Network (JFHQ-DODIN) - Commander, JFHQ-DoDIN; Director, DISA; Vice Director, DISA. U.S. Navy - Director of Warfare Integration for Information Warfare; U.S. Pacific Command; Communications and Cyber Directorate. Current Public Company Boards: FedEx Corp.

Ms. Geer has over 35 years of experience in healthcare information technologies, having overseen technology operations at one of the largest healthcare providers and healthcare IT services companies in the country, where she was responsible for managing a network of more than 300 healthcare facilities across the United States. Over her tenure, she developed deep expertise in integrating clinical and outpatient strategy with information security into innovative IT applications. She spearheaded multiyear initiatives to build new electronic health record systems, enhance clinical decision support, virtualize data centers and improve core clinical infrastructure to support patient care. She was also responsible for leading the organization's comprehensive data privacy and cybersecurity efforts and programs focused on IT governance, ethics and compliance. Under Ms. Geer's leadership, the IT services group was recognized with over 20 industry awards, solidifying HCA Healthcare's reputation as a premier clinical organization. Additionally, she previously served as Chief Information Officer at a healthcare services company that exclusively partnered with government agencies, gaining deep insights into their operations and priorities. She also contributed to the American Hospital Association Working Group for Health IT Standards. Professional Highlights: HCA Healthcare, Inc., a for-profit healthcare operator - President, HCA Information Technology & Services; SVP, Chief Information Officer; VP, Information Services; Other positions in systems development. America Service Group (merged with Valitas Health Services), a leading provider of healthcare services to government agencies - Chief Information Officer. Owen School of Management, Vanderbilt University, the graduate business school of Vanderbilt - Adjunct Professor.

Mr. Dahlberg's nearly 40-year career encompasses leadership positions with congressional committees, federal agencies and private industry with specialized expertise in military affairs and federal budgeting. Most recently, he led Lockheed Martin's Washington operations, where he drove advocacy, marketing and legislative strategies for the organization's largest programs. He also directed the organization's liaison activities with Congress, the White House, federal agencies, industry associations, state governments and foreign embassies. Previously, Mr. Dahlberg served for over two decades as a senior staff member for the House Appropriations Committee, including seven years as Minority Staff Director of the House Appropriations Defense Subcommittee with jurisdiction over programs of the Department of Defense and intelligence agencies. Mr. Dahlberg also served as the 26th Under Secretary of the Army, the Army's second highest ranking civilian leader, playing a critical role in all matters related to the management and operation of the U.S. Army, including programming and budgeting. He was appointed Acting Secretary of the Army in early 2001. Professional Highlights: Lockheed Martin Corp., a global security, defense and aerospace company - SVP, Strategic Enterprise Initiatives; SVP, Washington Operations. U.S. House of Representatives, Appropriations Committee -Minority Staff Director, Defense Subcommittee; Staff Member, Transportation Appropriations Subcommittee. U.S. Department of Defense - 26th Under Secretary of the Army; Acting Secretary of the Army.

Mr. Fubini served over three decades with management consulting firm McKinsey & Company, where he held various senior leadership roles, including founder and leader of the firm's Global Merger Management Practice. His practice focused on corporate mergers and acquisitions, helping companies develop and execute transformative growth strategies. Throughout his management consulting career, he has led several industry-transforming transactions and integration efforts for IBM, Coca-Cola, DuPont, and Merck, among other large multinational enterprises. Additionally, Mr. Fubini has also led several of McKinsey's largest organizational turnaround engagements, designing and implementing strategies for sustainable shareholder value creation. As the Boston Office Manager, Mr. Fubini re-energized McKinsey's New England operation in the early 90s, leading the firm's successful expansion in the region for over a decade and developing strong experience in attracting and retaining top talent. He also co-chaired and was a member of many of the firm-wide committees responsible for McKinsey's governance structure. As a Senior Lecturer and Henry B. Arthur Fellow at Harvard Business School, Mr. Fubini teaches courses on strategic leadership, organizational behavior and marketing. Professional Highlights: Harvard Business School - Senior Lecturer, Henry B. Arthur Fellow; McKinsey & Company, a multinational strategy and management consulting firm - Director Emeritus; Senior Partner; Other advisory roles. Current Public Company Boards: Bain Capital Specialty Finance, Inc.; Bain Capital Private Credit. Other Notable Board Memberships and Affiliations: J.M. Huber Corporation, Director; DLA Piper, Director, Global Board.

