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Mr. Nye has served as Chair of the Board of Martin Marietta since 2014, as President since 2006 and as Chief Executive Officer and a Director since 2010. Mr. Nye previously served as Chief Operating Officer from 2006 to 2009. Prior to joining Martin Marietta in 2006, Mr. Nye spent nearly 13 years in a series of increasingly responsible positions with Hanson PLC, an international building materials company. In addition to his educational, professional, executive and related roles, Mr. Nye is a past Chairman of the Board of each of the National Stone, Sand & Gravel Association (NSSGA), the American Road & Transportation Builders Association (ARTBA), and the North Carolina Chamber. Mr. Nye is also a member of the Board of Directors and the Executive Committee of the United States Chamber of Commerce, the world's largest business organization. Since 2018, Mr. Nye has been a member of the Board of Directors of General Dynamics Corporation (NYSE: GD), a global aerospace and defense company. Mr. Nye has been recognized by Forbes magazine as one of America's Most Innovative Leaders; he was previously recognized by both Aggregates Manager and Pit & Quarry magazines, as Aggman of the Year and a Hall of Fame inductee, respectively. Mr. Nye has also served on numerous other state, local and/or philanthropic organizations including the boards of directors of the University of North Carolina Health System and the Research Triangle Foundation, as well as the Board of Governors of the Research Triangle Institute. He also served as Co-Chair of the NC FIRST Commission (evaluating North Carolina's current and future transportation investment needs). Mr. Nye received a Bachelor's degree from Duke University and a Juris Doctor degree from Wake Forest University.

On April 10, 2025, the Company appointed Robert J. Cardin to serve as the Company's Interim Chief Financial Officer, effective as on April 11, 2025. Mr. Cardin will continue to serve as Senior Vice President, Controller and Chief Accounting Officer, a position he has held with the Company since 2019. Mr. Cardin is a Certified Public Accountant and holds a bachelor's degree from the University of Michigan and a Master's of Business Administration degree from Wayne State University. He was Vice President and Corporate Controller (2019); Corporate Controller, Chief Accounting Officer, Schweitzer-Mauduit International (2013-2019). Robert J. Cardin, who has served as the Company's Interim Chief Financial Officer since April 10, 2025. Mr. Cardin will remain with the Company in his role as Senior Vice President, Controller and Chief Accounting Officer.

Donald A. McCunniff is Executive Vice President and Chief Human Resources Officer for Martin Marietta. Mr. McCunniff rejoined the Company in September 2024. He previously served as Martin Marietta's Senior Vice President of Human Resources from August 2011 until 2019. Mr. McCunniff has over 20 years of human resources experience. Before joining Martin Marietta, Mr. McCunniff held various senior-level human resource positions at CenturyLink, Inc., Armstrong World Industries, Inc. and Honeywell International, Inc. He began his career as a United States Army officer where he served in a variety of line and staff positions. Mr. McCunniff is a Six Sigma black belt. He graduated from the University of North Georgia with a degree in Political Science and received a Master of Public Administration degree from the University of San Francisco.

On July 7, 2025, Martin Marietta Materials, Inc appointed Michael J. Petro, to serve as the Company's Senior Vice President and Chief Financial Officer, effective as of July 8, 2025. Mr. Petro, age 41, joined the Company in 2015 and currently serves as its Senior Vice President of Strategy and Development, a role he has held since 2021. Mr. Petro will continue serving in this Strategy and Development capacity following the Effective Date. Prior to this Chief Financial Officer role, Mr. Petro served as Vice President, Strategy and Development since 2018 and served as Director of Strategy and Development from 2015 to 2018. Prior to joining the Company, Mr. Petro worked in investment banking at Wells Fargo Securities and served as a consultant at PwC. Mr. Petro earned an undergraduate degree in accounting from Louisiana State University and a master's of business administration degree from Duke University.

Mr. Jason Paul Flynn, Senior Vice President and Chief Information Officer since 2023. Vice President, Strategic Finance, Procurement and Supply Chain (2021-2023); Director, Business Performance Improvement (2020-2021).

