Page 16 - Martin Marietta - 2025 Proxy Statement

PROXY /

Practices Contributing to Board Effectiveness

• Identification of Board candidates with diverse skills, experiences and perspectives
• Meaningful refreshment

• Rotation of Board committee assignments based on experience and expertise
• Robust onboarding
• Tenure and overboarding guidelines
• Our Board refreshment has been robust, with eight new directors in ten years, providing the Board a greater mix of
Directors with long-term knowledge of the Company, its strategy, opportunities and challenges, and those with new
perspectives

Board Composition

INDEPENDENCE GENDER CEO EXPERIENCE DIVERSITY

PROXY HIGHLIGHTS 90% 4 40% 50%

DIRECTORS ARE
CURRENT OR FORMER
DIRECTORS ARE
INDEPENDENT DIRECTORS ARE PUBLIC COMPANY CEO WOMEN OR MINORITIES
WOMEN
9.3 65.5
TENURE AGE

YEARS AVERAGE
AVERAGE YEARS OF
1 AGE
4 4
3 3
2

1 0 1 1
INDEPENDENT
1 2 - 6 7 - 10 11 - 14 15 50 - 60 61 - 65 66 - 70 >70

Board Attendance

In 2024, during their terms of service, all directors attended 100% of the Board and the committee meetings to which
they were assigned. All directors then in office attended the May 2024 Annual Meeting.

10 2025 PROXY STATEMENT