As an accomplished scholar and engineer, Dr. May oversees the most comprehensive campus in the University of California system, serving over 40,000 students. Under his leadership, UC Davis has achieved Top 10 recognition in four national university rankings and the university's research programs have secured over $1 billion annually in sponsored research promoting innovation and enhancing America's economy. Throughout his career, Dr. May advanced inclusion in the STEM fields - science, technology, engineering and math - by creating and growing programs aimed at enhancing career mobility and upskilling to meet market demand for highly skilled professionals in emerging, industry-transforming technologies, including data analytics, cybersecurity, and software development. In 2015, President Barack Obama honored Dr. May with the Presidential Award for Excellence in STEM Mentoring. He also has received the Lifetime Mentor Award from the American Association for the Advancement of Science. Dr. May was a National Science Foundation graduate fellow and an AT&T Bell Laboratories graduate fellow and worked as a member of the technical staff at AT&T Bell Laboratories. He is a former member of the National Advisory Board of the National Society of Black Engineers.Professional Highlights: University of California, Davis, one of the leading public research universities in California - 7th Chancellor. Georgia Institute of Technology, a top public research university in Georgia - Dean of the College of Engineering; Chair of the School of Electrical and Computer Engineering; Executive Assistant to Georgia Tech President G. Wayne Clough.

As former Acting Secretary of Defense and the 33rd Deputy Secretary of Defense, Mr. Shanahan led the development of key government defense policies and strategies, which included the 2018 Department of Defense Strategy and the 2018 Cyber Posture Review. A passionate champion of digital and technological advancement, he drove modernization in cybersecurity, AI and cloud computing across the Department of Defense operations. In 2018, he instituted the Joint Artificial Intelligence Center (JAIC) and oversaw the development of the Department of Defense's AI Strategy. In his role as former CEO of a leading aerostructures manufacturer and having spent over three decades in the aerospace industry, Mr. Shanahan has overseen profit and loss centers for both civil aviation and defense units. He has also acquired manufacturing and supply chain expertise through his responsibilities for manufacturing operations and supplier management functions, including the implementation of advanced manufacturing technologies and global supply chain strategies. Professional Highlights: Spirit AeroSystems, Inc., a leading aerostructure supplier for commercial and defense OEMs - Former President & CEO. U.S. Department of Defense - Acting Secretary of Defense; Deputy Secretary of Defense. Boeing Co., a leading global aerospace company - SVP, Supply Chain & Operations, Executive Council Member, Commercial Airplane Programs; VP and General Manager, 787 Dreamliner, Missile Defense Systems, Rotocraft Systems; Other roles with increasing scope of responsibilities. Public Company Boards (Past Five Years): Spirit AeroSystems Holdings, Inc.; Zanite Acquisitions Corp.

As an executive partner at a leading private equity firm for nearly two decades and a former Chief Financial Officer at a global healthcare company, Mr. Kraemer contributes strong financial acumen and extensive investment experience to the Board. His background in corporate banking further enhances the Board's oversight of financial strategy, reporting, operations and capital allocation strategies. He is also a Certified Public Accountant. His 23-year tenure at Baxter International culminated in serving as Chairman and CEO with oversight responsibility for over 50,000 employees in 103 countries, developing strong experience in driving technological innovation, managing diverse business lines and supporting evolving talent management strategies to ensure the retention of top talent. Previously, he served in a variety of senior leadership roles in both domestic and international operations with oversight responsibilities for business development, global communications and European operations, as well as managing several business lines. Mr. Kraemer is known for building high-performing organizations and has written several bestselling books on values-based leadership. Professional Highlights: Madison Dearborn Partners, LLC, a private equity investment firm - Executive Partner. Kellogg School of Management at Northwestern University - Clinical Professor of Management and Strategy. Baxter International, Inc., a global provider of healthcare products, systems and services - Chairman and CEO; President; SVP, CFO; Other senior roles. Current Public Company Boards: Option Care Health, Inc. Public Company Boards (Past Five Years): Dentsply Sirona, Inc. Other Notable Board Memberships and Affiliations: Performance Health, Chairman; The Conference Board, Trustee.

Ms. Jonas is a recognized expert in military, defense and aerospace issues, with a transformational leadership track record in successful strategic planning, business development, operations, finance and technology deployment at the highest levels of the U.S. government and commercial sectors. Her most recent executive leadership roles included oversight of UnitedHealth Group's divisions that serve federal agencies and focus on enhancing healthcare delivery and patient care, offering valuable expertise related to Leidos' health solutions. Prior to that, she served in senior leadership roles in prominent defense, aerospace and technology companies, overseeing global operations and strategic planning. Prior to her service in the commercial sector, she spent over 20 years in federal government agencies, having held senior strategic and financial leadership roles in the Department of Defense, FBI and the House Appropriations Committee. Ms. Jonas is a recipient of many honors, including the Department of Defense Medal for Distinguished Public Service and the Chairman of the Joint Chiefs of Staff Joint Distinguished Civilian Service Award. Professional Highlights: UnitedHealth Group, Inc., a global health insurance and services company - President and CEO, Military and Veterans; President, Logistics Health; SVP, OptumHealth. PASSUR Aerospace, Inc., a business intelligence company for the aviation industry - EVP, Operations. United Technologies Corp. (merged with Raytheon Company to form Raytheon Technologies), a global leader in aerospace and building systems - Director, Operations Planning & Analysis, Sikorsky Aircraft. U.S. Department of Defense - Under Secretary of Defense, Comptroller and CFO; Deputy Undersecretary of Defense for Financial Management. U.S. Federal Bureau of Investigation - Assistant Director, CFO. U.S. House of Representatives, Appropriations Committee - Staff Member, Defense Subcommittee. U.S. Office of Management and Budget - Senior Budget Analyst, National Security. Current Public Company Boards: Virgin Galactic Holdings, Inc.; Centrus Energy Corp.