Ms. Perez is an investment consultant with DeRoy & Devereaux, an independent investment adviser, where she has provided client consulting services since 2015. She was previously Owner and Managing Partner of The Medallion Company, LLC, a consulting firm, from 2003 to 2015. Ms. Perez was previously a Director of GenOn Energy, Inc. (NYSE: GEN), one of the largest power producers in the United States, from 2002 to 2012, and served as the Chairman of the Audit Committee of GenOn Energy, Inc. from 2002 to 2007 and a member of its Audit and Risk and Finance Oversight Committees from 2008 to 2012. Previously, she was Vice President of Loomis, Sayles & Company, L.P. and co-founder, President and Chief Executive Officer of Medallion Investment Company, Inc. In addition to civic and charitable organizations, Ms. Perez served as Vice Chairman of the Board of Regents at Baylor University and previously served on the Board of Trustees of New Mexico State University, where she was also Chairman of the Board. Ms. Perez earned a Bachelor's degree from Baylor University in Finance and Economics.

Mr. Wajsgras is Chairman and Chief Executive Officer of Everfox, a leading global cybersecurity company. From April 2022 until July 2025, Mr. Wajsgras served as Chief Executive Officer of Intelsat, operator of the world's first globalized network and leader in integrated satellite communications, leading it through its merger with SES to create a multi-orbit global satellite operator. He previously served from March 2015 to April 2020 as president of the Intelligence, Information and Services (IIS) business of the former Raytheon Company, now part of Raytheon Technologies (RTX). Raytheon is a major U.S. defense contractor and industrial corporation. IIS provides a full range of technical and professional services to intelligence, defense, federal and commercial customers worldwide. The business specializes in global intelligence, surveillance and reconnaissance; navigation; Department of Defense space and weather solutions; cybersecurity; analytics; training; logistics; mission support; engineering; automation and sustainment solutions; and international and domestic Air Traffic Management systems. Prior to this role, he was senior vice president and chief financial officer (CFO) of Raytheon from March 2006 to March 2015. Mr. Wajsgras is also an Independent Director and a member of the Audit Committee and Compensation Committee at Parsons Corporation (NYSE: PSN), a digitally enabled solutions provider focused on the defense, intelligence, and critical infrastructure markets, and an Independent Director at Wesco International, Inc., a leading provider of business-to-business distribution, logistics services, and supply chain solutions. He was named Federal Computer Week's prestigious Industry Eagle Award winner in 2018 for his pivotal role in the U.S. government Information Technology community. In 2012, Mr. Wajsgras was named one of the Wall Street Journal's 25 Best CFOs among the larger companies in the Standard & Poor's 500 Index. Mr. Wajsgras earned his Bachelor's degree in accounting from the University of Maryland. He has a Master's in Business Administration from American University.

Mr. Foxx served from October 2018 to January 2022 as Chief Policy Officer and advisor to the President and Chief Executive Officer of Lyft, Inc. Prior to joining Lyft, he served as the seventeenth United States Secretary of Transportation from 2013 to 2017, where he led an agency with more than 55,000 employees and a $70 billion budget, whose primary goal was to ensure that America maintains the world's safest, most efficient transportation system. Previously, Mr. Foxx served as the Mayor of Charlotte, North Carolina, from 2009 to 2013. Since January 2021, Mr. Foxx also serves as an independent director and member of the Audit Committee and Nominating and Governance Committee of CDW Corporation (NASDAQ: CDW), a leading multi-brand technology solutions provider to business, government, education, and healthcare customers, and since May 2021, Mr. Foxx has served as an independent director for NXP Semiconductors (Nasdaq: NXPI), a world leader in secure connectivity solutions for embedded applications. Mr. Foxx earned his Bachelor's degree at Davidson College and his Juris Doctor degree at New York University Law School.

Ms. Ables joined the Martin Marietta Board in November 2018. Ms. Ables held a number of executive positions with Spectra Energy and predecessor companies, including serving as the Chief Administrative Officer of Spectra Energy Corp. where she was responsible for human resources, information technology, support services, community relations and audit services. Prior to that, she served as Vice President of Audit Services and Chief Ethics and Compliance Officer for Spectra Energy, Vice President and Chief Compliance Officer for Duke Energy Corporation, an American electric power holding company, and Senior Vice President and Chief Financial Officer for Duke Energy Gas Transmission. Spectra Energy was a Fortune 500 Company and one of North America's leading pipeline and midstream companies prior to its acquisition by Enbridge Inc. (NYSE: ENB) in 2017. Ms. Ables started her career in the audit department of Peat, Marwick, Mitchell & Co. Ms. Ables serves on the Board of Directors, and as Chair of the Audit Committee and a member of the Environment, Health & Safety Committee and former member of the Governance and Social Responsibility committee of Coterra Energy (NYSE: CTRA), an independent oil and gas company, which is the result of the merger of Cabot Oil & Gas Corporation (NYSE: COG) and Cimerex Energy Co. in October 2021. Ms. Ables served as an Independent Director of Cabot, an independent oil and gas company, where she was Chair of the Audit Committee from 2019 to 2021 and a member of the Audit and Compensation Committees from 2015 to 2021. She served as a Director of Spectra Energy Partners, an affiliate of Spectra Energy Corp., from 2013 to 2017. Ms. Ables attended the University of Texas at Austin where she earned a Bachelor of Business Administration degree in Accounting.

