Page 16 - Martin Marietta - 2023 Proxy Statement

PROXY /

Practices Contributing to Board Effectiveness
• Identification of diverse Board candidates

• Meaningful refreshment
• Rotation of Board committee assignments based on experience and expertise
• Robust onboarding
• Tenure and overboarding guidelines
• Our Board refreshment has resulted in a decrease of the Board’s average tenure, with a greater mix of Directors with
long-term knowledge of the Company, its strategy, opportunities and challenges, and those with new perspectives

Director Nominees

INDEPENDENCE GENDER CEO EXPERIENCE DIVERSITY

90% 3 50% 40%
PROXY HIGHLIGHTS BOARD NOMINEES ARE BOARD NOMINEES PUBLIC COMPANY CEO WOMEN OR MINORITIES

CURRENT OR FORMER
BOARD NOMINEES ARE
ARE WOMEN
INDEPENDENT
9 65
TENURE AGE

6 YEARS AVERAGE
AVERAGE YEARS OF
AGE
4
3 3

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

Board Attendance

In 2022, during their terms of service, all directors attended 100% of the Board meetings and all directors attended at
least 75% of the committee meetings to which they were assigned. All directors then in office attended the May 2022
Annual Meeting.

10 2023 PROXY STATEMENT