On October 1, 2026, the Board of Directors of Leidos Holdings, Inc. elected Jeffery S. McElfresh as a Director of the Company, effective October 1, 2026. Mr. Jeffery S. McElfresh is AT&T's chief operating officer. McElfresh's AT&T (NYSE: T) career spans more than 30 years. Currently he oversees AT&T's $250 billion nationwide advanced connectivity infrastructure transformation, an expertise that aligns well with Leidos' core digital work and expanding energy infrastructure business. Also very relevant to Leidos, in prior roles he oversaw AT&T's cybersecurity, data management, and labs. Before joining AT&T, McElfresh began his career as a defense tech engineer on aerospace and maritime projects.

Mr. Hull has served as the President for the Digital Modernization Sector since January 2024. Previously, he served as Executive Vice President and Operations Manager for Enterprise and Cyber Solutions at Leidos from March 2022 through December 2023, and Chief Information Officer (CIO) at Leidos from August 2016 through March 2022. Prior to joining Leidos, Mr. Hull served as the CIO of the Lockheed Martin Corporation's Information Systems & Global Solutions business area from January 2013 through August 2016, ensuring operations and security of IT systems for over 20,000 employees. Mr. Hull has over 30 years of experience in the IT field.

Mr. Stevens has served as President for the National Security Sector since January 2024. Mr. Stevens has been a Leidos corporate officer since 2018 serving in a variety of executive roles prior to this including Chief Growth Officer and Intelligence Group President. Before joining Leidos, Mr. Stevens served in several senior leadership positions at Lockheed Martin Corporation over 20 years. He currently serves on the Board of Directors for Cornerstones and the Intelligence and National Security Alliance, as well as the Board of Advisors for the Center for a New American Security.

Mr. O'Connor has served as Senior Vice President for our Cyber and Analytics business area since January 2024, and before that, led numerous business areas including National Solutions, Homeland Security, and served as Deputy President for our Advanced Solutions Group. Prior to joining Leidos, Mr. O'Connor served Lockheed Martin Corporation in a variety of executive level positions for over 25 years, including Vice President of National Solutions and Vice President of Engineering & Chief Technology Officer for Intelligence under the Information Systems & Global Solutions business.

Ms. Fautsch has served as Chief Human Resources Officer of Leidos since October 2024. Ms. Fautsch has held several key leadership roles at Leidos, including Senior Vice President for Human Resources Operations and Total Rewards, Vice President of Human Resources Strategic Operations, and Vice President of Human Resources for corporate and enterprise functions. Prior to joining Leidos in 2011, she held senior leadership roles in Human Resources management, employee relations, and ethics at Northrop Grumman.

Mr. Sanglier has served as Senior Vice President and Chief Audit Executive since July 2022. Prior to joining Leidos, Mr. Sanglier served as Senior Director, Internal Audit with Raytheon Technologies from November 2016 to June 2022 and as a Partner with Ernst & Young's Advisory practice serving private and public organizations in the technology, manufacturing and professional services industries during June 2008 to December 2010. He previously served as Chair of the North American Board and a member of the Global Board of the Institute of Internal Auditors (IIA) from April 2022 to March 2023. He has been involved as a volunteer leader with the IIA since becoming a member in 2011. Mr. Sanglier has also served as a member of The IIA's Audit Committee, Guidance Development Committee, North American Publications Advisory Committee and multiple task forces.

Mr. Atkinson has served as the Senior Vice President, Chief Accounting Officer and Corporate Controller since 2024. Previously, he served as the Company's Assistant Corporate Controller since June 2021. Prior to joining Leidos, Mr. Atkinson was Director of Technical Accounting and Revenue Recognition at Booz Allen Hamilton from April 2018 until June 2021. He also held key leadership roles within the controller's organization at CSRA, Inc. from October 2016 to April 2018.

Ms. Gruensfelder has served as the President of the Defense Systems Sector since January 2024. Ms. Gruensfelder has extensive Aerospace and Defense leadership expertise, serving for more than 30 years in a variety of leadership roles at Boeing, and its heritage company, McDonnell Douglas. She served as Vice President and General Manager of the Missile and Weapon Systems (MWS), division of Boeing Defense, Space & Security, from April 2021 to November 2022, and prior to that role, as Vice President of Weapons for the MWS division from October 2018 to April 2021.