Mr. Slager was President and Chief Executive Officer of Republic Services, Inc. (Republic) (NYSE: RSG), a service provider in the non-hazardous solid waste industry, holding this position from 2011 through his retirement in 2021. Prior to this, he served as President and Chief Operating Officer of Republic from December 2008 until his promotion to CEO. Prior to that, Mr. Slager served in the same capacity for Allied Waste Industries, Inc. (Allied Waste) from 2005 to 2008, prior to its merger with Republic. Mr. Slager was Executive Vice President and Chief Operating Officer of Allied Waste between 2003 and 2004. Prior to that, Mr. Slager held varying positions of increasing responsibility with Allied Waste. Mr. Slager also served as a Director of Republic from 2010 until 2021. Mr. Slager serves as an Independent Director and as a member of the Audit Committee, Finance Committee and Environmental, Safety & Sustainability Committee at Eastman Chemical Company (NYSE: EMN), a global specialty materials company that produces a broad range of products found in items people use every day. Mr. Slager previously served as an Independent Director of UTi Worldwide Inc. (UTi) from 2009 to January 2016, where he served as Chairman of the Nominating and Corporate Governance Committee and as a member of both the Compensation and Risk Committees. UTi, a former NYSE listed company, was an international, non-asset-based supply chain services and solutions company providing air and ocean freight forwarding and other supply chain management services. Mr. Slager also serves as a director on the Board for the Phoenix Children's Hospital. Donald W. Slager will serve as the Company's lead independent director

Mr. Pike joined the Martin Marietta Board in July 2019. Until his retirement in May 2025, Mr. Pike served as the Chairman and Chief Executive Officer of Fortrea (Nasdaq: FTRE). Mr. Pike joined Fortrea as President and Chief Executive Officer in January 2023 during its spinoff from its parent company Labcorp (NYSE: LH). Mr. Pike has more than 30 years of leadership experience in global services, most notably in the pharmaceutical industry. Previously, Mr. Pike served as Chief Executive Officer and a member of the Board of Directors of Quintiles Transnational Holdings, Inc. (Quintiles) from April 2012 until its merger with IMS Health in December 2016 to create IQVIA (NYSE:IQV). Mr. Pike led Quintiles through a successful public offering and helped it grow into a Fortune 500 company. Prior to Quintiles, Mr. Pike spent 22 years at Accenture (NYSE: ACN), a leading global professional services company, providing a broad range of services and solutions in strategy, consulting, digital, technology and operations, until December 2009. At Accenture, Mr. Pike's roles included serving as Chief Risk Officer and Managing Director of the North America Health and Products business areas. He previously served as the global Chief Operating Officer for Accenture's Resources operating group and had also served as Accenture's Chief Strategy Officer. After leaving Accenture in 2009 and until joining Quintiles in 2012, Mr. Pike was involved with a number of start-ups in the technology and healthcare sectors. Early in his career Mr. Pike was a consultant with McKinsey & Company. Mr. Pike earned his Bachelor's degree in accounting from the University of Delaware.

Ms. Mack is the retired Chief Executive Officer of Consumer and Small Business Banking (CSBB) for Wells Fargo & Company, a leading financial services company (NYSE: WFC). In her role leading CSBB, Ms. Mack oversaw Branch Banking, Small Business Banking, Chief Administrative Office, CSBB Marketing, Consumer Data and Engagement Platforms, Strategy and Innovation, Deposit Products, Diverse Customer Segments, Physical Distribution Strategies, and the Affluent Customer Segment. She also had accountability for CSBB Operations and CSBB Control Management functions. Ms. Mack began her banking career with First Union, a predecessor of Wells Fargo, in 1984 and during her time with Wells Fargo held numerous leadership positions, including CEO and president of Wells Fargo Advisors, LLC, one of the nation's largest full-service retail brokerage organizations. Ms. Mack is an Independent Director of Barclays PLC, a diversified bank with comprehensive UK consumer, corporate and wealth and private banking franchises, a leading investment bank and a strong, specialist US consumer bank. Ms. Mack is a graduate of Davidson College with a Bachelor's degree in International Political Economy and serves on the college's board of trustees. She is a board member of Habitat for Humanity International.

Ms. Delly is the former Chief Executive Officer of Benchmark Electronics, Inc., a solutions provider for high-technology OEM customers (NYSE: BHE), from 2012 until her retirement in 2016. She previously held several senior leadership roles at Benchmark, including President from 2006 to 2011, Executive Vice President and Chief Financial Officer from 2001 to 2006, and Corporate Controller and Treasurer from 1995 to 2001. Prior to joining Benchmark, Ms. Delly was a senior Audit Manager at KPMG. She is a certified public accountant and holds a bachelor's degree in accounting from Samford University. Ms. Delly currently serves on the board of directors of Broadcom Inc. (NASDAQ: AVGO) and Flowserve Corporation (NYSE: FLS) and previously served on the board of directors of National Instruments Corporation, until its acquisition in 2023.

Mr. Lyons has served as President and Chief Executive Officer of Ameren Corporation (NYSE: AEE) since January 2022 and was elected Chairman, President and Chief Executive Officer in November 2023. He joined Ameren in 2001 as Controller of Ameren and certain of its subsidiaries and was elected Vice President of the Company and certain of its subsidiaries in 2003. In 2007, Mr. Lyons was elected Vice President and Principal Accounting Officer, and in 2008, he was elected Senior Vice President and Principal Accounting Officer of Ameren and its subsidiaries. In 2009, he was elected Senior Vice President and Chief Financial Officer, while remaining Principal Accounting Officer of the Company and its subsidiaries. In 2013, Mr. Lyons was elected Executive Vice President and Chief Financial Officer of the Company and its subsidiaries and relinquished his duties as Principal Accounting Officer. In 2016, he was also elected Chairman and President of Ameren Services, In December 2019, Mr. Lyons was elected Chairman and President of Ameren Missouri. Mr. Lyons earned his Bachelor's degree in Business Administration from St. Louis University and his Master's degree in Business Administration from Washington University.

Kirk Light joined Martin Marietta in May 2019, initially serving as the President of Cement and Southwest Ready Mix. Over his tenure, he has steadily climbed the executive ranks, being named President of the Southwest Division in June 2020 before his recent promotion in May 2026 to President of the West, Southwest, and Specialties Divisions. In this expanded capacity, he oversees a massive operational footprint and is a key driver of the company's strategic growth and vertical integration efforts.Before his time at Martin Marietta, Light spent 15 years at CEMEX, where he held high-level positions such as President of the Florida Region and Executive Vice President of Logistics. His technical and business background is rooted in a B.S. in Chemical Engineering from the Colorado School of Mines and an MBA from the University of Michigan. Today, he is considered a pivotal leader in managing the company's aggregates and specialty products across the western United States.

On April 27, 2026, Martin Marietta Materials, Inc. announced that the Company has appointed Christopher W. Samborski, to serve as the Company's Executive Vice President and Chief Operating Officer, effective as of May 1, 2026. Mr. Samborski, age 45, joined the Company in August 2018 and currently serves as President of the West and Specialties Divisions. In January 2025, he assumed the leadership of the West Division and retained his responsibilities as President of Specialties which he has led since January 2022. Mr. Samborski served as Vice President of Strategic Finance, Procurement and Supply Chain beginning in January 2020 prior to his current roles and served as Vice President of Strategic Finance from 2018 to 2020. Prior to joining the Company, Mr. Samborski spent close to ten years in leadership roles at Caterpillar Inc. and Johnson & Johnson. Mr. Samborski began his career with General Electric Company and was selected for and completed GE's elite Operations Management Leadership Program. Mr. Samborski holds a Bachelor of Science degree in industrial engineering from the University of Wisconsin-Madison and an MBA in strategy and general management from the University of Michigan's Ross School of Business, where he received the Ross Distinguished Scholar Award and graduated with high distinction.

Ms. Sara W. Brown, Deputy General Counsel and Assistant Corporate Secretary.